[go: up one dir, main page]

CN118246637B - Robust planning method for AC/DC hybrid distribution network under multi-layer consumption mode - Google Patents

Robust planning method for AC/DC hybrid distribution network under multi-layer consumption mode Download PDF

Info

Publication number
CN118246637B
CN118246637B CN202410659256.7A CN202410659256A CN118246637B CN 118246637 B CN118246637 B CN 118246637B CN 202410659256 A CN202410659256 A CN 202410659256A CN 118246637 B CN118246637 B CN 118246637B
Authority
CN
China
Prior art keywords
distribution network
planning
distributed power
operator
hybrid distribution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202410659256.7A
Other languages
Chinese (zh)
Other versions
CN118246637A (en
Inventor
潘东
葛成
宋文丽
桂立振
胡斌
杨靓
张霰
方毛林
王政
钱龙
吕严兵
任柳妹
陆晓梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Economic and Technological Research Institute of State Grid Anhui Electric Power Co Ltd
Original Assignee
Economic and Technological Research Institute of State Grid Anhui Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Economic and Technological Research Institute of State Grid Anhui Electric Power Co Ltd filed Critical Economic and Technological Research Institute of State Grid Anhui Electric Power Co Ltd
Priority to CN202410659256.7A priority Critical patent/CN118246637B/en
Publication of CN118246637A publication Critical patent/CN118246637A/en
Application granted granted Critical
Publication of CN118246637B publication Critical patent/CN118246637B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition
    • G06F18/20—Analysing
    • G06F18/22—Matching criteria, e.g. proximity measures
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/02—Marketing; Price estimation or determination; Fundraising
    • G06Q30/0201—Market modelling; Market analysis; Collecting market data
    • G06Q30/0206—Price or cost determination based on market factors
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Energy or water supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2103/00—Details of circuit arrangements for mains or AC distribution networks
    • H02J2103/30—Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2103/00—Details of circuit arrangements for mains or AC distribution networks
    • H02J2103/30—Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks
    • H02J2103/35—Grid-level management of power transmission or distribution systems, e.g. load flow analysis or active network management

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Strategic Management (AREA)
  • Economics (AREA)
  • Theoretical Computer Science (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Development Economics (AREA)
  • Human Resources & Organizations (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Accounting & Taxation (AREA)
  • General Business, Economics & Management (AREA)
  • Marketing (AREA)
  • Finance (AREA)
  • Game Theory and Decision Science (AREA)
  • Health & Medical Sciences (AREA)
  • Tourism & Hospitality (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Bioinformatics & Computational Biology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Evolutionary Biology (AREA)
  • Evolutionary Computation (AREA)
  • General Engineering & Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Public Health (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Primary Health Care (AREA)
  • Educational Administration (AREA)
  • Operations Research (AREA)
  • Quality & Reliability (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention relates to the technical field of power distribution network planning, and particularly discloses a robust planning method of an alternating current-direct current hybrid power distribution network in a multilayer digestion mode, which comprises the following steps: the method comprises the steps of evaluating running of a distributed power supply, judging the intervention effect of renewable energy sources and planning and matching an AC/DC hybrid power distribution network, firstly, evaluating the stable running evaluation degree of the distributed power supply in the AC/DC hybrid power distribution network and the access effect evaluation index of renewable energy sources in the AC/DC hybrid power distribution network respectively, obtaining the planning executable degree of the AC/DC hybrid power distribution network, comparing the planning executable degree with a set planning executable threshold value, finally matching to obtain a planning preset plan of the AC/DC hybrid power distribution network, combining various absorption modes with a robust planning technology, optimizing power distribution network resources, improving the anti-interference capability and adaptability of the power distribution network, furthest utilizing the renewable energy sources, and reducing the running management cost of the planning of the AC/DC hybrid power distribution network.

Description

Robust planning method for AC/DC hybrid power distribution network in multilayer absorption mode
Technical Field
The invention relates to the technical field of power distribution network planning, in particular to a robust planning method of an alternating current-direct current hybrid power distribution network in a multilayer absorption mode.
Background
The current AC/DC hybrid power distribution network planning technology relates to various voltage levels, various power supply types and complex control strategies, the planning and management difficulty is high, and a great amount of funds are required to be invested in the construction and transformation of the AC/DC hybrid power distribution network, so that a new method is required to be introduced to solve the problems of high complexity, high investment cost and the like of the AC/DC hybrid power distribution network planning technology.
For example, the invention patent with the publication number of CN109598377B discloses a fault constraint-based robust planning method for an AC/DC hybrid power distribution network, which comprises the following steps: clustering the load of a planning area and the output of renewable energy sources based on a local density mean value clustering algorithm to generate a plurality of typical operation scenes; constructing a planning sub-model, a fault sub-model and a running sub-model; constructing a double-layer robust planning model of the AC/DC power distribution network based on the sub-model established in the step; the double-layer robust planning model of the AC/DC power distribution network is solved based on a C & CG algorithm, and the application ensures that under any N-1 fault condition, the load shedding phenomenon, the wind discarding, the light discarding and the water discarding phenomena are avoided, and the economy is fully optimized on the basis of ensuring the safety of the system.
However, in the process of implementing the embodiment of the application, the present application finds that the above technology has at least the following technical problems: when the application applies the local density mean clustering algorithm, the analysis of the renewable energy output is not comprehensive enough to support the clustering algorithm, and the analysis and calculation of the distributed energy are not considered when the double-layer robust planning model of the power distribution network is used, so that the solving result is inaccurate, errors exist in the reached conclusion, and the maximum economy of the power distribution network planning cannot be achieved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a robust planning method of an alternating current-direct current hybrid power distribution network in a multilayer digestion mode, which can effectively solve the problems related to the background art.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the invention provides a robust planning method of an alternating current-direct current hybrid power distribution network in a multilayer digestion mode, which comprises the following steps: acquiring an operation index set of each distributed power supply in the AC/DC hybrid power distribution network, and evaluating the stable operation evaluation degree of the distributed power supplies in the AC/DC hybrid power distribution network; collecting and processing the relevant data of the access effect of the renewable energy sources in the AC/DC hybrid power distribution network, and evaluating the access effect evaluation index of the renewable energy sources in the AC/DC hybrid power distribution network; and comprehensively analyzing and processing the stable operation evaluation degree of the distributed power supply in the AC/DC hybrid power distribution network and the access effect evaluation index of the renewable energy source in the AC/DC hybrid power distribution network to obtain the planning executable degree of the AC/DC hybrid power distribution network, comparing the planning executable degree with a set planning executable threshold value, and finally matching to obtain a planning preset plan of the AC/DC hybrid power distribution network.
As a further method, the matching is performed to obtain a planning preset plan of the ac/dc hybrid power distribution network, and the specific analysis process is as follows: and comparing the planning executable degree of the AC-DC hybrid power distribution network with a set planning executable threshold, if the planning executable degree of the AC-DC hybrid power distribution network is lower than the planning executable threshold, performing difference processing on the planning executable degree of the AC-DC hybrid power distribution network and the planning executable threshold to obtain a planning executable deviation value of the AC-DC hybrid power distribution network, and matching the planning executable deviation value of the AC-DC hybrid power distribution network with a planning preset plan corresponding to each planning executable deviation value interval defined in an AC-DC power distribution network information base, thereby obtaining the planning preset plan of the AC-DC hybrid power distribution network.
As a further method, the planning executable degree of the ac/dc hybrid power distribution network is as follows:
Wherein the method comprises the steps of Expressed as the degree of planning executable of the ac-dc hybrid distribution network,The evaluation degree of stable operation of the distributed power supply in the AC/DC hybrid power distribution network is expressed,Expressed as an access effect evaluation index of renewable energy sources in an alternating current-direct current hybrid power distribution network,Represented as a weight factor corresponding to a predefined steady operation rating of the distributed power supply,And e is a natural constant, and represents a weight factor corresponding to an access effect evaluation index of the predefined renewable energy source.
As a further method, the stable operation evaluation degree of the distributed power supply in the AC/DC hybrid power distribution network is specifically analyzed as follows: and according to the operation index set of each distributed power supply in the AC/DC hybrid power distribution network, wherein the operation index set comprises power generation technology related information and storage technology related information, the power generation technology influence degree coefficient of each distributed power supply and the storage technology influence degree coefficient of each distributed power supply are respectively evaluated and comprehensively analyzed to obtain the stable operation evaluation degree of the distributed power supply in the AC/DC hybrid power distribution network.
As a further method, the power generation technology influence degree coefficient of each distributed power supply comprises the following specific analysis processes: according to the power generation technology related information of each distributed power supply, extracting and obtaining the accumulated power generation amount, the power generation efficiency, the fault occurrence times and the duration of each fault of each distributed power supply in a set planning period; analyzing and processing the fault occurrence times and the fault duration time of each distributed power supply in a set planning period through a state enumeration method to finally obtain the power generation reliability of each distributed power supply in the set planning period; and extracting a reference quantity and a defined efficiency of power generation from an AC/DC power distribution network information base, and comprehensively analyzing the influence degree coefficient of the power generation technology of each distributed power supply.
As a further method, the storage technology influence degree coefficient of each distributed power supply comprises the following specific analysis processes: extracting and obtaining accumulated storage capacity and storage efficiency of each distributed power supply in a set planning period according to storage technology related information of each distributed power supply; and extracting storage reference quantity and storage definition efficiency from an AC/DC power distribution network information base, and comprehensively analyzing the storage technology influence degree coefficient of each distributed power supply.
As a further method, the access effect evaluation index of the renewable energy sources in the ac/dc hybrid power distribution network comprises the following specific analysis processes: and extracting and obtaining the related information of the supporting index of the operator, the related information of the economic index of the operator and the related information of the power quality evaluation index of the power grid side according to the related data of the access effect of the renewable energy source in the AC/DC hybrid power distribution network, and respectively evaluating the influence degree coefficient of the supporting index of the operator, the influence degree coefficient of the economic index of the operator and the influence degree coefficient of the power quality evaluation index of the power grid side for comprehensive analysis to obtain the access effect evaluation index of the renewable energy source in the AC/DC hybrid power distribution network.
As a further method, the operator support index influence degree coefficient comprises the following specific analysis processes: according to the related information of the supporting index of the operator, the online electricity selling income amount, the power failure loss cost and the renewable energy source operation maintenance cost of the operator in a set planning period are extracted; and extracting and obtaining the online electricity selling definition income amount, the outage loss permission cost and the renewable energy source operation definition maintenance cost from the AC/DC power distribution network information base, and comprehensively analyzing the influence degree coefficient of the support index of the operator.
As a further method, the operator economic index influence degree coefficient comprises the following specific analysis processes: extracting and obtaining the dynamic investment recovery period of the operators according to the related information of the economic indexes of the operators; calculating based on basic formulas of cash inflow and outflow to obtain net cash flow of an operator at each planning time point, thereby constructing net cash flow change fold lines of the operator, and extracting profit angle values corresponding to each profit of the operator from the net cash flow change fold lines; and extracting and obtaining a profit angle limiting value from the AC/DC power distribution network information base, and comprehensively analyzing the influence degree coefficient of the economic index of the operator.
As a further method, the power quality evaluation index on the power grid side affects the degree coefficient, and the specific analysis process is as follows: according to the information related to the power quality evaluation index of the power grid side, the load point voltage qualification rate and the load point voltage deviation rate of the power grid side in a set planning period are extracted; and extracting and obtaining the load point voltage definition qualification rate and the load point voltage definition deviation rate from an AC/DC power distribution network information base, and comprehensively analyzing the influence degree coefficient of the electric energy quality evaluation index on the power grid side.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
(1) According to the method, the stable operation evaluation degree of the distributed power supply in the AC/DC hybrid power distribution network and the access effect evaluation index of the renewable energy source in the AC/DC hybrid power distribution network are firstly evaluated respectively, so that the planning executable degree of the AC/DC hybrid power distribution network is obtained, the planning executable degree is compared with the set planning executable threshold value, the planning preset plan of the AC/DC hybrid power distribution network is finally obtained through matching, the power distribution network resource can be optimized through combining various absorption modes with the robust planning technology, the anti-interference capability and the adaptability of the power distribution network are improved, the renewable energy source is utilized to the greatest extent, and the operation management cost of the AC/DC hybrid power distribution network planning is reduced.
(2) According to the invention, the operation index set of each distributed power supply in the AC/DC hybrid power distribution network is obtained, the steady operation evaluation degree of the distributed power supply in the AC/DC hybrid power distribution network is evaluated, the power supply reliability of the distributed power supply is improved, and the resource allocation is optimized, so that the resource waste in the AC/DC hybrid power distribution network is reduced, the utilization efficiency of renewable energy sources is improved, and the normal electricity utilization of key facilities and residents in the AC/DC hybrid power distribution network area is ensured.
(3) According to the invention, the access effect evaluation index of the renewable energy sources in the AC/DC hybrid power distribution network is evaluated by collecting and processing the access effect related data of the renewable energy sources in the AC/DC hybrid power distribution network, so that the renewable energy source structure can be optimized, the utilization rate of the renewable energy sources is improved, the dependence on the traditional energy sources is reduced, the carbon emission in the area of the AC/DC hybrid power distribution network is reduced, the power generation efficiency of the renewable energy sources is improved, and the power generation cost of the renewable energy sources is reduced.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
FIG. 1 is a flow chart of the method steps of the present invention.
Figure 2 is a schematic diagram of a net cash flow change polyline in accordance with the present invention.
Reference numerals: 1. and a profit angle value, 2, a first horizontal straight line.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 1, the invention provides a robust planning method for an ac/dc hybrid power distribution network in a multilayer digestion mode, comprising: and acquiring an operation index set of each distributed power supply in the AC/DC hybrid power distribution network, and evaluating the stable operation evaluation degree of the distributed power supplies in the AC/DC hybrid power distribution network.
It should be noted that, in a multi-layer digestion mode, power generated by distributed energy or renewable energy is digested and utilized through various levels and paths in an electric power system, and the mode aims at improving the utilization rate of the energy, reducing the energy waste, balancing the supply and demand relationship of a power grid and ensuring the stable operation of the electric power system; specifically, the multi-layer consumption mode may include several aspects: in-situ digestion, regional grid digestion, energy storage system digestion, cross-season or cross-time digestion, and demand side management.
Specifically, the influence degree coefficient of the power generation technology of each distributed power supply is specifically analyzed by the following steps:
and according to the operation index sets of the distributed power supplies in the alternating current-direct current hybrid power distribution network, wherein the operation index sets comprise power generation technology related information and storage technology related information.
According to the power generation technology related information of each distributed power supply, extracting and obtaining the accumulated power generation amount, the power generation efficiency, the fault occurrence times and the duration time of each fault of each distributed power supply in a set planning period, wherein the accumulated power generation amount of each distributed power supply in the planning period can be recorded and accumulated in real time from the starting time point to the ending time point of the planning period by installing an intelligent ammeter at the output port of the distributed power supply; the power generation efficiency of each distributed power supply in the planning period can be obtained by carrying out ratio processing on the accumulated power generation amount and the planning time point; the occurrence times and the duration time of each fault can be directly extracted from the log records of each distributed power system.
And analyzing and processing the fault occurrence times and the fault duration time of each distributed power supply in the set planning period through a state enumeration method to finally obtain the power generation reliability of each distributed power supply in the set planning period, wherein the state enumeration method is to analyze data of each fault through enumerating the fault occurrence times and the fault duration time one by one, and obtain the power generation reliability after processing and integration.
And extracting a reference amount of power generation and power generation definition efficiency from the AC/DC power distribution network information base.
In a specific embodiment, information on performance characteristics, operation efficiency, reliability, maintenance cost and the like of different distributed power supply power generation technologies can be known through a case study method, and the influence of the different distributed power supply power generation technologies on the overall performance of a distributed power supply system is analyzed by comparing the advantages and disadvantages of the different power generation technologies.
In this embodiment, the coefficient of the degree of influence of the power generation technology of each distributed power source is obtained by comprehensively analyzing the accumulated power generation amount, the power generation efficiency and the power generation reliability of each distributed power source in a set planning period, so as to determine the numerical value of the degree of influence of the power generation technology of each distributed power source, and in this embodiment, a more accurate calculation method is adopted to obtain the coefficient of influence of the power generation technology of each distributed power source, and the specific expression is as follows:
Wherein the method comprises the steps of In this embodiment, too high accumulated power generation amount indicates that the distributed power supply is in long-time and high-load operation, so that abrasion of the distributed power supply is accelerated, and maintenance cost of the distributed power supply and frequency of replacing the power supply may be increased; the low accumulated generated energy can cause poor economic benefit of the distributed power supply, and the cost of the distributed power supply cannot be effectively reduced and the income of the distributed power supply can be improved; the excessively low power generation efficiency means more energy loss in the energy conversion process, which not only wastes a great deal of electric energy resources, but also increases the cost of power generation of the distributed power supply; at low reliability of power generation, the power generation technology of the distributed power source may not be able to stably provide the required power under the prescribed conditions and time, which may cause instability of power supply, thereby affecting normal operation of users or systems relying on the power sources; in summary, the integrated power generation amount, the power generation efficiency and the power generation reliability are important to the power generation technology influence degree coefficient of the distributed power supply, so that these parameters are fully considered when calculating the coefficient, and the negative influence caused by these parameters is reduced.
I is the number of each distributed power supply,M is the number of distributed power supplies.
The accumulated power generation amount of the ith distributed power supply in the set planning period is indicated as the total power generated by the distributed power supply in the planning period, and the excessive or the excessive low of the accumulated power generation amount can negatively influence the power generation technology of the distributed power supply.
The reference amount of power generation is a standard amount of power defined by the amount of power generation.
The power generation efficiency of the ith distributed power supply in a set planning period is represented as the conversion efficiency of each type of energy source in the process of converting electric energy into other forms of energy sources by the distributed power supply.
The term "power generation defining efficiency" refers to the minimum value allowed by the power generation efficiency.
The power generation reliability of the ith distributed power supply in a set planning period is indicated to be the power generation reliability of the ith distributed power supply in the planning period, and the power generation reliability is high, which means that the failure rate of the ith distributed power supply is low, and the power can be continuously and stably supplied.
Expressed as a correction factor corresponding to a predefined accumulated power generation amount,Indicated as a correction factor corresponding to a predefined power generation efficiency,And e is a natural constant, and is expressed as an influence factor corresponding to a predefined unit value of the power generation reliability.
Further, the storage technology influence degree coefficient of each distributed power supply comprises the following specific analysis processes:
And extracting and obtaining the accumulated storage capacity and the storage efficiency of each distributed power supply in a set planning period according to the storage technology related information of each distributed power supply, wherein the accumulated storage capacity and the storage efficiency of each distributed power supply in the set planning period can be directly extracted and obtained from a log file of the distributed power supply storage device.
And extracting storage reference quantity and storage definition efficiency from the AC/DC power distribution network information base.
In a specific embodiment, a mathematical model of the distributed power supply storage system can be established through a computer simulation software by a simulation method, and the operation process of the system is simulated by setting key indexes such as charge and discharge efficiency, energy density, cycle life and the like under different conditions, so that the storage technology influence degree coefficient of each distributed power supply can be obtained.
In this embodiment, the storage technology influence degree coefficient of each distributed power supply is obtained by comprehensively analyzing the accumulated storage amount and the storage efficiency of each distributed power supply in a set planning period, so as to determine the value of the storage technology influence degree of each distributed power supply, and in this embodiment, a more accurate calculation method is adopted to obtain the value, wherein the specific expression is as follows:
Wherein In this embodiment, when the accumulated storage amount is too small, the distributed power supply may not provide enough power support during a peak period or a sudden demand, resulting in interruption or instability of power supply, and meaning that the redundant electric energy generated by the distributed power supply cannot be effectively stored, thereby resulting in energy waste; the utilization rate of the distributed power supply is not high due to the excessive storage capacity, so that the cost burden is increased; excessive storage means that more power supply equipment needs to be maintained and managed, which can lead to an increase in initial investment costs; too little storage efficiency means that there is more energy loss in the charge and discharge process, which reduces the overall energy utilization efficiency of the system, and too little storage efficiency may cause an increase in the running cost of the distributed power supply, including the cost of capacity, maintenance, replacement of power supply equipment, and the like; in summary, the storage amount and the storage efficiency of the integrated storage are too small and too large, which negatively affects the influence degree coefficient of the storage technology of the distributed power supply, so these factors need to be comprehensively considered when designing and selecting the storage technology of the distributed power supply to ensure stable, efficient and economical operation of the distributed power supply.
I is the number of each distributed power supply,M is the number of distributed power supplies.
The accumulated storage amount of the ith distributed power supply in the set planning period is indicated as the total electric quantity which can be stored by the distributed power supply system in the planning period, and is generally closely related to factors such as the type of the power supply, the storage capacity, the charging efficiency, the length of the planning period and the like.
Denoted as storage reference refers to a standard value of storage.
The storage efficiency of the ith distributed power supply in a set planning period is indicated as the efficiency of storage equipment in the distributed power supply system for storing and releasing electric energy, and the storage efficiency is influenced by various factors including physical characteristics, chemical properties, working states, environmental conditions and the like of the distributed power supply system.
The term "storage definition efficiency" refers to a minimum value defined by storage efficiency.
Indicated as a correction factor corresponding to a predefined accumulated storage,E is a natural constant, expressed as a correction factor corresponding to a predefined storage efficiency.
Specifically, in a specific embodiment, operation data of the distributed power supply, including key parameters such as voltage, current, power factor, temperature, and the like, can be collected through a real-time monitoring system, and statistics and analysis are performed on the collected data, so that the stable operation evaluation of the distributed power supply in the ac/dc hybrid power distribution network is obtained.
In this embodiment, the evaluation degree of stable operation of the distributed power sources in the ac/dc hybrid power distribution network is obtained by comprehensively analyzing the power generation technology influence degree coefficient of each distributed power source and the storage technology influence degree coefficient of each distributed power source, so as to determine the numerical value of the evaluation of stable operation of the distributed power sources in the ac/dc hybrid power distribution network, and in this embodiment, a more accurate calculation method is adopted to obtain the numerical value, and a specific analysis formula is as follows:
Wherein the method comprises the steps of The evaluation degree of stable operation of the distributed power sources in the ac/dc hybrid power distribution network is represented, in this embodiment, when the influence degree coefficient of the power generation technology is too large, it means that fluctuation or variation of the power generation technology has a significant influence on the stable operation of the distributed power sources, which may cause unstable power source output and increase the risk of breakdown of the distributed power sources; an excessively high power generation technology impact degree coefficient may require more frequent power equipment maintenance, a more complex distributed power control system, and higher power conversion efficiency, thereby increasing the running cost of the distributed power supply; when the influence degree coefficient of the storage technology is too large, the performance fluctuation of the energy storage equipment can have a significant influence on the stable operation of the distributed power supply, which can lead to the reduction of energy storage efficiency and the increase of energy waste; when the influence degree coefficient of the storage technology is too high, the response speed of the energy storage equipment may be slow, so that the response time of the distributed power supply system is prolonged, and the real-time regulation capability of the distributed power supply is reduced; in summary, the excessive power generation technology influence degree coefficient and the storage technology influence degree coefficient can reduce the stable operation evaluation degree of the distributed power supply in the ac/dc hybrid power distribution network and increase the operation risk of the distributed power supply, so that in the design and operation process of the distributed power supply, these factors need to be fully considered, and these negative effects are reduced by optimizing technology, improving the performance of power supply equipment, strengthening the management of the distributed power supply system and other modes, so as to ensure the stable operation of the distributed power supply.
The power generation technology influence degree coefficient expressed as the ith distributed power supply represents a numerical value of the power generation technology influence degree of each distributed power supply obtained through comprehensive analysis of the accumulated power generation amount, the power generation efficiency and the power generation reliability of each distributed power supply in a set planning period.
I is the number of each distributed power supply,M is the number of distributed power supplies.
The storage technology influence degree coefficient is expressed as an ith distributed power supply, and the storage technology influence degree coefficient of each distributed power supply is obtained by comprehensively analyzing the accumulated storage quantity and the storage efficiency of each distributed power supply in a set planning period.
Represented as a weight factor corresponding to a predefined power generation technology influence degree coefficient,Represented as a weight factor corresponding to a predefined storage technology influence degree coefficient.
And acquiring and processing the data related to the access effect of the renewable energy sources in the AC/DC hybrid power distribution network, and judging the access effect evaluation index of the renewable energy sources in the AC/DC hybrid power distribution network.
Specifically, the operator support index influence degree coefficient comprises the following specific analysis processes:
and extracting and obtaining the related information of the supporting index of the operator, the related information of the economic index of the operator and the related information of the power quality evaluation index of the power grid side according to the related data of the access effect of the renewable energy sources in the AC/DC hybrid power distribution network.
And extracting and obtaining the online electricity selling income amount, the outage loss cost and the renewable energy source operation maintenance cost of the operator in a set planning period according to the related information of the supporting index of the operator, wherein the online electricity selling income amount, the outage loss cost and the renewable energy source operation maintenance cost of the operator in the set planning period can be directly obtained in a project income report of the operator.
And extracting and obtaining the online electricity selling definition income amount, the outage loss permission cost and the renewable energy source operation definition maintenance cost from the AC/DC power distribution network information base.
The operator support index influence degree coefficient is comprehensively analyzed, and in a specific embodiment, the operator support index may be defined by establishing a mathematical evaluation model, which may include network quality, customer service satisfaction, system failure rate, order processing efficiency, and the like, and the established model is verified by using the data, so as to obtain the operator support index influence degree coefficient.
The above-mentioned operator supports the index influence degree coefficient, in this embodiment, is obtained through comprehensive analysis of online electricity selling income amount, outage loss cost and renewable energy operation maintenance cost of the operator in the planning period set, so as to judge the value of the operator supports the index influence degree, in this embodiment, adopt more accurate calculation method to obtain, the concrete expression is:
Wherein the method comprises the steps of Expressed as a factor of the extent of influence of the operator support index, in this embodiment, too little profit means that the economic benefit of the operator is poor, and it may be difficult to support continuous operation and development; too little online electricity sales revenue may result in lower return on investment than expected, affecting operator decisions and future investment plans; frequent power failure can seriously affect the electricity utilization experience of users, and the satisfaction degree of the users is reduced; the outage loss cost comprises compensation, repair, emergency response and other costs caused by outage, and the additional costs can increase the operation cost of operators and reduce the overall profitability; the operation and maintenance of renewable energy devices generally require higher costs, which, if excessive, would impose a heavy financial burden on the operators, affecting their continuous operation and expansion capacity; excessive operation and maintenance costs may limit operators' enthusiasm to popularize renewable energy sources; in summary, the problems of too small online electricity sales income, too large outage loss cost, too large renewable energy operation maintenance cost and the like will have negative effects on the influence degree coefficient of the support index of the operator, and in order to reduce these negative effects, the operator needs to actively seek effective measures for reducing the cost, improving the income and guaranteeing the service reliability so as to optimize the operation and business development thereof.
Expressed as the amount of revenue an operator receives to sell on the internet during a set planning period, which refers to the total amount of revenue the operator receives by selling power to the grid or other customers during the planning period, which is typically calculated based on both sales and electricity prices.
The definition of the profit amount for the online electricity selling refers to the minimum profit amount allowed by the online electricity selling.
In a specific embodiment, the online electricity selling profit is set to be influenced by electricity selling price and region, the online electricity selling profit will be different, for example, the basic electricity selling price of the combined fertilizer is 0.56 yuan per degree, if 180 degrees of electricity are provided per month per household, the online electricity selling profit of the operator is 100.8, and the online electricity selling definition profit is set to be 90, and the ratio of the two is known to be 0.9 through the expression in the influence degree coefficient of the support index of the operator.
The cost of outage loss, expressed as the operator's outage loss in a set planning period, refers to the economic loss to the operator due to outage events caused by power system failures, maintenance or other reasons, including direct losses such as reduction in electricity sales revenue, indirect losses such as reduction in customer satisfaction, impairment of brand image, etc.
The allowable cost for power outage loss refers to the maximum cost for power outage loss.
In a specific embodiment, the above-mentioned outage loss cost is set, taking the combined fertilizer as an example, the base selling price of the combined fertilizer is 0.56 yuan per degree, if the outage loss is 100 degrees, the outage loss cost of the operator is 56, and if the outage loss allowable cost is 100, the ratio of the two is 0.56 according to the expression in the influence degree coefficient of the support index of the operator.
The term "renewable energy operation maintenance cost" refers to various costs of the operator in a set planning period, which are incurred by the operator for maintaining and guaranteeing the normal operation of renewable energy power generation facilities, such as solar photovoltaic panels, wind turbines, etc., in the planning period, and include equipment overhaul, wages of maintenance personnel, procurement of spare parts, insurance costs of energy facilities, etc.
The definition of maintenance costs for renewable energy operation is expressed as the maximum value of the maintenance costs for renewable energy operation.
Indicated as a corresponding correction factor for a predefined online sales revenue,Expressed as a correction factor corresponding to a predefined outage loss cost,And e is a natural constant, and represents a correction factor corresponding to the predefined renewable energy operation maintenance cost.
Further, the influence degree coefficient of the economic index of the operator is specifically analyzed by the following steps:
And extracting and obtaining the dynamic investment recovery period of the operator according to the related information of the economic index of the operator, wherein the dynamic investment recovery period of the operator can be directly extracted and obtained from a project summary report of the operator.
And calculating based on basic formulas of cash inflow and outflow to obtain the net cash flow of the operator at each planning time point, thereby constructing a net cash flow change broken line of the operator, and extracting the profit angle value corresponding to each profit of the operator.
According to the net cash flow of the operator at each planning time point, constructing a net cash flow change broken line of the operator, wherein the abscissa of the net cash flow change broken line of the operator is the planning time point, and the unit is seconds as shown in fig. 2; the ordinate is net cash flow in millions.
And extracting and counting the profit angle values corresponding to each profit of the operator, as shown in fig. 2, the specific obtaining process of the profit angle values is as follows:
According to the net cash flow change fold line of the operator, a profit straight line is positioned from the net cash flow change fold line, and according to a first horizontal straight line (2) in fig. 2, a minimum angle value of intersection between the profit straight line and the first horizontal straight line (2) is obtained and recorded as a profit angle value (1).
And extracting from the AC/DC power distribution network information base to obtain a profit angle limiting value.
In a specific embodiment, each independent variable can be estimated by constructing a regression analysis model, which can be the influence degree of renewable energy construction, renewable energy equipment upgrading, renewable energy service popularization and the like on the economic index of the dependent variable, so as to obtain the influence degree coefficient of the economic index of the operator.
In this embodiment, the factor of influence degree of the economic index of the operator is obtained by comprehensively analyzing the dynamic investment recovery period of the operator and the profit angle value corresponding to each profit of the operator, so that the factor is obtained by adopting a more accurate calculation method due to the fact that the factor of influence degree of the economic index of the operator is judged, and the specific expression is as follows:
Wherein the method comprises the steps of Expressed as a factor of influence of the economic index of the operator, in this embodiment, the excessive dynamic investment recovery period means that the operator needs a longer time to recover the investment, which can cause the funds to be occupied for a long time, and cannot be used for other potential high-return projects or emergency demands, thereby reducing the mobility and the use efficiency of the funds; the long period of funds recovery increases the financial risk to the operator; too small a value of the profit angle means that the operator's profit is weak and it is difficult to counter other operators with strong profit; too small a profit angle value may cause investors to have doubts on the prospects of operators, thereby affecting their investment decisions and fund support; in summary, the excessive dynamic investment recovery period and the too small profit angle of the operators will have negative effects on the factors of the degree of influence of the economic indicators of the operators, and in order to reduce these effects, the operators need to optimize the investment decisions, improve the profit capability, enhance the risk management, and so on, so as to improve the economic indicator performance and the comprehensive competitiveness.
Expressed as operator dynamic investment recovery period, means the total time required to cancel out the original investment cash value with the cash value of the net cash flow of the investment project taking into account the monetary time value, this index being the time required from the start of the investment to the time when the cumulative cash flow of the discount equals 0.
The profit angle value corresponding to the operations Shang Di j times of profit is the minimum angle value of the intersection between the profit straight line and the first horizontal straight line, and is recorded as the profit angle value.
The term "profit angle limit" refers to the minimum allowed by the profit angle.
An influence factor expressed as a unit value corresponding to a predefined dynamic investment recovery period,The correction factor, e, corresponding to the predefined value of the profit angle is a natural constant.
Specifically, the electric energy quality evaluation index influence degree coefficient at the power grid side comprises the following specific analysis processes:
According to the relevant information of the power quality evaluation index of the power grid side, the load point voltage qualification rate and the load point voltage deviation rate of the power grid side in a set planning period are extracted, wherein the load point voltage qualification rate and the load point voltage deviation rate of the power grid side in the set planning period can be extracted from a voltage monitoring device carried by renewable energy equipment.
And extracting and obtaining the qualification rate of the voltage definition of the load point and the deviation rate of the voltage definition of the load point from the AC/DC power distribution network information base.
In a specific embodiment, the correlation degree between different electric energy qualities and the whole electric energy quality of the power grid side can be calculated by applying a gray correlation analysis model, so that the electric energy quality evaluation index influence degree coefficient of the power grid side is obtained.
The above-mentioned power quality evaluation index influence degree coefficient at the power grid side is obtained by comprehensively analyzing the load point voltage qualification rate and the load point voltage deviation rate of the power grid side in a set planning period, so that the power quality evaluation index influence degree coefficient at the power grid side is obtained by adopting a more accurate calculation method in the embodiment due to the fact that the value of the power quality evaluation index influence degree at the power grid side is determined, and the specific expression is as follows:
Wherein the method comprises the steps of In this embodiment, when the voltage qualification rate of the load point is too low, the proportion of time that the voltage level in the power grid is qualified is lower than the total time, which directly reflects the instability of power supply of the power grid, the instability may cause that user equipment cannot normally operate, the performance and the service life of electric equipment are affected, even equipment damage is possibly caused, meanwhile, the overall stability and the safety of a power system are also affected by the reduction of the voltage qualification rate of the load point, and the risk of power grid faults is increased; the voltage deviation rate of the load point reflects the degree of difference between the actual voltage and the ideal voltage, when the voltage deviation rate of the load point is too high, voltage fluctuation in a power grid can be increased, so that the electric energy quality is reduced, the normal operation of electric equipment can be interfered, and the product quality and the production efficiency are affected; in the power quality evaluation index, the voltage qualification rate and the voltage deviation rate are two important parameters, and the values of the two important parameters directly reflect the quality of the power supply quality of the power grid, so that in order to ensure that the power quality evaluation index at the power grid side is in a good state, the change condition of the voltage qualification rate and the voltage deviation rate of a load point needs to be closely concerned, and effective measures are adopted for adjustment and optimization.
The voltage qualification rate of the load point in the set planning period is expressed as the percentage of the ratio of the accumulated running time to the corresponding total running time of the actual running voltage in the allowable deviation range, reflects the proportion of the time with qualified voltage level in the power grid to the total time, and is one of important evaluation indexes of the power system.
The term "load point voltage definition yield" refers to the minimum value of the load point voltage yield.
The load point voltage deviation rate in the set planning period is expressed as the percentage of the difference between the actual voltage and the system nominal voltage to the system nominal voltage, and is affected by various factors including the voltage deviation of the line head end, the voltage drops of the high-voltage line and the low-voltage line, the transformer voltage drop variation, the voltage lifting of the transformer tap equipment and the like.
The load point voltage defined deviation rate is represented as the maximum value of the load point voltage deviation rate.
Expressed as a correction factor corresponding to a predefined load point voltage qualification rate,And e is a natural constant, and is expressed as a correction factor corresponding to a predefined load point voltage deviation rate.
Furthermore, in a specific embodiment, the evaluation index of the access effect of the renewable energy source in the ac/dc hybrid power distribution network can be obtained by training a neural network model, so that the complex relationship between the renewable energy source and the access effect can be learned, and the evaluation index of the access effect of the renewable energy source in the ac/dc hybrid power distribution network can be output.
In this embodiment, the evaluation index of the access effect of the renewable energy source in the ac/dc hybrid power distribution network is obtained by comprehensively analyzing the influence degree coefficient of the supporting index of the operator, the influence degree coefficient of the economic index of the operator and the influence degree coefficient of the electric energy quality evaluation index at the power grid side, so that the evaluation index of the access effect of the renewable energy source in the ac/dc hybrid power distribution network is determined, and in this embodiment, a more accurate calculation method is adopted to obtain, and a specific analysis formula is as follows:
Wherein the method comprises the steps of Expressed as an access effect evaluation index of renewable energy sources in an ac-dc hybrid power distribution network, in this embodiment, the operator support index relates to multiple aspects of equipment performance, service quality and the like, and if the influence degree coefficient of these indexes is too large, it may mean that the operator faces great technical and management challenges in terms of renewable energy source access, for example, unstable access or inefficiency of renewable energy source may be caused by poor performance of renewable energy source equipment; access to renewable energy sources generally requires a large amount of initial investment and operation cost, including equipment purchase, installation, debugging, post maintenance and other costs, and if an operator's economic index is not good, the investment in terms of renewable energy source access may be limited, so that the access effect evaluation index is affected; if the influence degree coefficient of the power quality evaluation index is too large, the power grid may be faced with a larger power quality problem when receiving renewable energy, and after the renewable energy is connected to the power grid, the problems of voltage fluctuation, harmonic interference and the like may be generated, so that the power quality of the power grid is influenced; in summary, the excessive influence degree coefficient of the support index of the operator, the influence degree coefficient of the economic index of the operator and the influence degree coefficient of the power quality evaluation index on the power grid side may have negative influence on the access effect evaluation index of the renewable energy source in the ac/dc hybrid power distribution network, so that when evaluating the access effect of the renewable energy source, the influence of these factors needs to be comprehensively considered, and corresponding measures are taken to perform optimization and improvement.
The value is expressed as an operator support index influence degree coefficient, and the value of the operator support index influence degree is obtained through comprehensive analysis of the online electricity selling income amount, the outage loss cost and the renewable energy operation maintenance cost of an operator in a set planning period.
The value is expressed as an influence degree coefficient of the economic index of the operator, and the value of the influence degree of the economic index of the operator is obtained through comprehensive analysis of the dynamic investment recovery period of the operator and the profit angle value corresponding to each profit of the operator.
The power quality evaluation index influence degree coefficient is expressed as a power grid side power quality evaluation index influence degree coefficient, and the power grid side power quality evaluation index influence degree coefficient is expressed as a power grid side power quality evaluation index influence degree value obtained through comprehensive analysis of the load point voltage qualification rate and the load point voltage deviation rate of the power grid side in a set planning period.
Represented as a weight factor corresponding to a predefined operator support indicator impact level coefficient,Expressed as a weight factor corresponding to a predefined operator economic indicator impact level coefficient,And the weight factors are represented as weight factors corresponding to the predefined power quality evaluation index influence degree coefficients at the power grid side.
And comprehensively analyzing and processing the stable operation evaluation degree of the distributed power supply in the AC/DC hybrid power distribution network and the access effect evaluation index of the renewable energy source in the AC/DC hybrid power distribution network to obtain the planning executable degree of the AC/DC hybrid power distribution network, comparing the planning executable degree with a set planning executable threshold value, and finally matching to obtain a planning preset plan of the AC/DC hybrid power distribution network.
Specifically, in one embodiment, the degree of executable planning of the ac-dc hybrid power distribution network may be obtained by performing comprehensive evaluation and decision-making through technical feasibility evaluation, economic cost benefit analysis, environmental impact evaluation, social acceptance investigation, and risk evaluation and management.
The above-mentioned plan executable degree of the ac-dc hybrid power distribution network is obtained by comprehensively analyzing the steady operation evaluation degree of the distributed power supply in the ac-dc hybrid power distribution network and the access effect evaluation index of the renewable energy source in the ac-dc hybrid power distribution network, so that the plan executable degree of the ac-dc hybrid power distribution network is judged, and in this embodiment, a more accurate calculation method is adopted to obtain the plan executable degree, and the specific analysis formula is as follows:
Wherein the method comprises the steps of In this embodiment, if the evaluation degree of stable operation of the distributed power source is too small, it means that the distributed power source may have larger instability and unreliability in the operation process, which may cause frequent faults, shutdown or performance degradation, affecting the overall stability and power supply reliability of the power distribution network; the AC/DC hybrid power distribution network needs to consider the access and the cooperative operation of the distributed power supply, if the steady operation evaluation degree of the distributed power supply is insufficient, the operation and maintenance difficulty and risk of the power distribution network are increased, and the performability of a planning scheme is reduced; the renewable energy access effect evaluation index is an important index for evaluating the access effect of renewable energy in the power distribution network, and if the evaluation index is too small, the access effect of the renewable energy is poor, and the expected economic benefit, environmental benefit or technical benefit may not be achieved; an important objective of the ac-dc hybrid distribution network planning is to promote access and digestion of renewable energy sources, if the access effect evaluation index is too small, the planning scheme is not attractive and feasible enough in terms of renewable energy source utilization, and the planning performability is reduced; in summary, the stability operation evaluation degree of the too small distributed power source and the access effect evaluation index of the renewable energy source reduce the executable degree of the planning of the ac-dc hybrid power distribution network, so that in order to ensure the effective implementation of the planning, the stability operation level of the distributed power source needs to be improved, the access strategy and the technical scheme of the renewable energy source are optimized, and the access effect evaluation index is improved, thereby enhancing the feasibility and the attraction of the planning scheme.
The evaluation degree of stable operation of the distributed power sources in the AC/DC hybrid power distribution network is obtained through comprehensive analysis of the power generation technology influence degree coefficients of the distributed power sources and the storage technology influence degree coefficients of the distributed power sources, and is used for judging the numerical value of the evaluation of stable operation of the distributed power sources in the AC/DC hybrid power distribution network.
The evaluation index of the access effect of the renewable energy source in the AC/DC hybrid power distribution network is obtained through comprehensive analysis of the influence degree coefficient of the support index of the operator, the influence degree coefficient of the economic index of the operator and the influence degree coefficient of the electric energy quality evaluation index at the power grid side.
Represented as a weight factor corresponding to a predefined steady operation rating of the distributed power supply,And e is a natural constant, and represents a weight factor corresponding to an access effect evaluation index of the predefined renewable energy source.
Further, the matching obtains a planning preset plan of the AC/DC hybrid power distribution network, and the specific analysis process is as follows:
comparing the planning executable degree of the AC-DC hybrid power distribution network with a set planning executable threshold, if the planning executable degree of the AC-DC hybrid power distribution network is lower than the planning executable threshold, the method may mean that major problems in technical, economic, environmental or social aspects exist in a planning scheme, and the project cannot be advanced on time or has to be cancelled; planning with low executable degree may cause that after a large amount of resources are input in the early stage, the scheme cannot be implemented continuously because of infeasibility, so that resource waste is caused; if the planning executable degree is insufficient, the problems of unreasonable power grid structure, improper equipment type selection and the like can be caused, and the stability of power supply is further affected.
And carrying out difference processing on the planning executable degree of the AC-DC hybrid power distribution network and the planning executable threshold value to obtain a planning executable deviation value of the AC-DC hybrid power distribution network, and matching the planning executable deviation value of the AC-DC hybrid power distribution network with a planning preset plan corresponding to each planning executable deviation value interval defined in an AC-DC power distribution network information base, thereby obtaining the planning preset plan of the AC-DC hybrid power distribution network.
The planning preset plan of the AC/DC hybrid power distribution network refers to a series of strategies and measures which are preset when the AC/DC hybrid power distribution network is constructed and planned so as to ensure the safe, reliable and efficient operation of the power distribution network; these protocols typically include the provision of detailed emergency protocols for various faults and anomalies that may occur, including fault identification, isolation, recovery, etc., to quickly address the incident.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.

Claims (8)

1.多层消纳模式下交直流混合配电网鲁棒规划方法，其特征在于，包括：1. A robust planning method for AC/DC hybrid distribution network under multi-layer consumption mode, characterized by comprising: 获取交直流混合配电网中各分布式电源的运行指标集，评估交直流混合配电网中分布式电源的稳定运行评价度；Obtain the operating index set of each distributed power source in the AC/DC hybrid distribution network, and evaluate the stable operation evaluation degree of the distributed power source in the AC/DC hybrid distribution network; 所述交直流混合配电网中分布式电源的稳定运行评价度，具体分析过程为：The specific analysis process of the stable operation evaluation degree of the distributed power source in the AC/DC hybrid distribution network is as follows: 根据交直流混合配电网中各分布式电源的运行指标集，其中运行指标集包括发电技术关联信息以及存储技术关联信息，分别评估各分布式电源的发电技术影响程度系数以及各分布式电源的存储技术影响程度系数综合分析，得到交直流混合配电网中分布式电源的稳定运行评价度；According to the operation index set of each distributed power source in the AC/DC hybrid distribution network, wherein the operation index set includes the power generation technology related information and the storage technology related information, the power generation technology influence coefficient of each distributed power source and the storage technology influence coefficient of each distributed power source are evaluated and analyzed comprehensively, and the stable operation evaluation degree of the distributed power source in the AC/DC hybrid distribution network is obtained; 对交直流混合配电网中可再生能源的接入效果相关数据进行采集处理，评估交直流混合配电网中可再生能源的接入效果评估指数；Collect and process data related to the access effect of renewable energy in AC/DC hybrid distribution networks, and evaluate the access effect evaluation index of renewable energy in AC/DC hybrid distribution networks; 所述交直流混合配电网中可再生能源的接入效果评估指数，具体分析过程为：The access effect evaluation index of renewable energy in the AC/DC hybrid distribution network is analyzed in detail as follows: 根据交直流混合配电网中可再生能源的接入效果相关数据，提取得到运营商支撑指标相关信息以及运营商经济指标相关信息、电网侧的电能质量评价指标相关信息，分别评估运营商支撑指标影响程度系数、运营商经济指标影响程度系数以及电网侧的电能质量评价指标影响程度系数综合分析，得到交直流混合配电网中可再生能源的接入效果评估指数；According to the data related to the access effect of renewable energy in the AC/DC hybrid distribution network, the information related to the operator support indicators, the operator economic indicators and the power quality evaluation indicators on the grid side are extracted, and the influence coefficients of the operator support indicators, the operator economic indicators and the power quality evaluation indicators on the grid side are evaluated respectively, and a comprehensive analysis is performed to obtain the access effect evaluation index of renewable energy in the AC/DC hybrid distribution network; 将交直流混合配电网中分布式电源的稳定运行评价度与交直流混合配电网中可再生能源的接入效果评估指数进行综合分析处理，得到交直流混合配电网的规划可执行程度，由此与设定的规划可执行阈值进行比对，最终匹配得到交直流混合配电网的规划预置预案。The stable operation evaluation degree of distributed power sources in the AC/DC hybrid distribution network and the access effect evaluation index of renewable energy in the AC/DC hybrid distribution network are comprehensively analyzed and processed to obtain the planning executable degree of the AC/DC hybrid distribution network, which is then compared with the set planning executable threshold to finally match the planning preset plan of the AC/DC hybrid distribution network. 2.根据权利要求1所述的多层消纳模式下交直流混合配电网鲁棒规划方法，其特征在于：所述匹配得到交直流混合配电网的规划预置预案，具体分析过程为：2. The robust planning method for AC/DC hybrid distribution network under multi-layer consumption mode according to claim 1 is characterized in that: the matching obtains the planning preset plan of the AC/DC hybrid distribution network, and the specific analysis process is: 将交直流混合配电网的规划可执行程度，与设定的规划可执行阈值进行比对，若交直流混合配电网的规划可执行程度低于规划可执行阈值，则将交直流混合配电网的规划可执行程度与规划可执行阈值进行差值处理，得到交直流混合配电网的规划可执行偏差值，将交直流混合配电网的规划可执行偏差值与交直流配电网信息库中定义的各规划可执行偏差值区间对应的规划预置预案进行匹配，由此得到交直流混合配电网的规划预置预案。The planning executable degree of the AC/DC hybrid distribution network is compared with the set planning executable threshold. If the planning executable degree of the AC/DC hybrid distribution network is lower than the planning executable threshold, the planning executable degree of the AC/DC hybrid distribution network and the planning executable threshold are difference processed to obtain the planning executable deviation value of the AC/DC hybrid distribution network. The planning executable deviation value of the AC/DC hybrid distribution network is matched with the planning preset plans corresponding to each planning executable deviation value interval defined in the AC/DC distribution network information database, thereby obtaining the planning preset plan of the AC/DC hybrid distribution network. 3.根据权利要求2所述的多层消纳模式下交直流混合配电网鲁棒规划方法，其特征在于：所述交直流混合配电网的规划可执行程度，具体分析公式为：3. The robust planning method for AC/DC hybrid distribution network under multi-layer consumption mode according to claim 2 is characterized in that: the planning executable degree of the AC/DC hybrid distribution network is specifically analyzed by the formula: 其中表示为交直流混合配电网的规划可执行程度，表示为交直流混合配电网中分布式电源的稳定运行评价度，表示为交直流混合配电网中可再生能源的接入效果评估指数，表示为预定义的分布式电源的稳定运行评价度对应的权重因子，表示为预定义的可再生能源的接入效果评估指数对应的权重因子，e为自然常数。in It is expressed as the planning feasibility of AC/DC hybrid distribution network. It is expressed as the stable operation evaluation degree of distributed generation in AC/DC hybrid distribution network. It is expressed as the access effect evaluation index of renewable energy in AC/DC hybrid distribution network, It is represented by the weight factor corresponding to the predefined stable operation evaluation degree of distributed power sources, It is expressed as the weight factor corresponding to the predefined renewable energy access effect evaluation index, and e is a natural constant. 4.根据权利要求3所述的多层消纳模式下交直流混合配电网鲁棒规划方法，其特征在于：所述各分布式电源的发电技术影响程度系数，具体分析过程为：4. The method for robust planning of AC/DC hybrid distribution network under multi-layer consumption mode according to claim 3 is characterized in that: the power generation technology influence coefficient of each distributed power source is specifically analyzed as follows: 根据各分布式电源的发电技术关联信息，提取得到各分布式电源在设定的规划周期内的累计发电量、发电效率、故障发生次数以及各次故障持续时长；According to the power generation technology correlation information of each distributed power source, the cumulative power generation, power generation efficiency, number of faults and duration of each fault of each distributed power source within the set planning period are extracted; 将各分布式电源在设定的规划周期内的故障发生次数以及各次故障持续时长，通过状态枚举法进行分析处理，最终得到各分布式电源在设定的规划周期内的发电可靠度；The number of faults of each distributed power source within the set planning period and the duration of each fault are analyzed and processed through the state enumeration method, and finally the power generation reliability of each distributed power source within the set planning period is obtained; 从交直流配电网信息库中提取得到发电参考量、发电界定效率，综合分析各分布式电源的发电技术影响程度系数。The power generation reference quantity and power generation efficiency are extracted from the AC/DC distribution network information database, and the power generation technology influence coefficient of each distributed power source is comprehensively analyzed. 5.根据权利要求4所述的多层消纳模式下交直流混合配电网鲁棒规划方法，其特征在于：所述各分布式电源的存储技术影响程度系数，具体分析过程为：5. The method for robust planning of AC/DC hybrid distribution network under multi-layer consumption mode according to claim 4 is characterized in that: the storage technology influence coefficient of each distributed power source is specifically analyzed as follows: 根据各分布式电源的存储技术关联信息，提取得到各分布式电源在设定的规划周期内的累计存储量以及存储效率；According to the storage technology association information of each distributed power source, the cumulative storage capacity and storage efficiency of each distributed power source within the set planning period are extracted; 从交直流配电网信息库中提取得到存储参考量以及存储界定效率，综合分析各分布式电源的存储技术影响程度系数。The storage reference quantity and storage definition efficiency are extracted from the AC/DC distribution network information database, and the storage technology influence coefficient of each distributed power source is comprehensively analyzed. 6.根据权利要求5所述的多层消纳模式下交直流混合配电网鲁棒规划方法，其特征在于：所述运营商支撑指标影响程度系数，具体分析过程为：6. The method for robust planning of AC/DC hybrid distribution network under multi-layer consumption mode according to claim 5 is characterized in that: the influence degree coefficient of the operator support index is specifically analyzed as follows: 根据运营商支撑指标相关信息，提取得到运营商在设定的规划周期内的上网售电收益额、停电损失成本以及可再生能源运行维护成本；Based on the information related to the operator's support indicators, the operator's on-grid electricity sales revenue, power outage loss costs, and renewable energy operation and maintenance costs within the set planning period are extracted; 从交直流配电网信息库中提取得到上网售电界定收益额、停电损失许可成本以及可再生能源运行界定维护成本，综合分析运营商支撑指标影响程度系数。The defined revenue amount of grid-connected electricity sales, the permitted cost of power outage losses, and the defined maintenance cost of renewable energy operation are extracted from the AC/DC distribution network information database, and the influence coefficient of operator support indicators is comprehensively analyzed. 7.根据权利要求6所述的多层消纳模式下交直流混合配电网鲁棒规划方法，其特征在于：所述运营商经济指标影响程度系数，具体分析过程为：7. The method for robust planning of AC/DC hybrid distribution network under multi-layer consumption mode according to claim 6 is characterized in that: the influence degree coefficient of the operator's economic indicators is specifically analyzed as follows: 根据运营商经济指标相关信息，提取得到运营商动态投资回收期；According to the relevant information of the operator's economic indicators, the operator's dynamic investment payback period is extracted; 基于现金流入和流出量的基本公式进行计算，得到运营商在各规划时间点下的净现金流量，由此构建运营商的净现金流量变化折线，并从中提取出运营商各次盈利对应的盈利角度值；Based on the basic formula of cash inflow and outflow, the net cash flow of the operator at each planning time point is calculated, and the net cash flow change curve of the operator is constructed, from which the profit angle value corresponding to each profit of the operator is extracted; 从交直流配电网信息库中，提取得到盈利角度界定值，综合分析运营商经济指标影响程度系数。The profit-oriented definition value is extracted from the AC/DC distribution network information database, and the influence coefficients of the operator's economic indicators are comprehensively analyzed. 8.根据权利要求7所述的多层消纳模式下交直流混合配电网鲁棒规划方法，其特征在于：所述电网侧的电能质量评价指标影响程度系数，具体分析过程为：8. The method for robust planning of AC/DC hybrid distribution network under multi-layer consumption mode according to claim 7 is characterized in that: the influence degree coefficient of the power quality evaluation index on the grid side is specifically analyzed as follows: 根据电网侧的电能质量评价指标相关信息，提取得到电网侧在设定的规划周期内的负荷点电压合格率以及负荷点电压偏差率；According to the relevant information of the power quality evaluation index on the grid side, the load point voltage qualification rate and the load point voltage deviation rate on the grid side within the set planning period are extracted; 从交直流配电网信息库中，提取得到负荷点电压界定合格率以及负荷点电压界定偏差率，综合分析电网侧的电能质量评价指标影响程度系数。From the AC/DC distribution network information database, the load point voltage qualification rate and load point voltage definition deviation rate are extracted, and the influence coefficient of the power quality evaluation index on the grid side is comprehensively analyzed.
CN202410659256.7A 2024-05-27 2024-05-27 Robust planning method for AC/DC hybrid distribution network under multi-layer consumption mode Active CN118246637B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410659256.7A CN118246637B (en) 2024-05-27 2024-05-27 Robust planning method for AC/DC hybrid distribution network under multi-layer consumption mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410659256.7A CN118246637B (en) 2024-05-27 2024-05-27 Robust planning method for AC/DC hybrid distribution network under multi-layer consumption mode

Publications (2)

Publication Number Publication Date
CN118246637A CN118246637A (en) 2024-06-25
CN118246637B true CN118246637B (en) 2024-10-01

Family

ID=91553468

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410659256.7A Active CN118246637B (en) 2024-05-27 2024-05-27 Robust planning method for AC/DC hybrid distribution network under multi-layer consumption mode

Country Status (1)

Country Link
CN (1) CN118246637B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106056290A (en) * 2016-06-03 2016-10-26 国家电网公司 Power transmission network operating efficiency and benefit detection method considering new energy access
CN108269025A (en) * 2018-02-02 2018-07-10 国网四川省电力公司天府新区供电公司 Source lotus peer-to-peer electric energy exchange method based on " internet+"

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109598377B (en) * 2018-11-28 2020-12-22 国网江苏省电力有限公司 AC/DC hybrid power distribution network robust planning method based on fault constraint
CN115640963A (en) * 2022-10-12 2023-01-24 上海电力大学 Offshore wind power access system robust planning method considering investment operation mode
CN116029614A (en) * 2023-02-14 2023-04-28 深圳供电局有限公司 Power quality assessment method, device and computer equipment in distribution network platform area

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106056290A (en) * 2016-06-03 2016-10-26 国家电网公司 Power transmission network operating efficiency and benefit detection method considering new energy access
CN108269025A (en) * 2018-02-02 2018-07-10 国网四川省电力公司天府新区供电公司 Source lotus peer-to-peer electric energy exchange method based on " internet+"

Also Published As

Publication number Publication date
CN118246637A (en) 2024-06-25

Similar Documents

Publication Publication Date Title
CN102509178B (en) Distribution network device status evaluating system
CN112907129A (en) Energy storage comprehensive benefit evaluation index system
CN108122068A (en) A kind of power distribution network risk-averse retailer method and system
CN102983629A (en) Auxiliary decision-making method for on-line power system restoration
CN112149842A (en) A kind of maintenance management method and device for power grid
Huo et al. A reliability-aware chance-constrained battery sizing method for island microgrid
CN111738573A (en) A health assessment method based on life cycle data of electric energy meters
CN106056290A (en) Power transmission network operating efficiency and benefit detection method considering new energy access
CN111428938A (en) A transmission network scheme optimization method based on functional differences and full life cycle
CN119628021B (en) A method for optimizing energy storage power stations based on graph computing
CN112001569A (en) A risk analysis method of power grid operation based on multi-voltage level faults
CN114491935A (en) A method and system for optimizing the capacity of distribution network equipment and line selection and configuration
CN106570632A (en) Mobile-terminal-based loss reduction and energy conservation analysis system for grid
CN119228398A (en) Park energy carbon supervision method and system
CN118508453A (en) Low-carbon micro-grid planning method
Xiang et al. Coordinated DG-Tie planning in distribution networks based on temporal scenarios
CN118246637B (en) Robust planning method for AC/DC hybrid distribution network under multi-layer consumption mode
CN120163461A (en) A multi-objective collaborative planning method for source, grid, load and storage in distribution network
Gu et al. Provincial technical loss reduction platform with interactive management and control considering reactive power compensation potential of power supply and consumption sides
Liu et al. Research on power grid planning evaluation system and method considering the reform of transmission and distribution price
CN118917736A (en) Micro-grid flexible supply multi-period energy storage value evaluation method
CN107153878A (en) Transformer based on annual value costs such as life cycle managements changes aid decision-making method
CN110119879A (en) A kind of power engineering life cycle cost research method based on system dynamics
Fang et al. Life cycle cost assessment of condition monitoring sensors in smart distribution room
CN116342098A (en) A double-layer optimization method for maintenance and decommissioning of electric overage equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant