JP4041829B2 - Control method of distributed power supply system and PLC master station apparatus used therefor - Google Patents

Control method of distributed power supply system and PLC master station apparatus used therefor Download PDF

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JP4041829B2
JP4041829B2 JP2006002917A JP2006002917A JP4041829B2 JP 4041829 B2 JP4041829 B2 JP 4041829B2 JP 2006002917 A JP2006002917 A JP 2006002917A JP 2006002917 A JP2006002917 A JP 2006002917A JP 4041829 B2 JP4041829 B2 JP 4041829B2
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distributed power
station device
plc
master station
information processing
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JP2007185079A (en
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保憲 武内
弘典 ▲角▼井
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Chugoku Electric Power Co Inc
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70Smart grids as climate change mitigation technology in the energy generation sector
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/7815
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16Electric power substations
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

Description

本発明は、分散型電源システムの制御方法及びこれに用いるPLC親局装置に関し、とくに商用電力系統又は分散型電源の電力の供給状態を確実かつ迅速に検知し、分散型電源を適切に制御するための技術に関する。   The present invention relates to a control method for a distributed power supply system and a PLC master station device used therefor, and in particular, reliably and promptly detects a power supply state of a commercial power system or a distributed power supply, and appropriately controls the distributed power supply. For technology.

近年、環境負荷の軽減や効率的なエネルギー利用等を目的として、マイクロガスタービンやガスエンジン、ディーゼルエンジン等を用いたコージェネレーション設備、太陽光発電システム、風力発電システム、燃料電池システムなどの需要家側に設置された発電設備を、商用電力系統に連系させて用いる、いわゆる分散型電源システムの導入が進んでいる。   In recent years, consumers such as micro gas turbines, gas engines, diesel engines, etc., cogeneration facilities, solar power generation systems, wind power generation systems, fuel cell systems, etc. for the purpose of reducing environmental impact and efficient energy use. The introduction of so-called distributed power systems, in which the power generation equipment installed on the side is connected to a commercial power system, is in progress.

このような分散型電源システムとして、例えば、特許文献1には、発電設備(以下、分散型電源という。)からの運転状態信号や配電線管理用コンピュータからの解列指令を通信回線に送出し、メーカ側サービス用コンピュータが分散型電源からの運転状態信号に基づいて分散型電源の異常判定を行い、分散型電源が配電線管理用コンピュータから解列指示を受信することにより、分散型電源を通信回線を介してメーカ側サービス用コンピュータや配電線管理用コンピュータによって監視し制御することが開示されている。   As such a distributed power supply system, for example, in Patent Document 1, an operation state signal from a power generation facility (hereinafter referred to as a distributed power supply) and a disconnection command from a distribution line management computer are sent to a communication line. The manufacturer-side service computer determines the distributed power source abnormality based on the operation status signal from the distributed power source, and the distributed power source receives the disconnection instruction from the distribution line management computer. It is disclosed that monitoring and control are performed by a manufacturer service computer and a distribution line management computer via a communication line.

また特許文献2には、分散型電源の逆変換装置(インバータ)の系統側にインバータの内部コンタクト等からなり第1の解列点を形成する第1の解列用開閉器と、第2の解列点を形成する第2の解列用開閉器とを直列に設け、共通の制御装置に系統異常時の各分散電源の単独運転を検出することにより、各分散型電源に開閉器の解放指令を伝送することが開示されている。   Further, Patent Document 2 discloses a first disconnecting switch formed of an internal contact of an inverter or the like on the system side of an inverter (inverter) of a distributed power source, and forming a first disconnecting point; A second switch for disconnecting that forms a disconnection point is provided in series, and the common controller detects the independent operation of each distributed power source when a system abnormality occurs, thereby releasing the switch to each distributed power source. Transmitting a command is disclosed.

特許文献3には、系統に次数間高調波を供給して系統供給の停止に伴う系統の次数間高調波の電気量変化から分散型電源の単独運転を検出する分散型電源の運転監視装置であって、分散型電源の運転状態にしたがって次数間高調波の系統への供給を変化させ、系統の次数間高調波の変化から分散型電源の運転状態を検出することが開示されている。   Patent Document 3 discloses an operation monitoring device for a distributed power source that supplies interharmonic harmonics to a system and detects isolated operation of the distributed power source from a change in the electrical quantity of the interharmonic harmonics of the system when the supply of the system is stopped. Therefore, it is disclosed that the supply of inter-order harmonics to the system is changed in accordance with the operating state of the distributed power source, and the operating state of the distributed power source is detected from the change in inter-order harmonics of the system.

一方、特許文献4には、変圧器の高圧側と低圧側のそれぞれに電源監視装置を設け、変圧器のまわりの諸電気量を計測・計量するとともに、それぞれの電源監視装置をカスケードにして電力線搬送により上位装置と通信を行うことが開示されている。
特開平11−89093号公報 特開平2000−358330号公報 特開平2001−298865号公報 特開平2001−264356号公報
On the other hand, in Patent Document 4, a power supply monitoring device is provided on each of the high voltage side and the low voltage side of the transformer to measure and measure various amounts of electricity around the transformer, and each power supply monitoring device is cascaded to form a power line. It is disclosed that communication is performed with a host device by conveyance.
JP 11-89093 A JP 2000-358330 A Japanese Patent Laid-Open No. 2001-298865 JP 2001-264356 A

ところで、需要家側に設置される分散型電源に連系される商用電力系統からの電力の供給状態は、分散型電源システムの運転に密接に影響する。例えば、商用電力系統に異常が生じた場合には、分散型電源による自立運転への切り換えを速やかに行う必要がある。また分散型電源の出力端の状態等、分散型電源自身の稼働状態に応じた制御も必要となる。このように、分散型電源システムにおいては、商用電力系統又は分散型電源の電力の供給状態を迅速かつ確実に検知し、分散型電源を適切に制御するための仕組みが必要である。   By the way, the supply state of power from the commercial power system linked to the distributed power source installed on the consumer side closely affects the operation of the distributed power system. For example, when an abnormality occurs in the commercial power system, it is necessary to quickly switch to the independent operation by the distributed power source. Also, control according to the operating state of the distributed power source itself, such as the state of the output terminal of the distributed power source, is required. As described above, in the distributed power system, a mechanism for quickly and reliably detecting the power supply state of the commercial power system or the distributed power source and appropriately controlling the distributed power source is required.

本発明はこのような背景に鑑みてなされたもので、商用電力系統又は分散型電源の電力の供給状態を確実かつ迅速に検知し、分散型電源を適切に制御することが可能な分散型電源システムの制御方法及び分散型電源の制御システムを提供することを目的とする。   The present invention has been made in view of such a background. A distributed power source capable of reliably and quickly detecting the power supply state of a commercial power system or a distributed power source and appropriately controlling the distributed power source. It is an object of the present invention to provide a system control method and a distributed power supply control system.

上記目的を達成するための本発明の請求項1にかかる発明は、高圧配電線を介して供給される高電圧を低電圧に変換する変圧器と、前記変圧器から出力される低電圧を需要家側に引き込む低圧配電線と、前記変圧器に併設されるPLC親局装置と、前記PLC親局装置に設けられ、前記変圧器の前記高圧配電線側/前記低圧配電線側の電圧又は電流、前記変圧器の所定部位の温度のうちの少なくともいずれかの計測値を取得する回路と、前記低圧配電線に接続され、前記需要家における負荷に電力を供給する分散型電源と、前記需要家側に設置され、前記低圧配電線を介して前記PLC親局装置と電力線通信を行い、前記分散型電源を制御するPLC子局装置と、電力会社と前記需要家とを結ぶ通信線を介して前記PLC親局装置と通信可能に接続する情報処理装置と、を含んで構成される前記分散型電源システムの制御方法であって、前記PLC親局装置が、前記回路により取得された前記計測値を前記情報処理装置に通知するステップと、前記情報処理装置が、前記PLC親局装置を介して行われる前記通信線及び前記電力線通信による通信により前記PLC子局装置と通信することにより、前記計測値に応じて前記分散型電源を制御するステップと、前記PLC親局装置が、前記PLC子局装置と通信することにより前記計測値に応じて前記分散型電源を制御するステップと、を含むこととする。   In order to achieve the above object, the invention according to claim 1 of the present invention demands a transformer for converting a high voltage supplied via a high-voltage distribution line into a low voltage, and a low voltage output from the transformer. A low-voltage distribution line drawn into the house side, a PLC master station device attached to the transformer, and a voltage or current on the high-voltage distribution line side / low-voltage distribution line side of the transformer provided in the PLC master station device A circuit for obtaining a measured value of at least one of the temperatures of a predetermined part of the transformer, a distributed power source connected to the low-voltage distribution line and supplying power to a load in the consumer, and the consumer Via a communication line connecting the power company and the consumer, and a PLC slave station device that controls the distributed power source, and performs power line communication with the PLC master station device via the low-voltage distribution line. Can communicate with the PLC master station A method of controlling the distributed power supply system including an information processing device to be connected, wherein the PLC master station device notifies the information processing device of the measurement value acquired by the circuit And the information processing device communicates with the PLC slave station device by communication using the communication line and the power line communication performed via the PLC master station device, thereby reducing the distributed power source according to the measured value. And controlling the distributed power source in accordance with the measured value by the PLC master station device communicating with the PLC slave station device.

本発明によれば、変圧器の前記高圧配電線側/前記低圧配電線側の電圧又は電流、前記変圧器の所定部位の温度のうちの少なくともいずれかの計測値に基づいて、分散型電源を適切に制御することができる。また本発明によれば、PLC親局装置によって取得される上記計測値に基づいて、需要家側に設置された分散型電源を、情報処理装置又はPLC親局装置のいずれによっても制御することが可能である。さらに本発明は、分散型電源を需要家における電力線通信のために変圧器に併設されるPLC親局装置によって制御する構成であるので容易かつ低コストで実施することができる。   According to the present invention, based on the measured value of at least one of the voltage or current on the high-voltage distribution line side / low-voltage distribution line side of the transformer and the temperature of the predetermined part of the transformer, the distributed power source is It can be controlled appropriately. Moreover, according to this invention, based on the said measured value acquired by PLC master station apparatus, the distributed power supply installed in the consumer side can be controlled by either information processing apparatus or PLC master station apparatus. Is possible. Furthermore, the present invention can be implemented easily and at low cost because the distributed power source is controlled by a PLC master station device provided in the transformer for power line communication at the consumer.

本発明の請求項2にかかる発明は、請求項1に記載の分散型電源システムの制御方法であって、前記PLC親局装置が、前記PLC子局装置と通信することにより前記計測値に応じて前記分散型電源を制御する前記ステップは、前記PLC親局装置が、前記情報処理装置が前記PLC子局装置と通信できないことを検知した場合に行われることとする。
本発明によれば、PLC親局装置と情報処理装置との間で通信ができない場合であっても、PLC親局装置によって上記計測値に基づいて分散型電源を適切に制御することができる。
The invention according to claim 2 of the present invention is the distributed power supply system control method according to claim 1, wherein the PLC master station device responds to the measurement value by communicating with the PLC slave station device. The step of controlling the distributed power source is performed when the PLC master station apparatus detects that the information processing apparatus cannot communicate with the PLC slave station apparatus.
According to the present invention, even when communication is not possible between the PLC master station device and the information processing device, the distributed power source can be appropriately controlled by the PLC master station device based on the measurement value.

本発明の請求項3にかかる発明は、請求項1に記載の分散型電源システムの制御方法であって、前記PLC子局装置が、前記分散型電源の稼働状態を前記情報処理装置に通知するステップと、前記情報処理装置が、前記PLC親局装置を介して行われる前記通信線及び前記電力線通信による通信によって前記PLC子局装置と通信することにより、前記稼働状態に応じて前記分散型電源を制御するステップと、前記PLC親局装置が、前記PLC子局装置と通信することにより前記稼働状態に応じて前記分散型電源を制御するステップと、を含むこととする。
本発明によれば、分散型電源自身の稼働状態に基づいて分散型電源を適切に制御することにより電力系統の電圧等を調整することができる。また本発明によれば、分散型電源自身の稼働状態に基づいて、情報処理装置又はPLC親局装置のいずれによっても分散型電源を制御することが可能である。さらに需要家における電力線通信のために変圧器に併設されるPLC親局装置によって分散型電源を制御するため、本発明は容易かつ低コストで実施することが可能である。
The invention according to claim 3 of the present invention is the distributed power supply system control method according to claim 1, wherein the PLC slave station device notifies the information processing device of an operating state of the distributed power supply. And the information processing device communicates with the PLC slave station device by communication using the communication line and the power line communication performed via the PLC master station device, so that the distributed power source is set according to the operating state. And a step in which the PLC master station device controls the distributed power source according to the operating state by communicating with the PLC slave station device.
ADVANTAGE OF THE INVENTION According to this invention, the voltage etc. of an electric power grid | system can be adjusted by controlling a distributed power supply appropriately based on the operating state of distributed power supply itself. Further, according to the present invention, the distributed power source can be controlled by either the information processing device or the PLC master station device based on the operating state of the distributed power source itself. Further, since the distributed power source is controlled by the PLC master station device provided in the transformer for power line communication at the consumer, the present invention can be implemented easily and at low cost.

本発明の請求項4にかかる発明は、請求項3に記載の分散型電源システムの制御方法であって、前記PLC親局装置が、前記PLC子局装置と通信することにより前記稼働状態に応じて前記分散型電源を制御する前記ステップは、前記PLC親局装置が、前記情報処理装置が前記PLC子局装置と通信できないことを検知した場合に行われることとする。
本発明によれば、PLC親局装置と情報処理装置との間で通信ができない場合であっても、PLC親局装置によって変圧器の稼働状態に基づいて分散型電源を適切に制御することができる。
The invention according to claim 4 of the present invention is the distributed power supply system control method according to claim 3, wherein the PLC master station device communicates with the PLC slave station device according to the operating state. The step of controlling the distributed power source is performed when the PLC master station apparatus detects that the information processing apparatus cannot communicate with the PLC slave station apparatus.
According to the present invention, even when communication is not possible between the PLC master station device and the information processing device, the PLC master station device can appropriately control the distributed power source based on the operating state of the transformer. it can.

本発明の請求項5にかかる発明は、請求項3に記載の分散型電源システムの制御方法であって、前記稼働状態は、前記分散型電源の出力端の電圧値、電流値、周波数、単独運転時における逆潮流の有無のうちの少なくともいずれかであることとする。   The invention according to claim 5 of the present invention is the distributed power supply system control method according to claim 3, wherein the operating state is a voltage value, a current value, a frequency of the output terminal of the distributed power supply, or an independent state. It shall be at least one of the presence or absence of reverse power flow during operation.

本発明の請求項6にかかる発明は、請求項1に記載の方法に用いられる前記PLC親局装置であって、前記変圧器の前記高圧配電線側の電圧又は電流、前記低圧配電線側の電圧又は電流、及び前記変圧器の所定部位の温度のうちの少なくともいずれかの計測値を取得する回路と、前記情報処理装置と通信する機能と、前記回路により取得された前記計測値を前記情報処理装置に通知する機能と、電力線通信により前記PLC子局装置と通信する機能と、前記計測値に応じて前記分散型電源を制御する機能と、を有することとする。   The invention according to claim 6 of the present invention is the PLC master station device used in the method according to claim 1, wherein the voltage or current on the high-voltage distribution line side of the transformer, the low-voltage distribution line side A circuit that acquires a measured value of at least one of a voltage or current and a temperature of a predetermined part of the transformer, a function that communicates with the information processing device, and the measured value acquired by the circuit A function of notifying the processing device, a function of communicating with the PLC slave station device by power line communication, and a function of controlling the distributed power source according to the measurement value are provided.

本発明の請求項7にかかる発明は、請求項2に記載の方法に用いられる前記PLC親局装置であって、前記情報処理装置が前記PLC子局装置と通信できないことを検知する機能と、前記情報処理装置が前記PLC子局装置と通信できないことを検知した場合に、前記PLC子局装置と通信することにより前記計測値に応じて前記分散型電源の制御を開始する機能と、を有することとする。   The invention according to claim 7 of the present invention is the PLC master station device used in the method according to claim 2, wherein the information processing device detects that communication with the PLC slave station device cannot be performed; A function of starting control of the distributed power source according to the measured value by communicating with the PLC slave station device when the information processing device detects that it cannot communicate with the PLC slave station device; I will do it.

本発明の請求項8にかかる発明は、請求項3に記載の方法に用いられる前記PLC親局装置であって、前記PLC子局装置と通信することにより前記稼働状態に応じて前記分散型電源を制御する機能を有することとする。   The invention according to claim 8 of the present invention is the PLC master station device used in the method according to claim 3, wherein the distributed power source is communicated with the PLC slave station device according to the operating state. It has a function to control.

本発明の請求項9にかかる発明は、請求項4に記載の方法に用いられる前記PLC親局装置であって、前記情報処理装置が前記PLC子局装置と通信できないことを検知する機能と、前記情報処理装置が前記PLC子局装置と通信できないことを検知した場合に、前記PLC子局装置と通信することにより前記稼働状態に応じて前記分散型電源の制御を開始する機能と、を有することとする。   The invention according to claim 9 of the present invention is the PLC master station device used in the method according to claim 4, wherein the information processing device detects that communication with the PLC slave station device cannot be performed, A function of starting control of the distributed power source according to the operating state by communicating with the PLC slave station device when detecting that the information processing device cannot communicate with the PLC slave station device; I will do it.

本発明によれば、商用電力系統又は分散型電源の電力の供給状態や需要家側の負荷の状態等を確実かつ迅速に検知し、分散型電源の運転を適切に制御することが可能となる。   ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to detect the supply state of the electric power of a commercial power system or a distributed power supply, the state of the load of a customer side, etc. reliably and rapidly, and to control the operation | movement of a distributed power supply appropriately. .

==概略構成==
図1に本発明の一実施形態として説明する分散型電源制御システム1の構成を示している。同図に示すように、需要家10側には、変電所2、柱上変圧器3、変電所2と柱上変圧器3とを結ぶ三相3線式(6.6kV)の高圧配電線4、及び単相3線式(100V/200V)の低圧配電線5(引込線)を含んで構成される商用電源系統を通じて商用電力が供給されている。需要家10側の建屋内等に引き込まれる低圧配電線5には、商用電源系統又は分散型電源11により供給される電力によって駆動される、少なくとも一台以上の負荷12が接続している。
== General configuration ==
FIG. 1 shows a configuration of a distributed power control system 1 described as an embodiment of the present invention. As shown in the figure, on the customer 10 side, there is a substation 2, a pole transformer 3, and a three-phase three-wire (6.6 kV) high-voltage distribution line connecting the substation 2 and the pole transformer 3. 4, and commercial power is supplied through a commercial power supply system including a single-phase three-wire (100V / 200V) low-voltage distribution line 5 (intake line). At least one or more loads 12 driven by power supplied from a commercial power supply system or a distributed power supply 11 are connected to the low-voltage distribution line 5 drawn into the building on the customer 10 side or the like.

柱上変圧器3の近傍には、変電所2に設置されている遠方監視制御装置の子局(以下、遠制子局21という。)と通信線6を介して通信可能に接続され、通信線6を介して遠制子局21によって制御される柱上開閉器31が設けられている。なお、通信線6は、例えば高圧配電線4とともに電柱に併設される光ファイバの通信線である。遠制子局21は、電力会社の営業所や制御所など(以下、営業所等7という。)において稼働している、遠方監視制御装置の親局(以下、遠制親局713という。)と通信線6を介して通信可能に接続している。なお、遠制親局713は、営業所等7において稼働する後述する配電自動化システム71によって制御される。   Near the pole transformer 3 is connected to a remote station (hereinafter referred to as a remote control station 21) of a remote monitoring and control device installed in the substation 2 through a communication line 6 so that communication is possible. A pole switch 31 controlled by the remote control station 21 via the line 6 is provided. The communication line 6 is, for example, an optical fiber communication line that is provided alongside the utility pole together with the high-voltage distribution line 4. The remote control station 21 is a master station of a remote monitoring control device (hereinafter referred to as a remote control station 713) operating in a business office or control office of an electric power company (hereinafter referred to as a sales office 7). The communication line 6 is communicably connected. The remote control master station 713 is controlled by a power distribution automation system 71 (described later) operating in the sales office 7.

柱上変圧器3には、電力線通信(PLC:Power Line Communication)を行うためのPLCモデムを内蔵したPLC装置(以下、PLC親局装置32という。)が併設されている。PLC親局装置32は、通信線8を介して配電自動化システム71に通信可能に接続している。なお、通信線8は、例えば高圧配電線4とともに電柱に併設される光ファイバの通信線である。   The pole transformer 3 is provided with a PLC device (hereinafter referred to as a “PLC master station device 32”) having a built-in PLC modem for performing power line communication (PLC). The PLC master station device 32 is communicably connected to the power distribution automation system 71 via the communication line 8. The communication line 8 is, for example, an optical fiber communication line provided alongside the utility pole along with the high-voltage distribution line 4.

需要家10側に設置される分散型電源11は、マイクロガスタービンやガスエンジン、ディーゼルエンジン等を用いたコージェネレーション設備、太陽光発電システム、風力発電システム、燃料電池システム、水力発電機、ゴミ焼却発電機等である。分散型電源11によって発電された電力は、低圧配電線5に供給されている。なお、図1にはとくに示していないが、分散型電源11は、逆変換装置(インバータ)、商用電源系統との連系に必要な保護継電器、単独運転検出装置、逆充電検出装置、解列用遮断装置、連系用遮断器を制御する転送遮断装置、分散型電源11の出力端の電圧を所定の値に自動制御する自動電圧調整装置、電流瞬時値を差動演算することにより自己判定を行う継電器、自動負荷遮断装置、保安通信用電話設備、営業所等との間を結ぶIPフォン等の専用回線電話、電圧/電流/電力等の計測値を配電自動化システム71に伝送するテレメータ等の、一般的な分散型電源11が備える装置の全部又は一部を備えている。   The distributed power source 11 installed on the customer 10 side is a cogeneration facility using a micro gas turbine, a gas engine, a diesel engine, a solar power generation system, a wind power generation system, a fuel cell system, a hydroelectric generator, a garbage incineration Such as a generator. The electric power generated by the distributed power source 11 is supplied to the low voltage distribution line 5. Although not specifically shown in FIG. 1, the distributed power source 11 includes an inverse conversion device (inverter), a protective relay necessary for interconnection with a commercial power supply system, an isolated operation detection device, a reverse charge detection device, and a disconnection. Circuit breaker, transfer circuit breaker for controlling the interconnection breaker, automatic voltage regulator for automatically controlling the voltage at the output terminal of the distributed power source 11 to a predetermined value, self-judgment by differential calculation of instantaneous current value Relays, automatic load shut-off devices, telephone facilities for security communications, private line telephones such as IP phones that connect with sales offices, telemeters that transmit measured values such as voltage / current / power to the distribution automation system 71, etc. The general distributed power supply 11 includes all or part of the device.

需要家10側に引き込まれている低圧配電線5には、PLC親局装置32との間で低圧配電線5を介して電力線通信(PLC)を行うためのPLCモデムを内蔵した装置(以下、PLC子局装置13という。)が接続している。なお、PLC子局装置13は、PLC親局装置32を経由して配電自動化システム71との間で直接通信することもできる。すなわち、LAN711、通信線8、及び低圧配電線5を含んで構成される通信ネットワークは、通信プロトコルとしてTCP/IPを用いており、PLC親局装置32、PLC子局装置13には、ネットワークアドレスとしてIPアドレスが付与されている。つまり、情報処理装置712、親局装置713、柱上開閉器31、PLC親局装置32、PLC子局装置13等は、上記通信ネットワークにおいてIPアドレスを用いて特定することができ、これらはいずれも相手方を特定して直接通信することができる。   The low-voltage distribution line 5 drawn to the customer 10 side includes a device (hereinafter, referred to as a PLC modem) for performing power line communication (PLC) with the PLC master station device 32 via the low-voltage distribution line 5. PLC slave station device 13) is connected. Note that the PLC slave station device 13 can also communicate directly with the distribution automation system 71 via the PLC master station device 32. That is, the communication network including the LAN 711, the communication line 8, and the low-voltage distribution line 5 uses TCP / IP as a communication protocol, and the PLC master station device 32 and the PLC slave station device 13 have a network address. As an IP address. That is, the information processing device 712, the master station device 713, the pole switch 31, the PLC master station device 32, the PLC slave station device 13 and the like can be specified using the IP address in the communication network. Can also communicate directly with the other party.

PLC子局装置13は、RS−232C、USB、Ethernet(登録商標)等の所定の通信線を介して分散型電源11とも通信可能に接続している。この通信によって、PLC子局装置13は分散型電源11の制御や分散型電源11からの稼働状態信号の取得などを行うことができる。   The PLC slave station device 13 is also communicably connected to the distributed power source 11 via a predetermined communication line such as RS-232C, USB, Ethernet (registered trademark). Through this communication, the PLC slave station device 13 can control the distributed power source 11 and obtain an operation state signal from the distributed power source 11.

図2に営業所等7において稼働する配電自動化システム71の一例を示している。同図に示すように、配電自動化システム71は、LAN(Local Area Network)711を介して通信可能に接続される、情報処理装置712、遠制親局713、遠制親局713を通信線6に接続するメディアコンバータ714、及びLAN711を通信線8に接続するメディアコンバータ715を含んで構成されている。   FIG. 2 shows an example of a power distribution automation system 71 operating in a sales office 7 or the like. As shown in the figure, the distribution automation system 71 includes an information processing device 712, a remote control master station 713, and a remote control master station 713 that are communicably connected via a LAN (Local Area Network) 711. And a media converter 715 for connecting the LAN 711 to the communication line 8.

図2に示す配電自動化システム71の構成要素のうち、情報処理装置712は、汎用機やパーソナルコンピュータ等のコンピュータである。情報処理装置712はCPU、メモリ、ハードディスク等の外部記憶装置、LAN711に接続するための通信インタフェースを備える。遠制親局713は、メディアコンバータ714、通信線6を介して各地に設置されている遠制子局21と通信し、商用電源系統における柱上開閉器31等の各種配電設備に関する情報収集や、配電設備の遠隔制御を行う。   Among the components of the distribution automation system 71 shown in FIG. 2, the information processing device 712 is a computer such as a general-purpose machine or a personal computer. The information processing apparatus 712 includes a CPU, an external storage device such as a memory and a hard disk, and a communication interface for connecting to the LAN 711. The remote control master station 713 communicates with the remote control stations 21 installed in various places through the media converter 714 and the communication line 6 to collect information on various power distribution facilities such as the pole switch 31 in the commercial power system. Remote control of distribution facilities.

情報処理装置712では、配電設備の監視や制御を行うプログラムが動作しており、情報処理装置712は遠制親局713に対して配電設備の制御のための指示を行う。情報処理装置712では、配電設備の監視や制御に必要となる情報が格納された設備情報データベース7121が稼働している。また情報処理装置712では分散型電源11の監視や制御を行うプログラムが動作しており、情報処理装置712は、上述した遠制親局713の制御のほか、分散型電源11の監視や制御を行う。この制御において、情報処理装置712は、メディアコンバータ715、通信線8、PLC親局装置32、低圧配電線5を介してPLC子局装置13と通信する。また情報処理装置712では、分散型電源11ごとの監視や制御に必要となる情報が格納された分散型電源データベース7122が稼働している。   In the information processing apparatus 712, a program for monitoring and controlling the distribution facility is operating, and the information processing apparatus 712 instructs the remote control station 713 to control the distribution facility. In the information processing device 712, a facility information database 7121 storing information necessary for monitoring and controlling the distribution facility is operating. The information processing device 712 operates a program for monitoring and controlling the distributed power source 11. The information processing device 712 monitors and controls the distributed power source 11 in addition to the control of the remote control station 713 described above. Do. In this control, the information processing device 712 communicates with the PLC slave station device 13 via the media converter 715, the communication line 8, the PLC master station device 32, and the low voltage distribution line 5. In the information processing apparatus 712, a distributed power source database 7122 storing information necessary for monitoring and control for each distributed power source 11 is operating.

図3にPLC親局装置32の構成を示している。同図に示すように、PLC親局装置32は、CPU321、メモリ322、第1通信インタフェース323、通信線8に接続するためのメディアコンバータ324、第2通信インタフェース325、商用電力の周波数帯域をカットするとともに電力線通信のための信号の周波数帯域は通過させるフィルタ回路326、低圧配電線5に電力線通信の信号を注入するカプラ回路327、アナログ信号をデジタル信号に変換するA/Dコンバータ328、及び低圧配電線5から供給される電力に基づいてPLC親局装置32の各部に駆動電力を生成/供給する電源回路329を含んで構成されている。なお、以上の構成のうち、CPU321、メモリ322、第1通信インタフェース323、第2通信インタフェース325、及びA/Dコンバータ328は、バス330を介して互いに通信可能に接続している。   FIG. 3 shows the configuration of the PLC master station device 32. As shown in the figure, the PLC master station device 32 cuts the frequency band of the CPU 321, the memory 322, the first communication interface 323, the media converter 324 for connecting to the communication line 8, the second communication interface 325, and the commercial power. In addition, a filter circuit 326 that allows a frequency band of a signal for power line communication to pass through, a coupler circuit 327 that injects a signal of power line communication into the low voltage distribution line 5, an A / D converter 328 that converts an analog signal into a digital signal, and a low voltage The power supply circuit 329 is configured to generate / supply drive power to each part of the PLC master station device 32 based on the power supplied from the distribution line 5. In the above configuration, the CPU 321, the memory 322, the first communication interface 323, the second communication interface 325, and the A / D converter 328 are communicably connected to each other via the bus 330.

PLC親局装置32の上記構成要素のうち、CPU321は、メモリ322に格納されているプログラムを読み出して実行することにより、PLC親局装置32が提供する各種の機能を実現する。メモリ322は、RAM/ROM及びフラッシュメモリ等の不揮発性メモリを含む。メモリ322にはPLC親局装置32の機能を実現するために必要となるプログラムやデータが格納される。第1通信インタフェース323は、メディアコンバータ324、及び通信線8を介して配電自動化システム71と通信するために必要となる、プロトコル変換等の処理を行う回路である。第2通信インタフェース325は、フィルタ回路326及びカプラ回路327を介して低圧配電線5を利用した電力線通信を行うために必要となる、プロトコル変換等の処理を行う回路である。   Of the above-described components of the PLC master station device 32, the CPU 321 implements various functions provided by the PLC master station device 32 by reading and executing a program stored in the memory 322. The memory 322 includes a nonvolatile memory such as a RAM / ROM and a flash memory. The memory 322 stores programs and data necessary for realizing the functions of the PLC master station device 32. The first communication interface 323 is a circuit that performs processing such as protocol conversion necessary for communication with the distribution automation system 71 via the media converter 324 and the communication line 8. The second communication interface 325 is a circuit that performs processing such as protocol conversion necessary for performing power line communication using the low-voltage distribution line 5 via the filter circuit 326 and the coupler circuit 327.

柱上変圧器3には、柱上変圧器3の高圧配電線4側及び低圧配電線5側の電圧を測定するための電圧計341、柱上変圧器3の高圧配電線4側及び低圧配電線5側の電流を測定するための電流計342、及び柱上変圧器3の筐体側面等の所定部位の温度を測定するための温度計343が取り付けてある。A/Dコンバータ328は、電圧計341、電流計342、及び温度計343から出力されるアナログの計測信号をデジタル信号に変換し、バス330に供給する回路である。CPU321は、A/Dコンバータ328から入力される上記デジタル信号を、所定フォーマットのデータ(以下、計測値という。)としてメモリ322に格納する。なお、計測値のメモリ322への格納は、随時、もしくは、リアルタイムに行われる。   The pole transformer 3 includes a voltmeter 341 for measuring voltages on the high voltage distribution line 4 side and the low voltage distribution line 5 side of the pole transformer 3, and the high voltage distribution line 4 side and the low voltage distribution on the pole transformer 3. An ammeter 342 for measuring the electric current on the electric wire 5 side and a thermometer 343 for measuring the temperature of a predetermined part such as the side of the casing of the pole transformer 3 are attached. The A / D converter 328 is a circuit that converts analog measurement signals output from the voltmeter 341, the ammeter 342, and the thermometer 343 into digital signals and supplies the digital signals to the bus 330. The CPU 321 stores the digital signal input from the A / D converter 328 in the memory 322 as data in a predetermined format (hereinafter referred to as a measured value). Measurement values are stored in the memory 322 at any time or in real time.

図4にPLC子局装置13の構成を示している。同図に示すように、PLC子局装置13は、CPU131、メモリ132、第1通信インタフェース133、商用電力の周波数帯域をカットするとともに電力線通信のための信号の周波数帯域は通過させるフィルタ回路134、低圧配電線5に電力線通信の信号を注入するカプラ回路135、分散型電源11に付設され分散型電源11の監視や制御を行っている制御装置111と通信するための第2通信インタフェース136、及び低圧配電線5から供給される電力に基づいてPLC子局装置13の各部に駆動電力を生成/供給する電源回路137を含んでいる。なお、以上の構成のうち、CPU131、メモリ132、第1通信インタフェース133、及び第2通信インタフェース136は、バス140を介して互いに通信可能に接続している。   FIG. 4 shows the configuration of the PLC slave station device 13. As shown in the figure, the PLC slave station device 13 includes a CPU 131, a memory 132, a first communication interface 133, a filter circuit 134 that cuts a frequency band of commercial power and passes a frequency band of a signal for power line communication, A coupler circuit 135 for injecting a power line communication signal to the low-voltage distribution line 5, a second communication interface 136 for communicating with a control device 111 attached to the distributed power source 11 and monitoring and controlling the distributed power source 11, and A power supply circuit 137 that generates / supplies drive power to each part of the PLC slave station device 13 based on the power supplied from the low-voltage distribution line 5 is included. In the above configuration, the CPU 131, the memory 132, the first communication interface 133, and the second communication interface 136 are connected to each other via the bus 140 so as to communicate with each other.

==機能説明==
次に、以上に説明した構成からなる分散型電源制御システム1の機能について説明する。PLC親局装置32は、メモリ322に格納されている計測値を、第1通信I/F323、メディアコンバータ324、及び通信線8を介して配電自動化システム71の情報処理装置712に随時送信する。情報処理装置712は、PLC親局装置32から送られてくる計測値を受信して、設備情報データベース7121に格納する。
== Functional explanation ==
Next, functions of the distributed power control system 1 having the above-described configuration will be described. The PLC master station device 32 transmits the measurement value stored in the memory 322 to the information processing device 712 of the power distribution automation system 71 via the first communication I / F 323, the media converter 324, and the communication line 8 as needed. The information processing device 712 receives the measurement value sent from the PLC master station device 32 and stores it in the facility information database 7121.

なお、情報処理装置712の設備情報データベース7121に格納された情報、すなわち、スポット的又は時系列的に記録された柱上変圧器3の高圧配電線4側又は低圧配電線5側の電圧、電流、及び温度は、情報処理装置712を利用する電力会社等において柱上変圧器3等の配電設備の有効かつ効率的利用に資することとなる。例えば、ある柱上変圧器3における電流値が平均的に低く、柱上変圧器3に余裕がある場合にその柱上変圧器3をより高負荷の箇所に移設したり、温度が平均的に高い柱上変圧器3については低負荷の箇所に移設するといった、配設設備の柔軟な運用を行うための情報として利用される。   The information stored in the facility information database 7121 of the information processing device 712, that is, the voltage and current on the high voltage distribution line 4 side or the low voltage distribution line 5 side of the pole transformer 3 recorded in a spot or time series. The temperature and temperature contribute to effective and efficient use of power distribution equipment such as the pole transformer 3 in an electric power company or the like that uses the information processing device 712. For example, when the current value in a certain pole transformer 3 is low on average and there is room in the pole transformer 3, the pole transformer 3 is moved to a higher load location, or the temperature is average. The high pole transformer 3 is used as information for flexible operation of the installation equipment such as relocation to a low load location.

<柱上開閉器31の制御>
配電自動化システム71の情報処理装置712は、PLC親局装置32から送られてくる計測値を監視しており、計測値に応じて柱上開閉器31の制御を行う。例えば、情報処理装置712は、高圧配電線4側又は低圧配電線5側の電圧値、電流値、又は柱上変圧器3の温度が所定の許容値を逸脱した場合、柱上開閉器31を制御して低圧配電線5への電力の供給を制限もしくは停止させる。また情報処理装置712は、設備情報データベース7121に格納される計測値の履歴に基づいて、計測値の時間的な変化を正常時のパターンと比較し、パターンからのずれが許容範囲から外れた場合は柱上開閉器31を制御して低圧配電線5への電力の供給を制限もしくは停止させる。
<Control of pole switch 31>
The information processing device 712 of the power distribution automation system 71 monitors the measured value sent from the PLC master station device 32 and controls the pole switch 31 according to the measured value. For example, when the voltage value, current value, or temperature of the pole transformer 3 on the high-voltage distribution line 4 side or the low-voltage distribution line 5 side deviates from a predetermined allowable value, the information processing device 712 switches the pole switch 31. The power supply to the low voltage distribution line 5 is controlled or stopped. In addition, the information processing device 712 compares the temporal change of the measurement value with the normal pattern based on the measurement value history stored in the facility information database 7121, and the deviation from the pattern is out of the allowable range. Controls the pole switch 31 to limit or stop the supply of power to the low voltage distribution line 5.

<柱上変圧器3の状態に応じた分散型電源11の制御>
情報処理装置712は、計測値に応じて分散型電源11の制御も行う。例えば、情報処理装置712は、柱上開閉器31を制御して低圧配電線5への商用電力の供給を停止した場合、商用電力の供給を停止した分の電力が分散型電源11から供給されるように通信線8、PLC親局装置32、及び低圧配電線5を通じて分散型電源11を制御する。また情報処理装置712は、必要な場合は商用電力の低圧配電線5への供給を停止させるとともに分散型電源11から低圧配電線5への電力供給も停止させる。
<Control of distributed power source 11 according to state of pole transformer 3>
The information processing device 712 also controls the distributed power source 11 according to the measurement value. For example, when the information processing device 712 controls the pole switch 31 to stop the supply of commercial power to the low-voltage distribution line 5, the power for stopping the supply of commercial power is supplied from the distributed power source 11. The distributed power source 11 is controlled through the communication line 8, the PLC master station device 32, and the low-voltage distribution line 5. Further, the information processing device 712 stops the supply of commercial power to the low-voltage distribution line 5 and also stops the power supply from the distributed power source 11 to the low-voltage distribution line 5 when necessary.

このように、情報処理装置712は、柱上変圧器3の状態に応じて柱上開閉器31や分散型電源11の状態を迅速に制御する。また分散型電源11の制御は、柱上変圧器3に併設されるPLC親局装置32とPLC子局装置13との間の電力線通信によって行われ、上記PLC親局装置32として需要家10において電力線通信が行われる場合に通常は柱上変圧器3に併設されるものを用いるため、柱上変圧器3の状態に応じて営業所等7から分散型電源11を制御する仕組みを容易かつ低コストで実現することができる。また柱上変圧器3の状態を検知することにより商用電力系統からの電力の供給状態を確実かつ迅速に検知することができるため、分散型電源11を適切に制御することができる。   Thus, the information processing device 712 quickly controls the state of the pole switch 31 and the distributed power source 11 according to the state of the pole transformer 3. The distributed power source 11 is controlled by power line communication between the PLC master station device 32 and the PLC slave station device 13 provided in the pole transformer 3. When power line communication is performed, the one that is usually provided alongside the pole transformer 3 is used. Therefore, a mechanism for controlling the distributed power source 11 from the sales office 7 or the like according to the state of the pole transformer 3 is easy and low. Can be realized at a cost. Moreover, since the supply state of the electric power from the commercial power system can be detected reliably and quickly by detecting the state of the pole transformer 3, the distributed power source 11 can be appropriately controlled.

<PLC親局装置32による分散型電源11の単独制御>
PLC親局装置32は、情報処理装置712からの指示によらずに単独で分散型電源11を制御する機能を備えている。すなわち、PLC親局装置32は、A/Dコンバータ328を介して受信した柱上変圧器3の電圧値や電流値、及び温度に基づいて、分散型電源11に対して上述した情報処理装置712によって行われる制御と同等の制御を行う。この際、PLC親局装置32は、情報処理装置712によって行われる上述の制御と同等の制御を行うために必要となる計測値の履歴をメモリ322に格納している。
<Single control of distributed power supply 11 by PLC master station device 32>
The PLC master station device 32 has a function of independently controlling the distributed power supply 11 without depending on an instruction from the information processing device 712. That is, the PLC master station device 32 uses the information processing device 712 described above for the distributed power source 11 based on the voltage value, current value, and temperature of the pole transformer 3 received via the A / D converter 328. Control equivalent to that performed by is performed. At this time, the PLC master station device 32 stores, in the memory 322, a history of measurement values necessary for performing control equivalent to the above-described control performed by the information processing device 712.

なお、PLC親局装置32が情報処理装置712からの指示によらずに単独で分散型電源11を制御する上記機能は、例えば、PLC親局装置32と情報処理装置712との間の通信に障害が発生し、情報処理装置712がPLC子局装置13と通信できなくなった場合に自動的に開始される。例えばPLC親局装置32と情報処理装置712との間の通信に障害が発生していない間は、PLC親局装置32は、情報処理装置712からの指示によって分散型電源11を制御するが、PLC親局装置32と情報処理装置712との間の通信に障害が発生した場合には、PLC親局装置32が単独で分散型電源11の制御を行う。このように、分散型電源制御システム1は、PLC親局装置32と情報処理装置712との間の通信に障害が発生している場合でも、分散型電源11を適切に制御することができる。   Note that the above-described function in which the PLC master station device 32 independently controls the distributed power source 11 without an instruction from the information processing device 712 is, for example, for communication between the PLC master station device 32 and the information processing device 712. This is automatically started when a failure occurs and the information processing device 712 becomes unable to communicate with the PLC slave station device 13. For example, while there is no failure in communication between the PLC master station device 32 and the information processing device 712, the PLC master station device 32 controls the distributed power supply 11 according to an instruction from the information processing device 712. When a failure occurs in communication between the PLC master station device 32 and the information processing device 712, the PLC master station device 32 controls the distributed power source 11 independently. As described above, the distributed power supply control system 1 can appropriately control the distributed power supply 11 even when a failure occurs in communication between the PLC master station device 32 and the information processing device 712.

<分散型電源11の稼働状態に応じた分散型電源11の制御>
情報処理装置712は、通信線8、PLC親局装置32、及び低圧配電線5を介してPLC子局装置13と直接通信することにより、分散型電源11の稼働状態を取得し、分散型電源情報データベース7122に格納する。そして、情報処理装置712は、取得した上記稼働状態に基づいて、通信線8、PLC親局装置32、及び低圧配電線5を介して分散型電源11を直接制御する。
<Control of distributed power source 11 according to operating state of distributed power source 11>
The information processing device 712 acquires the operating state of the distributed power supply 11 by directly communicating with the PLC slave station device 13 via the communication line 8, the PLC master station device 32, and the low-voltage distribution line 5. Store in the information database 7122. Then, the information processing device 712 directly controls the distributed power supply 11 via the communication line 8, the PLC master station device 32, and the low-voltage distribution line 5 based on the acquired operating state.

上記稼働状態は、例えば、分散型電源11の出力端の電圧値、電流値、周波数、単独運転時における逆潮流の有無等である。情報処理装置712は、分散型電源11の出力端の電圧値、電流値、周波数等が許容範囲を逸脱した場合や、単独運転時に逆潮流が発生したり逆充電が発生したことを検知すると、分散型電源11の出力を制限したり、分散型電源11の低圧配電線5から解列させるなどの制御を行う。また情報処理装置712は、分散型電源情報データベース7122に格納されている分散型電源11の出力端の電圧値、電流値、周波数等の時間的な変化を正常時のパターンと比較して、パターンからのずれが許容範囲外となった場合には、分散型電源11の出力を制限したり、分散型電源11の低圧配電線5から解列させるといった制御を行う。   The operating state is, for example, a voltage value, a current value, a frequency at the output end of the distributed power source 11, and the presence or absence of a reverse power flow during an independent operation. When the information processing device 712 detects that the voltage value, current value, frequency, or the like of the output terminal of the distributed power source 11 deviates from the allowable range, or that reverse power flow or reverse charging has occurred during single operation, Control such as limiting the output of the distributed power supply 11 or disconnecting from the low voltage distribution line 5 of the distributed power supply 11 is performed. The information processing device 712 compares the temporal change in the voltage value, current value, frequency, and the like at the output terminal of the distributed power source 11 stored in the distributed power source information database 7122 with the pattern at the normal time. When the deviation from the outside is outside the allowable range, control is performed such as limiting the output of the distributed power source 11 or disconnecting from the low voltage distribution line 5 of the distributed power source 11.

<PLC親局装置32による分散型電源11の単独制御>
PLC親局装置32は、情報処理装置712からの指示によらずに、分散型電源11の稼働状態に応じて単独で分散型電源11を制御する機能を有している。すなわち、PLC親局装置32は、分散型電源11の出力端の電圧値、電流値、周波数等の許容範囲の逸脱や単独運転時における逆潮流が発生、逆充電の発生等を検知すると、分散型電源11の出力制限、分散型電源11の解列等の制御を、情報処理装置712からの指示によらずに単独で行う。なお、この際、PLC親局装置32は、分散型電源情報データベース7122に格納されている履歴情報と同等の内容をメモリ322に格納している。
<Single control of distributed power supply 11 by PLC master station device 32>
The PLC master station device 32 has a function of independently controlling the distributed power source 11 in accordance with the operating state of the distributed power source 11 without depending on an instruction from the information processing device 712. That is, when the PLC master station device 32 detects a deviation from an allowable range such as a voltage value, a current value, and a frequency at the output terminal of the distributed power source 11, a reverse power flow during single operation, a reverse charge occurrence, etc. Control such as output limitation of the distributed power supply 11 and disconnection of the distributed power supply 11 is performed independently of instructions from the information processing device 712. At this time, the PLC master station device 32 stores the content equivalent to the history information stored in the distributed power supply information database 7122 in the memory 322.

本機能は、例えば、PLC親局装置32と情報処理装置712との間の通信に障害が発生し、情報処理装置712がPLC子局装置13と通信できなくなった場合に自動的に動作を開始する。このようにPLC親局装置32と情報処理装置712との間の通信に障害が発生している場合でも、分散型電源11の稼働状態に応じて分散型電源11を安全に制御することができる。   This function starts automatically when, for example, a failure occurs in communication between the PLC master station device 32 and the information processing device 712, and the information processing device 712 becomes unable to communicate with the PLC slave station device 13. To do. As described above, even when a failure occurs in communication between the PLC master station device 32 and the information processing device 712, the distributed power source 11 can be safely controlled according to the operating state of the distributed power source 11. .

なお、以上の説明は本発明の理解を容易にするためのものであり、本発明を限定するものではない。本発明はその趣旨を逸脱することなく変更、改良され得ると共に本発明にはその等価物が含まれることは勿論である。例えば、本実施形態の説明は、高圧配電線、特別高圧電線路、スポットネットワーク配電線等に連系する場合への本発明の適用を妨げない。   In addition, the above description is for making an understanding of this invention easy, and does not limit this invention. It goes without saying that the present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof. For example, the description of the present embodiment does not prevent the application of the present invention to a case where it is connected to a high voltage distribution line, a special high piezoelectric line, a spot network distribution line, or the like.

本発明の一実施形態として説明する分散型電源制御システム1の構成を示す図である。It is a figure which shows the structure of the distributed power supply control system 1 demonstrated as one Embodiment of this invention. 本発明の一実施形態として説明する営業所等7において稼働する配電自動化システム71の一例を示す図である。It is a figure which shows an example of the power distribution automation system 71 which operates in the sales office etc. 7 demonstrated as one Embodiment of this invention. 本発明の一実施形態として説明するPLC親局装置32の構成を示す図である。It is a figure which shows the structure of the PLC master station apparatus 32 demonstrated as one Embodiment of this invention. 本発明の一実施形態として説明するPLC子局装置13の構成を示す図である。It is a figure which shows the structure of the PLC subunit | mobile_unit apparatus 13 demonstrated as one Embodiment of this invention.

符号の説明Explanation of symbols

1 分散型電源制御システム、2 変電所、3 柱上変圧器、
4 高圧配電線、5 低圧配電線、6 通信線、8 通信線、
10 需要家、11 分散型電源、12 負荷、13 PLC子局装置、
32 PLC親局装置、71 配電自動化システム、
711 LAN、712 情報処理装置、
341 電圧計、342 電流計、343 温度計
1 Distributed power control system, 2 substation, 3 pole transformer,
4 High voltage distribution line, 5 Low voltage distribution line, 6 Communication line, 8 Communication line,
10 customers, 11 distributed power sources, 12 loads, 13 PLC slave station devices,
32 PLC master station equipment, 71 Power distribution automation system,
711 LAN, 712 information processing device,
341 Voltmeter, 342 Ammeter, 343 Thermometer

Claims (9)

高圧配電線を介して供給される高電圧を低電圧に変換する変圧器と、
前記変圧器から出力される低電圧を需要家側に引き込む低圧配電線と、
前記変圧器に併設されるPLC親局装置と、
前記PLC親局装置に設けられ、前記変圧器の前記高圧配電線側/前記低圧配電線側の電圧又は電流、前記変圧器の所定部位の温度のうちの少なくともいずれかの計測値を取得する回路と、
前記低圧配電線に接続され、前記需要家における負荷に電力を供給する分散型電源と、
前記需要家側に設置され、前記低圧配電線を介して前記PLC親局装置と電力線通信を行い、前記分散型電源を制御するPLC子局装置と、
電力会社と前記需要家とを結ぶ通信線を介して前記PLC親局装置と通信可能に接続する情報処理装置と、
を含んで構成される前記分散型電源システムの制御方法であって、
前記PLC親局装置が、前記回路により取得された前記計測値を前記情報処理装置に通知するステップと、
前記情報処理装置が、前記PLC親局装置を介して行われる前記通信線及び前記電力線通信による通信により前記PLC子局装置と通信することにより、前記計測値に応じて前記分散型電源を制御するステップと、
前記PLC親局装置が、前記PLC子局装置と通信することにより前記計測値に応じて前記分散型電源を制御するステップと、
を含むこと
を特徴とする分散型電源システムの制御方法。
A transformer for converting a high voltage supplied via a high-voltage distribution line into a low voltage;
A low voltage distribution line that draws the low voltage output from the transformer to the consumer side; and
A PLC master station device attached to the transformer;
A circuit provided in the PLC master station device for obtaining a measured value of at least one of a voltage or current on the high-voltage distribution line side / low-voltage distribution line side of the transformer, or a temperature of a predetermined part of the transformer When,
A distributed power source connected to the low voltage distribution line and supplying power to a load in the consumer;
A PLC slave station device that is installed on the customer side, performs power line communication with the PLC master station device via the low-voltage distribution line, and controls the distributed power source;
An information processing device communicably connected to the PLC master station device via a communication line connecting an electric power company and the customer;
A control method for the distributed power supply system comprising:
The PLC master station device notifying the information processing device of the measured value acquired by the circuit;
The information processing apparatus communicates with the PLC slave station apparatus by communication using the communication line and the power line communication performed via the PLC master station apparatus, thereby controlling the distributed power source according to the measurement value Steps,
The PLC master station device controlling the distributed power source according to the measured value by communicating with the PLC slave station device;
A control method for a distributed power supply system, comprising:
請求項1に記載の分散型電源システムの制御方法であって、
前記PLC親局装置が、前記PLC子局装置と通信することにより前記計測値に応じて前記分散型電源を制御する前記ステップは、前記PLC親局装置が、前記情報処理装置が前記PLC子局装置と通信できないことを検知した場合に行われること
を特徴とする分散型電源システムの制御方法。
A control method for a distributed power supply system according to claim 1,
The step of controlling the distributed power source according to the measured value by the PLC master station device communicating with the PLC slave station device includes the PLC master station device and the information processing device serving as the PLC slave station. A control method for a distributed power supply system, which is performed when it is detected that communication with a device is impossible.
請求項1に記載の分散型電源システムの制御方法であって、
前記PLC子局装置が、前記分散型電源の稼働状態を前記情報処理装置に通知するステップと、
前記情報処理装置が、前記PLC親局装置を介して行われる前記通信線及び前記電力線通信による通信によって前記PLC子局装置と通信することにより、前記稼働状態に応じて前記分散型電源を制御するステップと、
前記PLC親局装置が、前記PLC子局装置と通信することにより前記稼働状態に応じて前記分散型電源を制御するステップと、
を含むこと
を特徴とする分散型電源システムの制御方法。
A control method for a distributed power supply system according to claim 1,
The PLC slave station device notifying the information processing device of the operating state of the distributed power source;
The information processing apparatus communicates with the PLC slave station apparatus by communication using the communication line and the power line communication performed via the PLC master station apparatus, thereby controlling the distributed power source according to the operating state. Steps,
The PLC master station device controlling the distributed power source according to the operating state by communicating with the PLC slave station device;
A control method for a distributed power supply system, comprising:
請求項3に記載の分散型電源システムの制御方法であって、
前記PLC親局装置が、前記PLC子局装置と通信することにより前記稼働状態に応じて前記分散型電源を制御する前記ステップは、前記PLC親局装置が、前記情報処理装置が前記PLC子局装置と通信できないことを検知した場合に行われること
を特徴とする分散型電源システムの制御方法。
A control method for a distributed power supply system according to claim 3,
The step of controlling the distributed power source according to the operating state by the PLC master station device communicating with the PLC slave station device is the PLC master station device, the information processing device is the PLC slave station. A control method for a distributed power supply system, which is performed when it is detected that communication with a device is impossible.
請求項3に記載の分散型電源システムの制御方法であって、
前記稼働状態は、前記分散型電源の出力端の電圧値、電流値、周波数、単独運転時における逆潮流の有無のうちの少なくともいずれかであること
を特徴とする分散型電源システムの制御方法。
A control method for a distributed power supply system according to claim 3,
The control method for a distributed power system, wherein the operating state is at least one of a voltage value, a current value, a frequency at the output terminal of the distributed power supply, and the presence or absence of a reverse power flow during single operation.
請求項1に記載の方法に用いられる前記PLC親局装置であって、
前記変圧器の前記高圧配電線側の電圧又は電流、前記低圧配電線側の電圧又は電流、及び前記変圧器の所定部位の温度のうちの少なくともいずれかの計測値を取得する回路と、
前記情報処理装置と通信する機能と、
前記回路により取得された前記計測値を前記情報処理装置に通知する機能と、
電力線通信により前記PLC子局装置と通信する機能と、
前記計測値に応じて前記分散型電源を制御する機能と、
を有すること
を特徴とするPLC親局装置。
It is the said PLC master station apparatus used for the method of Claim 1, Comprising:
A circuit for obtaining a measured value of at least one of the voltage or current on the high-voltage distribution line side of the transformer, the voltage or current on the low-voltage distribution line side, and the temperature of a predetermined part of the transformer;
A function of communicating with the information processing apparatus;
A function of notifying the information processing apparatus of the measured value acquired by the circuit;
A function of communicating with the PLC slave station device by power line communication;
A function of controlling the distributed power source according to the measured value;
A PLC master station device characterized by comprising:
請求項2に記載の方法に用いられる前記PLC親局装置であって、
前記情報処理装置が前記PLC子局装置と通信できないことを検知する機能と、
前記情報処理装置が前記PLC子局装置と通信できないことを検知した場合に、前記PLC子局装置と通信することにより前記計測値に応じて前記分散型電源の制御を開始する機能と、
を有すること
を特徴とするPLC親局装置。
It is the said PLC master station apparatus used for the method of Claim 2, Comprising:
A function of detecting that the information processing device cannot communicate with the PLC slave station device;
A function of starting control of the distributed power source according to the measurement value by communicating with the PLC slave station device when it is detected that the information processing device cannot communicate with the PLC slave station device;
A PLC master station device characterized by comprising:
請求項3に記載の方法に用いられる前記PLC親局装置であって、
前記PLC子局装置と通信することにより前記稼働状態に応じて前記分散型電源を制御する機能を有すること
を特徴とするPLC親局装置。
It is the said PLC master station apparatus used for the method of Claim 3, Comprising:
A PLC master station device having a function of controlling the distributed power source according to the operating state by communicating with the PLC slave station device.
請求項4に記載の方法に用いられる前記PLC親局装置であって、
前記情報処理装置が前記PLC子局装置と通信できないことを検知する機能と、
前記情報処理装置が前記PLC子局装置と通信できないことを検知した場合に、前記PLC子局装置と通信することにより前記稼働状態に応じて前記分散型電源の制御を開始する機能と、
を有すること
を特徴とするPLC親局装置。

It is the said PLC master station apparatus used for the method of Claim 4, Comprising:
A function of detecting that the information processing device cannot communicate with the PLC slave station device;
A function of starting control of the distributed power source according to the operating state by communicating with the PLC slave station device when detecting that the information processing device cannot communicate with the PLC slave station device;
A PLC master station device characterized by comprising:

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