CN114152896A - Misalignment replacing system based on acquisition platform - Google Patents
Misalignment replacing system based on acquisition platform Download PDFInfo
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Abstract
The invention discloses a misalignment replacing system based on an acquisition platform, which relates to the technical field of power monitoring and comprises the acquisition platform, wherein the acquisition platform is in communication connection with a data acquisition module, a data processing module and a data analysis module; the data acquisition module consists of a plurality of ammeter data acquisition terminals and a distribution room data acquisition terminal, wherein the ammeter data acquisition terminals are used for acquiring the operation parameters of the intelligent electric energy meter, and the distribution room data acquisition terminals are used for acquiring the electricity use parameters of the distribution room; the data processing module is used for establishing a singular variance user optimization model and a transformer area power utilization error model according to the electric quantity use data of the intelligent electric energy meter and the transformer area power utilization data acquired by the data acquisition module; and finally, analyzing the electric quantity use parameters of the transformer area and the electricity utilization data of the intelligent electric energy meter through a data analysis module.
Description
Technical Field
The invention belongs to the technical field of power monitoring, and particularly relates to a misalignment replacement system based on an acquisition platform.
Background
The electric power system is an electric energy production and consumption system which consists of links such as a power plant, a power transmission and transformation line, a power supply and distribution station, power utilization and the like. The system has the functions that primary energy in the nature is converted into electric energy through a power generation power device, and then the electric energy is supplied to each user through power transmission, power transformation and power distribution; in order to realize the function, the power system is also provided with corresponding information and control systems at each link and different levels, and the production process of the electric energy is measured, regulated, controlled, protected, communicated and scheduled so as to ensure that users obtain safe and high-quality electric energy;
in the prior art, the electric quantity used by the intelligent electric meter can only be monitored, and the abnormal conditions such as leakage current and the like in a circuit system cannot be timely perceived, so that unnecessary power loss is caused.
Disclosure of Invention
The invention aims to provide a misalignment replacement system based on an acquisition platform.
The purpose of the invention can be realized by the following technical scheme: the misalignment replacing system based on the acquisition platform comprises the acquisition platform, wherein the acquisition platform is in communication connection with a data acquisition module, a data processing module and a data analysis module;
the data acquisition module consists of a plurality of ammeter data acquisition terminals and a distribution room data acquisition terminal, wherein the ammeter data acquisition terminals are used for acquiring the operation parameters of the intelligent electric energy meter, and the distribution room data acquisition terminals are used for acquiring the electricity use parameters of the distribution room; the data processing module is used for establishing a singular variance user optimization model and a transformer area power utilization error model according to the electric quantity use data of the intelligent electric energy meter and the transformer area power utilization data acquired by the data acquisition module; and finally, analyzing the electric quantity use parameters of the transformer area and the electricity utilization data of the intelligent electric energy meter through a data analysis module.
Further, the process that the ammeter data acquisition terminal acquires the operating parameters of the intelligent electric energy meter comprises:
installing an ammeter data acquisition terminal in each intelligent electric energy meter, acquiring the position of the ammeter data acquisition terminal, and recording all ammeter data acquisition terminals in the same distribution area range as an ammeter data acquisition terminal group according to the position of the ammeter data acquisition terminal; the electric quantity use data of the corresponding intelligent electric energy meters are acquired through the electric energy data acquisition terminal, and the electric quantity use data of each intelligent electric energy meter are frozen at specific time every day, so that the frozen electric quantity is acquired, and the frozen electric quantity is recorded as daily electric quantity of the intelligent electric energy meter.
Further, the process of the station area data acquisition terminal acquiring the station area electricity usage parameters includes:
and a plurality of power consumption metering points are arranged in the range of each distribution area, a distribution area data acquisition terminal is arranged at the power consumption metering points of each distribution area, and the power consumption data of the distribution area are acquired through the distribution area data acquisition terminal.
Further, the process of establishing the singular variance user optimization model includes:
the method comprises the steps that the average value of daily electricity consumption of users in a distribution area is obtained by taking a month as a unit, then the variance of the daily electricity consumption of the users is obtained, a variance threshold value is set, when the variance of the daily electricity consumption of the users is larger than the variance threshold value, the users are marked as singular variance users, and the intelligent electric energy meter of the singular variance users is marked;
and when the variance of the daily electricity consumption of the user is smaller than the variance threshold value, the daily electricity consumption of the user is continuously constant, no large electricity consumption fluctuation exists, and the user is marked as a constant user.
Further, the process of establishing the power utilization error model of the distribution room comprises:
calculating to obtain the fitting power consumption of each intelligent electric energy meter according to the error value of each intelligent electric energy meter and the corresponding daily electric energy meter, summarizing the fitting power consumption of all the intelligent electric energy meters to obtain the total fitting power consumption of the user, summarizing the daily electric consumption of all the intelligent electric energy meters to obtain the real total power consumption of the user, taking the difference between the total power supply quantity of the transformer area and the total fitting power consumption of the user as a fitting residual error, taking the difference between the total power supply quantity of the transformer area and the real power consumption of the user as an actual residual error, evaluating a model result by calculating the root mean square error of the fitting residual error and the actual residual error, obtaining the evaluation coefficient of the transformer area power consumption error model, and judging the reliability of the model calculation result by the evaluation coefficient of the transformer area power consumption error model.
Further, the data analysis module is used for analyzing the electricity usage parameters of the distribution room and the electricity consumption data of the intelligent electric energy meter, and the analysis process comprises the following steps:
the method comprises the steps that a line between two electricity utilization metering points is used as an analysis unit, an intelligent electric energy meter between the two electricity utilization metering points is marked as a load metering point, a tree topology is formed by the relation between the electricity utilization metering points and the load metering points, and the electricity utilization metering points provide electricity quantity input for the next-stage load metering point through the line.
Based on the topological structure and the energy conservation law, a relational equation of the electric quantity of the line electricity consumption metering point, the electric quantity of the load metering point, the line loss and the equipment fixed loss is established:
the electricity consumption of the line electricity consumption metering points is equal to the electricity consumption of each load metering point, the line loss and the equipment fixed loss.
Furthermore, when the data acquisition module acquires the electricity utilization data of the transformer area, the time for uploading the electricity utilization data of the transformer area to the data processing module is consistent with the time for uploading the electricity utilization data of the intelligent electric energy meter to the data processing module.
Further, the electricity consumption data of the distribution room comprises power supply quantity, line loss electricity quantity, total electricity selling quantity and electricity consumption quantity of electricity consumption metering points.
Compared with the prior art, the invention has the beneficial effects that: the station area coverage, the intelligent electric energy meter coverage and the abnormity checking accuracy which are evaluated by analyzing the state of the intelligent electric energy meter are subjected to multi-angle analysis, service personnel can deeply know the application condition of the module from multiple angles, power consumption metering points are arranged in the range of the station area, and whether electric leakage points exist in the range of the station area is judged through the relation between the power supply quantity and the power selling quantity of the power consumption metering points, so that the power is prevented from being lost accidentally or being stolen illegally.
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Fig. 1 is a schematic diagram of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a misalignment replacement system based on an acquisition platform includes an acquisition platform, wherein the acquisition platform is communicatively connected with a data acquisition module, a data processing module, and a data analysis module;
the data acquisition module consists of a plurality of ammeter data acquisition terminals and a distribution room data acquisition terminal, wherein the ammeter data acquisition terminals are used for acquiring the operation parameters of the intelligent electric energy meter, and the distribution room data acquisition terminals are used for acquiring the electricity use parameters of the distribution room;
the process that the ammeter data acquisition terminal obtains the operating parameters of the intelligent electric energy meter specifically includes:
installing an electric meter data acquisition terminal in each intelligent electric energy meter, numbering the electric meter data acquisition terminals, and recording as i, i is 1, 2, … …, n, n is an integer;
acquiring the position of an ammeter data acquisition terminal, and recording all ammeter data acquisition terminals in the same distribution area range as an ammeter data acquisition terminal group according to the position of the ammeter data acquisition terminal;
acquiring corresponding electric quantity use data of the intelligent electric energy meter through the electric energy data acquisition terminal, and enabling the electric quantity use data to be acquiredFreezing the electricity consumption data of each intelligent electric energy meter at specific time every day to obtain frozen electricity, recording the frozen electricity as daily electricity of the intelligent electric energy meter, and marking the daily electricity of the k day of each intelligent electric energy meter as BRDk,iAnd then uploading the daily electric quantity of each intelligent electric energy meter to the data processing module.
The specific process of the station area data acquisition terminal for acquiring the station area electric quantity use parameters comprises the following steps:
setting a plurality of power consumption metering points in the range of each distribution area, marking each power consumption metering point, installing a distribution area data acquisition terminal at each power consumption metering point of each distribution area, recording the distribution area data acquisition terminal as j, wherein j is 1, 2, … …, and m is an integer, and acquiring power consumption data of the distribution area, wherein the power consumption data of the distribution area comprises power supply quantity, line loss quantity, total power sale quantity and power consumption of the power consumption metering points;
respectively recording the power supply quantity, the line loss quantity, the total electricity sales quantity and the electricity consumption quantity of each electricity consumption metering point on the k day of the distribution room as TGDk,j、XSDk,j、ZSDk,jAnd JLDk,jAnd then uploading the power supply amount, the line loss amount, the total electricity selling amount and the electricity consumption amount of the electricity consumption metering point of the distribution room to a data processing module.
It should be further noted that, in a specific implementation process, when the data acquisition module acquires the electricity consumption data of the distribution room, time for uploading the electricity consumption data of the distribution room to the data processing module is consistent with time for uploading the electricity consumption data of the intelligent electric energy meter to the data processing module, so that time delay between the electricity consumption data of the distribution room and the electricity consumption data of the intelligent electric energy meter is avoided, and a large difference is generated in a data analysis result;
the data processing module is used for processing the electric quantity use data of the intelligent electric energy meter and the electricity utilization data of the transformer area, which are acquired by the data acquisition module, and the specific processing process comprises the following steps:
respectively establishing a singular variance user optimization model and a power utilization error model of a transformer area;
the process for establishing the singular variance user optimization model comprises the following steps:
the method comprises the steps that the average value of daily electricity consumption of users in a distribution area is obtained by taking a month as a unit, then the variance of the daily electricity consumption of the users is obtained, a variance threshold value is set, when the variance of the daily electricity consumption of the users is larger than the variance threshold value, the users are marked as singular variance users, and the intelligent electric energy meter of the singular variance users is marked;
when the variance of the daily electricity consumption of the user is smaller than the variance threshold value, the daily electricity consumption of the user is continuously constant, no large electricity consumption fluctuation exists, and the user is marked as a constant user;
it should be further explained that, in the specific implementation process, when the daily electricity consumption of the user is constant, it indicates that the electricity consumption of the user is continuously constant, and there is no large electricity consumption fluctuation, and for the intelligent electric energy meter, the signal equivalent to the intelligent electric energy meter is weak, which easily causes insensitivity in the analysis process, thereby causing the inaccurate analysis result;
it is further noted that, in the specific implementation process, the station area power utilization error model can obtain an error value of each intelligent electric energy meter, the fitting power consumption of each intelligent electric energy meter is obtained through calculation according to the error value of each intelligent electric energy meter and the corresponding daily power consumption, the fitting power consumption of all the intelligent electric energy meters is summarized to obtain the total fitting power consumption of the user, the daily power consumption of all the intelligent electric energy meters is summarized to obtain the total real power consumption of the user, then, the difference between the total power consumption of the station area and the total fitting power consumption of the user is a fitting residual error, the difference between the total power consumption of the station area and the total real power consumption of the user is an actual residual error, and the Root Mean Square Error (RMSE) of the fitting residual error and the actual residual error is calculated to evaluate the model result so as to judge the reliability of the model calculation result;
the establishing process of the power utilization error model of the transformer area comprises the following steps:
obtaining the error value of each intelligent electric energy meter and recording the error value as ei;
Obtaining the line loss electricity quantity of the kth antenna of the transformer area, and recording the line loss of the kth antenna as XSk;
By the formula:
(1+e1)φk,1+(1+e2)φk,2+…+(1+ei)φk,i+XSk=ykobtaining the fitting total electricity consumption y of the k day of the userkWherein phik,iRandomly calibrating error coefficients of the intelligent electric energy meter marked as i on the kth day;
Then, respectively obtaining fitting residual errors NC of the total power supply amount of the distribution room and the total fitting power consumption amount of the userkAnd the actual residual error SC of the total power supply amount of the distribution room and the actual power consumption total amount of the usersk;
Then by the formulaObtaining the evaluation coefficient PX of the station area power utilization error model, it should be further explained that, in the specific implementation process, the smaller the evaluation coefficient PX of the station area power utilization error model is, the more accurate the calculation result of the station area power utilization error model is.
The data analysis module is used for analyzing the electricity usage parameters of the transformer area and the electricity consumption data of the intelligent electric energy meter, and the specific analysis process comprises the following steps:
by the formula ZSDk,j=TGDk,j-ZSDk,j-JLDk,j+ alpha obtains total electricity sales ZSD of districtk,jThe relation between the power supply quantity, the line loss quantity and the electricity consumption quantity of the electricity consumption metering point, wherein alpha is the extra electricity quantity;
the method comprises the steps that a line between two electricity utilization metering points is used as an analysis unit, an intelligent electric energy meter between the two electricity utilization metering points is marked as a load metering point, a simple tree topology is formed by the relation between the electricity utilization metering points and the load metering points, and the electricity utilization metering points provide electricity input for the next-stage load metering point through the line.
Based on the topological structure and the energy conservation law, the general mathematical relation of the power consumption of the intelligent electric energy meter can be obtained, and a relation equation of a line inflow metering point, a special public variable metering meter, an operation error, line loss and fixed loss of metering equipment is established, wherein the relation equation specifically comprises the following steps:
the electricity consumption of the line electricity consumption metering points is equal to the electricity consumption of each load metering point, the line loss and the equipment fixed loss.
By optimizing an equation set, introducing the concept of a relative error weighted average value of electricity metering points, constructing an equation based on the average value, eliminating random noise influence and improving the accuracy of an error model;
set up extra power consumption threshold value, and compare extra electric quantity alpha and extra power consumption threshold value, when extra electric quantity alpha surpasses extra power consumption threshold value, then show that there is electric power loss point in the circuit between the power consumption metering point, then mark these two power consumption metering points and the circuit that corresponds, then send to the collection platform, after the information was received to the collection platform, then can arrange personnel to investigate corresponding power consumption metering point and circuit according to information content, thereby eliminate unusual point. The method comprises the steps of analyzing the coverage degree of a transformer area, the coverage degree of an intelligent electric energy meter and the abnormal checking accuracy of the state evaluation of the intelligent electric energy meter to analyze the multiple angles, enabling service personnel to understand the application condition of a module at multiple angles, setting power consumption metering points in the transformer area, and judging whether electric leakage points exist in the transformer area through the relation between the power supply quantity and the electricity selling quantity of the transformer area to the power consumption metering points, so that the electric power is prevented from being lost accidentally or stolen illegally.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
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CN115656914A (en) * | 2022-12-12 | 2023-01-31 | 湖南省计量检测研究院 | Smart electric meter metering accuracy detection method and device based on big data |
CN116166857A (en) * | 2023-04-26 | 2023-05-26 | 国网吉林省电力有限公司信息通信公司 | Big data-based power data processing system |
CN117992889A (en) * | 2024-01-15 | 2024-05-07 | 国网江苏省电力有限公司营销服务中心 | Medium-high voltage misalignment monitoring system based on big data analysis |
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CN117992889A (en) * | 2024-01-15 | 2024-05-07 | 国网江苏省电力有限公司营销服务中心 | Medium-high voltage misalignment monitoring system based on big data analysis |
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