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WO2011048944A1 - Appareil de commande, système d'énergie et procédé de commande de celui-ci - Google Patents

Appareil de commande, système d'énergie et procédé de commande de celui-ci Download PDF

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Publication number
WO2011048944A1
WO2011048944A1 PCT/JP2010/067456 JP2010067456W WO2011048944A1 WO 2011048944 A1 WO2011048944 A1 WO 2011048944A1 JP 2010067456 W JP2010067456 W JP 2010067456W WO 2011048944 A1 WO2011048944 A1 WO 2011048944A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
node
power source
controllable load
amount
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.)
Ceased
Application number
PCT/JP2010/067456
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English (en)
Japanese (ja)
Inventor
寿人 佐久間
耕治 工藤
由紀子 森岡
廣生 本郷
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP2011537199A priority Critical patent/JP5527325B2/ja
Publication of WO2011048944A1 publication Critical patent/WO2011048944A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—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
    • H02J3/12—Circuit arrangements for AC mains or AC distribution networks for adjusting voltage in AC networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for AC mains or AC distribution networks for adjusting voltage in AC networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H02J2101/20—
    • H02J2105/52—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving

Definitions

  • the present invention relates to a control device for controlling an energy system in which a renewable power source is linked to a distribution system, the energy system, and a control method thereof.
  • a solar cell (PV: Photo voltaic) is one of the most promising renewable power sources.
  • PV Photo voltaic
  • solar power generation using solar cells has a problem that the output changes depending on the weather, that is, the power generation amount is unstable. Therefore, when many photovoltaic power generation facilities are connected to the distribution system, it is predicted that the distribution system will be adversely affected and the distribution voltage becomes unstable.
  • the unstable distribution voltage means that the voltage of the low-voltage distribution line (approximately 100V or 200V in Japan) supplied to each consumer such as a private house, business office, or municipal facility is an unstable amount of power generated by the renewable power source. It is a problem that fluctuates and is outside the aptitude range.
  • the electric power sent from the distribution substation at a high voltage is a low voltage (about 100V in Japan) at the lowest voltage transformer (hereinafter referred to as pole transformer) in the distribution system. About 200V) and supplied to each consumer.
  • pole transformer the lowest voltage transformer
  • electric power is distributed from 10 pole transformers to 10 to 20 households (in the case of detached houses).
  • the distribution voltage fluctuates according to the power demand (power consumption).
  • power demand power consumption
  • the direction of current flow is one direction from the distribution substation to each customer, and the fluctuation in power demand was sufficiently small, so the distribution voltage was within the appropriate range (101V ⁇ 6V or 202 ⁇ 20V in Japan). It was.
  • autonomous control or self-end control
  • remote control or centralized control
  • PCS Power Conditioning Subsystem
  • the PCS includes a PV, an inverter that enables the power generated by the PV to be linked to a distribution system, and a storage battery that stores the power generated by the PV.
  • the distribution voltage is monitored by this PCS, and when the distribution voltage approaches the upper limit of the appropriate range, the power generation amount of PV is suppressed, or the increase of the distribution voltage can be suppressed by storing electric power in the storage battery.
  • Patent Document 1 describes that the amount of power generated by a plurality of PV and the storage battery that stores the power generated by the PV are controlled via an information network.
  • Patent Document 2 describes a method for resolving inequalities in the amount of generated power in money while controlling a renewable power source via an information network to optimally adjust the distribution voltage and power flow. Yes.
  • the output suppression described above is a waste of the power generation capability of the renewable power source, it is desirable that the amount of power to be suppressed is as small as possible.
  • the amount of increase in power consumption due to the controllable load is not always effectively used by the controllable load, for example, by heat pumps or storage batteries, so that the energy stored for solving the voltage deviation is not always used effectively. It is desirable to have as little as possible.
  • Patent Document 1 is a configuration intended to increase the power supply capacity to an emergency load or the like during a self-sustained operation, and does not propose a configuration for eliminating voltage deviation.
  • Patent Document 2 since the system described in Patent Document 2 does not consider control of a controllable load, there is a possibility that the amount of electric power that is suppressed by a renewable power source increases.
  • the present invention provides a control device for controlling an energy system capable of minimizing the total amount of output suppression by each renewable power source and the amount of increase in power consumption of a controllable load, the energy system, and a control method thereof. With the goal.
  • the control device of the present invention is provided with each consumer having at least one of a renewable power source and a controllable load connected to a power distribution system via a node, and generates power by the renewable power source.
  • a control device connected via a network with a consumer terminal capable of controlling output and controlling power consumption by the controllable load, When it is detected that the distribution voltage of the power distribution system has deviated from a predetermined voltage, the regeneration provided for the node connected to the customer whose voltage has deviated and the customer connected to the node downstream from the node It has a processing device that outputs a command for suppressing the power generation amount of the power source and increasing the power consumption by the controllable load to the consumer terminal of the consumer.
  • the energy system of the present invention is an energy system in which a customer having at least one of a renewable power source or a controllable load is connected to a power distribution system via a node, A consumer terminal installed for each consumer, capable of controlling power output by the regenerative power source and controlling power consumption by the controllable load; When connected to the customer terminal via a network and detecting that the distribution voltage of the distribution system has deviated from a predetermined voltage, the node to which the customer deviating from the voltage is connected and downstream of the node.
  • the energy system control method of the present invention is a method for controlling an energy system in which a customer having at least one of a renewable power source or a controllable load is connected to a power distribution system via a node, When it is detected that the distribution voltage from the distribution system has deviated from a predetermined voltage, the node connected to the customer detecting the voltage deviation and the customer connected to a node downstream from the node are provided. This is a method for suppressing the output of a renewable power source and increasing the amount of power consumed by the controllable load provided by the consumer.
  • FIG. 1 is a schematic diagram showing a simplified configuration of a power distribution system.
  • FIG. 2 is a schematic diagram showing how each node is connected to a renewable power source and a controllable load via a columnar transformer.
  • FIG. 3 is a block diagram showing a configuration example of the energy system of the present invention.
  • FIG. 4 is a block diagram illustrating a configuration example of the control device illustrated in FIG. 3.
  • FIG. 5 is a block diagram showing a configuration example of the customer terminal shown in FIG.
  • FIG. 6 is a flowchart showing a processing procedure of the control device shown in FIG.
  • the energy system of the present invention includes a control device that collectively manages the output suppression amount of the renewable power source provided to each consumer and the power of the controllable load, and the control device distributes the interconnection points for each consumer. Collects voltage values and allocates the amount of power suppression by each renewable power source and the power consumption by controllable load when voltage deviation occurs.
  • voltage deviation occurs, for example, a renewable power source and a controllable load connected to a pole transformer, a renewable power source connected to each column transformer downstream from the column transformer, and The output control and the controllable load are controlled by the controllable load.
  • downstream refers to a power distribution system including a pole transformer farther from the distribution transformer as viewed from the pole transformer where voltage deviation occurs.
  • the total amount of control power (the output suppression amount of the renewable power source and the power consumption by the controllable load) is minimized. Moreover, since more controllable loads can be used compared to the background art, the amount of power discarded without being used can be reduced.
  • FIG. 1 is a schematic diagram showing a simplified configuration of a power distribution system.
  • FIG. 1 shows a state where a renewable power source (G) and a controllable load (L) are interconnected at four locations to a distribution line connected to a distribution transformer provided in the distribution substation.
  • G renewable power source
  • L controllable load
  • connection point between the renewable power source (G) and the controllable load (L) and the distribution line is referred to as a “node”, and from the connection point close to the distribution transformer toward the connection point far from the distribution transformer. Nodes 1, 2, 3, and 4 are defined.
  • each node, a renewable power source (G), and a controllable load (L) are normally connected via a columnar transformer.
  • a plurality of renewable power sources (G) and controllable loads (L) connected to each node are collectively shown as one.
  • the current flowing from the nodes 1 to 4 to the pole transformer is i 1 to i 4
  • the distribution voltage at the nodes 1 to 4 is V 1 to V 4
  • the resistance value of the distribution line between the nodes is R.
  • the distribution voltages V 2 to V 4 are expressed by the following formulas (1) to (3).
  • the sum of the currents to be suppressed can be minimized, and the distribution voltage V 4 can be reduced. If it is desired to lower the current i 4 flowing from the node 4 to the distribution line, the sum of the currents to be suppressed can be minimized.
  • the renewable power source and the controllable load connected to the node where the voltage deviation occurs, and the renewable power source and the controllable load connected to each node downstream from the node are included.
  • FIG. 3 is a block diagram showing a configuration example of the energy system of the present invention.
  • the energy system of the present invention includes a plurality of customer terminals 2 and a control device 1, and each customer terminal 2 and the control device 1 are connected via a network.
  • the distribution line connected to the distribution substation is connected to a plurality of consumers (customer groups) via pole transformers, and the consumer terminal 2 can be a renewable power source, a controllable load, or both It is installed for every consumer with
  • the customer terminal 2 is realized by a computer that can communicate with a network, for example.
  • the control device 1 is realized by a computer that can communicate with each customer terminal 2 included in the energy system.
  • the network may have a configuration using PLC (Power Line Communications) or BPL (Broadband over Power Lines) using the power line, the Internet, or a dedicated line.
  • PLC Power Line Communications
  • BPL Broadband over Power Lines
  • FIG. 4 is a block diagram showing a configuration example of the control apparatus shown in FIG. 3
  • FIG. 5 is a block diagram showing a configuration example of the customer terminal shown in FIG.
  • control device 1 includes a communication device 11, a processing device 12, and a storage device 13.
  • the communication device 11 is an interface for communicating with each customer terminal 2 via a network.
  • the processing device 12 includes a CPU that executes processing according to a program, and executes processing as the control device 1 described later.
  • the storage device 13 includes a distribution network information database in which information indicating the configuration of the distribution network and the regenerative power supply for each customer, and information indicating the interconnection position of the controllable load with respect to the distribution network, the regenerative power supply and the controllable load And a control record database in which the control records are stored.
  • the customer terminal 2 includes a communication device 21, a processing device 25, a storage device 26, a voltage measurement unit 22, a first control interface 23, a second control interface 24, and a user interface 27. Yes.
  • the processing device 25 includes a CPU that executes processing according to a program, measures the distribution voltage using the voltage measurement unit 22, and is provided by the customer via the first control interface 23 and the second control interface 24. Controls renewable power such as PCS and controllable load.
  • the storage device 26 stores a control record of the power generation amount and output suppression amount of the renewable power source and the power consumption amount by the controllable load.
  • the voltage measurement unit 22 includes a sensor (not shown) for measuring the distribution voltage, and outputs the measurement result of the distribution voltage by the sensor to the processing device 25.
  • the first control interface 23 is a renewable power source, for example, measures the reverse power flow from the PCS or outputs an output suppression command to the PCS.
  • the second control interface 24 controls the power consumption by the controllable load.
  • the user interface 27 includes an input device (not shown) such as a keyboard and a mouse and an output device (not shown) such as a display device and a printing device, and is controlled by the power generation amount, output suppression amount, or controllable load of a renewable power source. It is used to input controllable load information indicating a history display of electric energy, control conditions permitting control of a renewable power source and controllable load, and the like.
  • FIG. 6 is a flowchart showing a processing procedure of the control apparatus shown in FIG.
  • control device 1 periodically collects the distribution voltage measured at each customer terminal 2 and the controllable load information set by the user (step S1).
  • control device 1 determines whether or not there is a node in which a voltage deviation has occurred (step S2).
  • the control device 1 refers to the distribution network information database, and Information for each customer connected to the pole transformer corresponding to the node and the pole transformer corresponding to the downstream node is acquired (step S3).
  • the control device 1 acquires information on the renewable power source and the controllable load included in the node where the voltage deviation has occurred and the customer connected to the downstream node, and controls the controllable load from these control target candidates. Is selected (step S4), and a load control command for increasing the power consumption of the controllable load is output to the customer terminal of the customer (step S5). In addition, when there are sufficiently many consumers permitting control of the controllable load, a load control command for increasing the power consumption with respect to the controllable load selected by the selection method described later may be output.
  • control device 1 extracts a renewable power source that is a candidate for control, and an output suppression command for suppressing a required power generation amount for the renewable power source selected by the selection method described later among the candidates. Is output (step S6).
  • control device 1 When the control device 1 outputs the load control command and the output suppression command, the control device 1 records the load control command for each controllable load and the output suppression command for each renewable power source in the control record database (step S7). The measured value of the distribution voltage by the terminal is acquired, and the above processing is repeated until there are no nodes where voltage deviation has occurred.
  • the manager of the power system refers to the control record database of the control device 1 and pays an incentive for each demand based on the amount of control power periodically, for example, once a month.
  • the distribution network information database may be changed because the configuration of the distribution network may be changed using section switches or interconnection switches in order to relieve accident distribution lines or distribution lines with large voltage drops. It is desirable to update each time the network configuration changes.
  • the following methods can be considered for selecting a controllable load that outputs a load control command and a renewable power source that outputs an output suppression command.
  • the renewable power source and the controllable load of each consumer it is preferable to control the renewable power source and the controllable load of each consumer as equally as possible.
  • the following two methods can be considered. (1) Referring to the control record database, select the power generation amount with the largest power generation amount and the smallest past output suppression allocation amount for renewable power sources, and the largest load capacity for controllable loads. Select the one that is large and has the smallest amount of past power consumption. (2) For a renewable power source, an output suppression amount proportional to the power generation capacity is assigned to all candidates, and for a controllable load, a power consumption proportional to the load capacity is assigned to all candidates.
  • the control power amount (the output suppression amount of the renewable power source and the control power amount) is controlled by controlling the output suppression and the controllable load in the entire node downstream from the node where the voltage deviation has occurred.
  • the total amount of power consumption by the controllable load is minimized.
  • the amount of power discarded without being used can be reduced.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

L'invention concerne un appareil de commande, système d'énergie et procédé de commande de celui-ci. Après détection du fait qu'une tension de distribution fournie par un système de distribution électrique s'est écartée d'une plage prédéterminée de tensions, on réduit les sorties d'un noeud auquel est connecté un consommateur sur lequel l'écart de la tension a été détecté ainsi que celles d'alimentations électriques renouvelables dont sont équipés des consommateurs connectés à des noeuds situés en aval du noeud ci-dessus. En outre, on augmente une consommation électrique de charges commandables dont sont équipés les consommateurs ci-dessus.
PCT/JP2010/067456 2009-10-21 2010-10-05 Appareil de commande, système d'énergie et procédé de commande de celui-ci Ceased WO2011048944A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011537199A JP5527325B2 (ja) 2009-10-21 2010-10-05 制御装置、エネルギーシステム及びその制御方法

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JP2009-242285 2009-10-21
JP2009242285 2009-10-21

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WO2011048944A1 true WO2011048944A1 (fr) 2011-04-28

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Cited By (9)

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JP2013192345A (ja) * 2012-03-13 2013-09-26 Osaka Gas Co Ltd 電圧制御システム
JP2016158347A (ja) * 2015-02-24 2016-09-01 株式会社日立製作所 送電設備計画支援システム及び方法
WO2016147456A1 (fr) * 2015-03-13 2016-09-22 日本電気株式会社 Système de commande de surveillance de dispositif de génération d'électricité, système d'alimentation électrique, dispositif de commande, dispositif de gestion, procédé et programme
WO2016157577A1 (fr) * 2015-04-03 2016-10-06 日本電気株式会社 Système de commande de surveillance de dispositifs de production d'énergie, système d'énergie électrique, dispositif de gestion, dispositif de commande, et procédé
WO2016157576A1 (fr) * 2015-03-31 2016-10-06 日本電気株式会社 Système de commande de surveillance de dispositif de production d'énergie, dispositif et procédé de commande
WO2016189756A1 (fr) * 2015-05-27 2016-12-01 日本電気株式会社 Dispositif de commande de génération d'énergie électrique, dispositif de commande, procédé de commande et support d'enregistrement
JP2017103881A (ja) * 2015-11-30 2017-06-08 株式会社東芝 消費電力制御装置および消費電力制御方法
JP2020141452A (ja) * 2019-02-27 2020-09-03 株式会社ダイヘン 電力管理装置
WO2021005675A1 (fr) * 2019-07-08 2021-01-14 東芝三菱電機産業システム株式会社 Procédé de commande de réglage d'équilibre d'énergie et dispositif de commande de réglage

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WO2016152665A1 (fr) * 2015-03-20 2016-09-29 日本電気株式会社 Dispositif de commande de génération de puissance, dispositif de génération de puissance, dispositif de commande, système de commande, procédé de commande et programme
JP2017046388A (ja) * 2015-08-25 2017-03-02 東芝ライテック株式会社 電力システム
JP6497664B2 (ja) 2015-12-28 2019-04-10 パナソニックＩｐマネジメント株式会社 情報端末、情報処理方法及び制御プログラム
US11309734B2 (en) * 2018-03-23 2022-04-19 Electricity North West Property Limited System for controlling power consumption on a distribution grid

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JP2002152976A (ja) * 2000-11-13 2002-05-24 Sharp Corp 分散電源電力供給システム
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013192345A (ja) * 2012-03-13 2013-09-26 Osaka Gas Co Ltd 電圧制御システム
JP2016158347A (ja) * 2015-02-24 2016-09-01 株式会社日立製作所 送電設備計画支援システム及び方法
JPWO2016147456A1 (ja) * 2015-03-13 2018-01-18 日本電気株式会社 発電装置監視制御システム、電力系統システム、制御装置、管理装置、方法及びプログラム
WO2016147456A1 (fr) * 2015-03-13 2016-09-22 日本電気株式会社 Système de commande de surveillance de dispositif de génération d'électricité, système d'alimentation électrique, dispositif de commande, dispositif de gestion, procédé et programme
JPWO2016157576A1 (ja) * 2015-03-31 2018-01-25 日本電気株式会社 発電装置監視制御システム、制御装置及び制御方法
WO2016157576A1 (fr) * 2015-03-31 2016-10-06 日本電気株式会社 Système de commande de surveillance de dispositif de production d'énergie, dispositif et procédé de commande
JPWO2016157577A1 (ja) * 2015-04-03 2018-01-25 日本電気株式会社 発電装置監視制御システム、電力系統システム、管理装置、制御装置及び方法
WO2016157577A1 (fr) * 2015-04-03 2016-10-06 日本電気株式会社 Système de commande de surveillance de dispositifs de production d'énergie, système d'énergie électrique, dispositif de gestion, dispositif de commande, et procédé
JPWO2016189756A1 (ja) * 2015-05-27 2017-06-15 日本電気株式会社 発電制御装置、制御装置、制御方法及びプログラム
WO2016189756A1 (fr) * 2015-05-27 2016-12-01 日本電気株式会社 Dispositif de commande de génération d'énergie électrique, dispositif de commande, procédé de commande et support d'enregistrement
JP2017103881A (ja) * 2015-11-30 2017-06-08 株式会社東芝 消費電力制御装置および消費電力制御方法
JP2020141452A (ja) * 2019-02-27 2020-09-03 株式会社ダイヘン 電力管理装置
JP7259183B2 (ja) 2019-02-27 2023-04-18 株式会社ダイヘン 電力管理装置
WO2021005675A1 (fr) * 2019-07-08 2021-01-14 東芝三菱電機産業システム株式会社 Procédé de commande de réglage d'équilibre d'énergie et dispositif de commande de réglage
JP6842814B1 (ja) * 2019-07-08 2021-03-17 東芝三菱電機産業システム株式会社 エネルギーバランス調整制御方法及び調整制御装置

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