JP7484477B2 - Power distribution line monitoring and protection equipment - Google Patents
Power distribution line monitoring and protection equipment Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims description 23
- 238000010248 power generation Methods 0.000 description 9
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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Description
本発明は、配電線を監視、保護する設備に関し、特に、分散型電源からの逆潮流を監視して配電線を保護する配電線監視保護設備に関する。 The present invention relates to equipment for monitoring and protecting a power distribution line, and more particularly to a power distribution line monitoring and protection equipment for protecting a power distribution line by monitoring reverse power flow from a distributed power source.
近年、太陽光発電装置や風力発電装置などの分散型電源が需要家に設置されるケースが増えており、分散型電源で発電された電力が逆潮流となって配電系統に流れ、その逆潮流値が許容値以上になると、配電設備が損傷して安定した電力供給が害されるおそれがある。このため、逆潮流が所定値以上になると配電線を遮断、開放する技術や逆電力継電装置が知られている（例えば、特許文献１参照。）。例えば、図４に示すように、配電線Ｌに配設されたリクローザ（柱上再閉路保護装置）１０１で太陽光発電装置Ｇなどからの逆潮流ＲＦを監視し、逆潮流ＲＦが所定の値（整定値）に達すると、リクローザ１０１が遮断して配電線Ｌを開放、遮断するものである。 In recent years, there has been an increase in the number of distributed power sources installed at consumer sites, such as photovoltaic power generation devices and wind power generation devices. When the power generated by the distributed power sources flows into the power distribution system as a reverse power flow, and if the reverse power flow value exceeds an allowable value, the power distribution equipment may be damaged and a stable power supply may be impaired. For this reason, there are known techniques and reverse power relays that cut off or open the power distribution line when the reverse power flow exceeds a predetermined value (see, for example, Patent Document 1). For example, as shown in FIG. 4, a recloser (pole-mounted reclosing protection device) 101 installed on the power distribution line L monitors the reverse power flow RF from a photovoltaic power generation device G, etc., and when the reverse power flow RF reaches a predetermined value (set value), the recloser 101 cuts off and opens or cuts off the power distribution line L.
ところで、リクローザ１０１が遮断した場合には、潮流のルートを変えたり、リクローザ１０１での負荷を大きくして逆潮流を軽減したりする検討、措置が必要となる。しかしながら、従来は、逆潮流が所定の値に達した時点でリクローザ１０１が急に遮断してしまうため、このような必要な検討、措置を事前に行うことができなかった。つまり、リクローザ１０１が遮断した時点で検討、措置を開始しなければならず、円滑かつ適正な対応が困難であった。特に、近年分散型電源の連系による逆潮流が増加しており、逆潮流が増加する傾向に対応することができていなかった。 When the recloser 101 is cut off, it is necessary to consider and take measures to reduce the reverse power flow by changing the power flow route or by increasing the load on the recloser 101. However, in the past, the recloser 101 would suddenly cut off when the reverse power flow reached a certain value, so it was not possible to conduct such necessary considerations and measures in advance. In other words, considerations and measures had to be started when the recloser 101 was cut off, making it difficult to respond smoothly and appropriately. In particular, reverse power flow due to the interconnection of distributed power sources has been increasing in recent years, and it has not been possible to respond to this trend of increasing reverse power flow.
そこでこの発明は、逆潮流に起因する遮断に対する検討、措置を円滑かつ適正に行うことを可能にする、配電線監視保護設備を提供することを目的とする。 SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a power distribution line monitoring and protection facility that enables smooth and appropriate investigation and measures to be taken against a power interruption caused by reverse power flow.
上記課題を解決するために、請求項１の発明は、配電線を流れる逆潮流を監視し、前記逆潮流が所定の遮断値に達すると前記配電線を遮断するリクローザを備え、前記リクローザは、前記逆潮流が前記所定の遮断値よりも小さい所定の注意値に達すると、所定の警報先に警報を発し、前記リクローザは、配電自動化システムと通信自在に接続され、前記配電自動化システムから前記リクローザに前記所定の注意値を設定可能となっている、ことを特徴とする配電線監視保護設備である。 In order to solve the above problems, the invention of claim 1 is a distribution line monitoring and protection equipment comprising a recloser that monitors reverse power flowing through a distribution line and cuts off the distribution line when the reverse power flow reaches a predetermined cut-off value, the recloser issues an alarm to a predetermined alarm destination when the reverse power flow reaches a predetermined caution value that is smaller than the predetermined cut-off value, and the recloser is connected to a distribution automation system so as to be able to communicate freely with the distribution automation system, allowing the predetermined caution value to be set in the recloser .
請求項１に記載の発明によれば、逆潮流が所定の遮断値に達して配電線が遮断される前に、逆潮流が所定の注意値に達すると所定の警報先（例えば、配電自動化システムのオペレータ）に警報が発せられる。すなわち、リクローザが遮断する前に、逆潮流が所定の遮断値を超える可能性が近いことが所定の警報先に通知される。このため、警報を受けた警報先において、リクローザつまり配電線が遮断された場合に必要となる検討、措置を、配電線が遮断される前に事前に円滑かつ適正に行うことが可能となる。すわわち、潮流のルートを変えたり、リクローザでの負荷を大きくして逆潮流を軽減したりする検討、措置を事前に円滑かつ適正に行うことが可能となる。 According to the invention described in claim 1 , when the reverse power flow reaches a predetermined caution value, an alarm is issued to a predetermined alarm destination (e.g., an operator of a power distribution automation system) before the reverse power flow reaches a predetermined cutoff value and the distribution line is cut off. That is, before the recloser cuts off, the predetermined alarm destination is notified that the reverse power flow is likely to exceed the predetermined cutoff value. This allows the alarm destination that receives the alarm to smoothly and appropriately carry out the studies and measures required in the event that the recloser, i.e., the distribution line, is cut off, before the distribution line is cut off. That is, it becomes possible to smoothly and appropriately carry out the studies and measures required in advance, such as changing the power flow route or increasing the load on the recloser to reduce the reverse power flow.
また、請求項１に記載の発明によれば、通信を介して配電自動化システムからリクローザに所定の注意値を設定可能となっている。つまり、所定の注意値を配電自動化システムから遠隔で設定できるため、リクローザが設置されている現地まで行くことなく、容易かつ迅速に所定の注意値を設定、変更することが可能となる。 According to the invention described in claim 1 , the predetermined caution value can be set in the recloser from the distribution automation system via communication. In other words, since the predetermined caution value can be set remotely from the distribution automation system, it becomes possible to easily and quickly set or change the predetermined caution value without going to the site where the recloser is installed.
以下、この発明を図示の実施の形態に基づいて説明する。 The present invention will be described below based on the illustrated embodiment.
図１～図３は、この発明の実施の形態を示し、図１は、この実施の形態に係る配電線監視保護設備１を示す概略構成図である。この配電線監視保護設備１は、太陽光発電装置Ｇなどの分散型電源が配電系統に連系されている状態において、分散型電源からの逆潮流ＲＦを監視して配電線Ｌを保護する設備であり、配電自動化システム２と複数のリクローザ３１とが通信自在に接続されて構成されている。 Figures 1 to 3 show an embodiment of the present invention, and Figure 1 is a schematic diagram showing a distribution line monitoring and protection equipment 1 according to this embodiment. This distribution line monitoring and protection equipment 1 is equipment that protects the distribution line L by monitoring reverse power flow RF from a distributed power source such as a solar power generation device G when the distributed power source is connected to a distribution system, and is configured by connecting a distribution automation system 2 and multiple reclosers 31 so that they can communicate freely.
配電自動化システム２は、配電系統の監視や開閉器４の制御などを行い、停電が発生すると配電系統上の停電エリアを特定したり、監視、制御の結果に基づいて、停電の発生や給電の復旧などの停電情報を生成したりする設備である。具体的には、電力会社などに広く導入されている配電自動化システムと同等の構成であり、配電自動化サーバ、配電遠制装置（遠方監視制御装置）および、監視制御卓、系統計画卓（ワークステーション）などを備え、それぞれがＬＡＮ（Ｌｏｃａｌ Ａｒｅａ Ｎｅｔｗｏｒｋ）で接続されている。また、電柱Ｐに取り付けられた開閉器４やリクローザ３１と、配電遠制装置とが伝送線路（専用回線）２１によって接続され、さらに、総合制御所２２を介して配電用変電所Ｈと配電遠制装置とが伝送線路２１によって接続されている。 The power distribution automation system 2 is a facility that monitors the power distribution system and controls the switches 4, and when a power outage occurs, identifies the power outage area on the power distribution system, and generates power outage information such as the occurrence of a power outage and the restoration of power supply based on the results of monitoring and control. Specifically, it has the same configuration as the power distribution automation systems widely introduced by electric power companies, and is equipped with a power distribution automation server, a power distribution remote control device (remote monitoring and control device), a monitoring and control desk, a system planning desk (workstation), etc., each of which is connected by a LAN (Local Area Network). In addition, the switches 4 and reclosers 31 attached to the utility poles P are connected to the power distribution remote control device by a transmission line (dedicated line) 21, and further, the power distribution substation H and the power distribution remote control device are connected by the transmission line 21 via the general control center 22.
そして、配電線Ｌの運用状態を常時監視し、例えば、配電線事故による停電が発生すると、開閉器４を制御しながら停電を引き起こした事故箇所を特定し、事故区間以外の配電線Ｌへの配電（自動逆送）を行う。このようにして、開閉器４の開閉によって停電エリアが画定され、開閉器４を境にして停電エリアと非停電エリアとが分かれることになる。また、変電所事故（特高事故、瞬時電圧低下など）による停電が発生すると、停電が発生した地域に対して周辺の配電線Ｌからの配電（自動逆送）を行ったりするものである。 The system constantly monitors the operational status of the distribution lines L, and when a power outage occurs due to a distribution line accident, for example, the switch 4 is controlled to identify the location of the accident that caused the power outage, and power is distributed (automatic reverse transmission) to distribution lines L other than the accident section. In this way, the power outage area is defined by opening and closing the switch 4, and the power outage area and non-powered area are separated by the switch 4. In addition, when a power outage occurs due to a substation accident (extra-high voltage accident, momentary voltage drop, etc.), power is distributed (automatic reverse transmission) from the surrounding distribution lines L to the area where the power outage occurred.
リクローザ３１は、配電線Ｌを流れる太陽光発電装置Ｇなどからの逆潮流ＲＦを監視し、逆潮流ＲＦが遮断整定値（所定の遮断値）に達すると開閉器４を投入、遮断して、逆潮流ＲＦが配電線Ｌに流れるのを防止する機能を備えた柱上再閉路保護装置であり、電柱Ｐに配設されている。このような従来からの機能に加えて、本リクローザ３１は、逆潮流ＲＦが遮断整定値よりも小さい注意整定値（所定の注意値）に達すると、所定の警報先、この実施の形態では配電自動化システム２に警報を発する。 The recloser 31 is a pole-mounted reclosing protection device that monitors the reverse RF current from photovoltaic power generation equipment G or the like that flows through the distribution line L, and when the reverse RF current reaches a cutoff setting (predetermined cutoff value), it closes and cuts off the switch 4 to prevent the reverse RF current from flowing through the distribution line L. It is installed on the utility pole P. In addition to these conventional functions, when the reverse RF current reaches a caution setting (predetermined caution value) that is smaller than the cutoff setting, the recloser 31 issues an alarm to a predetermined alarm destination, in this embodiment, the distribution automation system 2.
すなわち、遮断整定値を２００Ａ、注意整定値を１８０Ａとした場合、リクローザ３１で逆潮流ＲＦを監視し、図２（ａ）に示すように、逆潮流ＲＦが注意整定値の１８０Ａに達すると、リクローザ３１から配電自動化システム２の監視制御卓などに警報ブザー音等を発する。ここで、配電自動化システム２に警報を発する際には、リクローザ３１の識別情報とともに逆潮流ＲＦの値を時系列に通知する。これにより、配電自動化システム２側において逆潮流ＲＦの時間的変化、傾向を把握して、配電線Ｌが遮断された場合に要する検討、措置をより適正に行えるものである。続いて、図２（ｂ）に示すように、逆潮流ＲＦがさらに上昇して遮断整定値の２００Ａに達すると、リクローザ３１が開閉器４を投入して配電線Ｌを開放、遮断し、遮断整定値以上の逆潮流ＲＦが配電線Ｌに流れるのを防止する。 That is, when the tripping setting is 200A and the caution setting is 180A, the recloser 31 monitors the reverse flow RF, and when the reverse flow RF reaches the caution setting of 180A as shown in FIG. 2(a), the recloser 31 issues an alarm buzzer sound to the monitoring control console of the power distribution automation system 2. When an alarm is issued to the power distribution automation system 2, the value of the reverse flow RF is notified in chronological order along with the identification information of the recloser 31. This allows the power distribution automation system 2 to grasp the time-dependent change and tendency of the reverse flow RF, and to more appropriately consider and take measures when the power distribution line L is cut off. Next, as shown in FIG. 2(b), when the reverse flow RF further increases and reaches the tripping setting of 200A, the recloser 31 closes the switch 4 to open and cut off the power distribution line L, preventing the reverse flow RF above the tripping setting from flowing into the power distribution line L.
ここで、注意整定値の値、つまり、遮断整定値と注意整定値との差は、警報が発せられてから遮断されるまでの間に、配電線Ｌが遮断された場合に要する検討、措置を事前に円滑かつ適正に行えるだけの時間が確保され、かつ、頻繁に（無用に）警報が発せられないように設定されている。つまり、遮断整定値に近い値であって、かつ、事前検討、措置を適正に行えるように、注意整定値の値が設定されている。 The value of the caution setting, i.e., the difference between the tripping setting and the caution setting, is set so that there is enough time between the issuance of an alarm and the actual tripping to allow for smooth and proper advance consideration and measures to be taken in case the distribution line L is tripped, and so that alarms are not issued frequently (unnecessarily). In other words, the caution setting is set to a value close to the tripping setting and so that advance consideration and measures can be taken appropriately.
さらに、このような注意整定値を配電自動化システム２から各リクローザ３１に遠隔で設定可能となっている。すなわち、図３に示すように、リクローザ３１を子局とする柱上再閉路保護装置の親局３０が、配電自動化システム２が設置された運転制御センターＣ内に設置されて、配電自動化システム２と通信自在に接続されている。また、親局３０と各リクローザ３１は、配電用変電所Ｈの変電所中継器５１および電柱Ｐ上の信号分配器５２を介して、伝送線路２１によって通信自在に接続されている。 Furthermore, such caution setting values can be remotely set from the distribution automation system 2 to each recloser 31. That is, as shown in FIG. 3, a master station 30 of the pole-mounted reclosing protection device, with the recloser 31 as a slave station, is installed in the operation control center C where the distribution automation system 2 is installed, and is connected to the distribution automation system 2 so as to be able to communicate freely. In addition, the master station 30 and each recloser 31 are connected to each other so as to be able to communicate freely by a transmission line 21 via a substation repeater 51 in the distribution substation H and a signal distributor 52 on the utility pole P.
このようにして配電自動化システム２と各リクローザ３１とが通信自在に接続され、配電自動化システム２から各リクローザ３１に注意整定値を送信すると、各リクローザ３１において受信した注意整定値を入力、設定するようになっている。また、この実施の形態では、同様にして、遮断整定値も配電自動化システム２から各リクローザ３１に遠隔で設定可能となっている。一方、上記の各リクローザ３１からの警報は、同様の通信経路を経て配電自動化システム２に通知される。 In this way, the distribution automation system 2 and each recloser 31 are connected to communicate freely, and when the distribution automation system 2 transmits a caution setting value to each recloser 31, the received caution setting value is input and set in each recloser 31. In this embodiment, similarly, the cutoff setting value can also be remotely set in each recloser 31 from the distribution automation system 2. Meanwhile, alarms from each recloser 31 are notified to the distribution automation system 2 via a similar communication path.
ここで、配電自動化システム２から所定のリクローザ３１を指定したりする（リクローザ３１の識別情報を付加したりする）ことで、各リクローザ３１に対して異なる値の注意整定値と遮断整定値を設定可能となっている。また、配電自動化システム２から注意整定値を設定する場合としては、例えば、逆潮流ＲＦの変動傾向、変動速度などに応じて注意整定値を変更、調整する必要が生じるケースが挙げられる。同様に、遮断整定値を設定する場合としては、例えば、配電系統の負荷変動などに応じて遮断整定値を変更、調整する必要が生じるケースが挙げられる。 Here, by specifying a specific recloser 31 from the distribution automation system 2 (adding identification information of the recloser 31), it is possible to set different caution setting values and tripping setting values for each recloser 31. In addition, as an example of a case where a caution setting value is set from the distribution automation system 2, there is a case where it is necessary to change or adjust the caution setting value depending on the fluctuation trend and fluctuation speed of the reverse power flow RF. Similarly, as an example of a case where a tripping setting value is set, there is a case where it is necessary to change or adjust the tripping setting value depending on load fluctuations in the distribution system.
このような構成の配電線監視保護設備１による配電線監視保護方法によれば、太陽光発電装置Ｇなどの分散型電源から配電線Ｌに流れる逆潮流ＲＦが各リクローザ３１で監視され、逆潮流ＲＦが注意整定値に達すると、該当するリクローザ３１から配電自動化システム２に警報が発せられる。さらに、逆潮流ＲＦが上昇して遮断整定値に達すると、該当するリクローザ３１で配電線Ｌが遮断、解放される。 According to the distribution line monitoring and protection method using the distribution line monitoring and protection equipment 1 configured as described above, the reverse power flow RF flowing from a distributed power source such as a solar power generation device G to the distribution line L is monitored by each recloser 31, and when the reverse power flow RF reaches a caution setting, an alarm is issued from the corresponding recloser 31 to the distribution automation system 2. Furthermore, when the reverse power flow RF increases and reaches a cutoff setting, the corresponding recloser 31 cuts off and opens the distribution line L.
以上のように、この配電線監視保護設備１および配電線監視保護方法によれば、逆潮流ＲＦが遮断整定値に達して配電線Ｌが遮断される前に、逆潮流ＲＦが注意整定値に達すると配電自動化システム２に警報が発せられる。すなわち、リクローザ３１が遮断する前に、逆潮流ＲＦが遮断整定値を超える可能性が近いことが配電自動化システム２に通知される。このため、警報を受けた配電自動化システム２のオペレータなどが、リクローザ３１つまり配電線Ｌが遮断された場合に必要となる検討、措置を、配電線Ｌが遮断される前に事前に円滑かつ適正に行うことが可能となる。すわわち、潮流のルートを変えたり、リクローザ３１での負荷を大きくして逆潮流ＲＦを軽減したりする検討、措置を事前に円滑かつ適正に行うことが可能となる。 As described above, according to the distribution line monitoring and protection equipment 1 and the distribution line monitoring and protection method, when the reverse flow RF reaches the caution setting, an alarm is issued to the distribution automation system 2 before the reverse flow RF reaches the cutoff setting and the distribution line L is cut off. That is, before the recloser 31 cuts off, the distribution automation system 2 is notified that the reverse flow RF is likely to exceed the cutoff setting. This allows the operator of the distribution automation system 2 who receives the alarm to smoothly and appropriately conduct the examination and measures required when the recloser 31, i.e., the distribution line L, is cut off, before the distribution line L is cut off. That is, it becomes possible to smoothly and appropriately conduct the examination and measures required in advance, such as changing the route of the power flow or increasing the load on the recloser 31 to reduce the reverse flow RF.
また、伝送線路２１を介して配電自動化システム２から各リクローザ３１に注意整定値と遮断整定値を設定可能となっている。つまり、注意整定値と遮断整定値を配電自動化システム２から遠隔で設定できるため、各リクローザ３１が設置されている現地まで行くことなく、容易かつ迅速に注意整定値と遮断整定値を設定、変更することが可能となる。 In addition, the caution setting value and the cutoff setting value can be set for each recloser 31 from the distribution automation system 2 via the transmission line 21. In other words, since the caution setting value and the cutoff setting value can be set remotely from the distribution automation system 2, it becomes possible to easily and quickly set and change the caution setting value and the cutoff setting value without going to the site where each recloser 31 is installed.
以上、この発明の実施の形態について説明したが、具体的な構成は、上記の実施の形態に限られるものではなく、この発明の要旨を逸脱しない範囲の設計の変更等があっても、この発明に含まれる。例えば、上記の実施の形態では、所定の警報先として配電自動化システム２に警報を発しているが、その他の警報先、例えば、監視担当者の携帯端末などに警報を発してもよい。また、リクローザ３１が開閉器４を投入して配電線Ｌを遮断する場合について説明したが、リクローザ３１自体が開閉器を備えて配電線Ｌを遮断するようにしてもよい。 Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and the present invention includes design changes that do not deviate from the gist of the present invention. For example, in the above embodiment, the alarm is issued to the power distribution automation system 2 as the specified alarm destination, but the alarm may be issued to another alarm destination, such as a mobile terminal of a monitoring personnel. In addition, the case where the recloser 31 closes the switch 4 to cut off the distribution line L has been described, but the recloser 31 itself may be equipped with a switch and cut off the distribution line L.
１ 配電線監視保護設備
２ 配電自動化システム（所定の警報先）
２１ 伝送線路
３０ 親局
３１ リクローザ（子局）
４ 開閉器
５１ 変電所中継器
５２ 信号分配器
Ｃ 運転制御センター
Ｈ 配電用変電所
Ｌ 配電線
ＲＦ 逆潮流
Ｇ 太陽光発電装置（分散型電源）
1. Power distribution line monitoring and protection equipment 2. Power distribution automation system (predetermined alarm destination)
21 Transmission line 30 Parent station 31 Recloser (child station)
4 Switchgear 51 Substation repeater 52 Signal distributor C Operation control center H Distribution substation L Distribution line RF Reverse power flow G Photovoltaic power generation device (distributed power source)
Claims (1)
前記リクローザは、前記逆潮流が前記所定の遮断値よりも小さい所定の注意値に達すると、所定の警報先に警報を発し、
前記リクローザは、配電自動化システムと通信自在に接続され、前記配電自動化システムから前記リクローザに前記所定の注意値を設定可能となっている、
ことを特徴とする配電線監視保護設備。 a recloser that monitors a reverse power flow through a distribution line and cuts off the distribution line when the reverse power flow reaches a predetermined cutoff value;
The recloser issues an alarm to a predetermined alarm destination when the reverse power flow reaches a predetermined caution value that is smaller than the predetermined cutoff value,
The recloser is connected to a power distribution automation system so as to be able to communicate with the recloser, and the predetermined caution value can be set in the recloser from the power distribution automation system.
A power distribution line monitoring and protection equipment.
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|---|---|---|---|---|
| JP2007129852A (en) | 2005-11-04 | 2007-05-24 | Chugoku Electric Power Co Inc:The | Photovoltaic power generation evaluation system, information processor, and photovoltaic power generation evaluation method |
| JP2009141621A (en) | 2007-12-05 | 2009-06-25 | Chugoku Electric Power Co Inc:The | Tester for switch remote control apparatus |
| JP2014087184A (en) | 2012-10-24 | 2014-05-12 | Chugoku Electric Power Co Inc:The | Monitoring device, monitoring system and program |
| JP2015186374A (en) | 2014-03-25 | 2015-10-22 | 大倉電気株式会社 | Reverse power flow monitoring apparatus for power system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007129852A (en) | 2005-11-04 | 2007-05-24 | Chugoku Electric Power Co Inc:The | Photovoltaic power generation evaluation system, information processor, and photovoltaic power generation evaluation method |
| JP2009141621A (en) | 2007-12-05 | 2009-06-25 | Chugoku Electric Power Co Inc:The | Tester for switch remote control apparatus |
| JP2014087184A (en) | 2012-10-24 | 2014-05-12 | Chugoku Electric Power Co Inc:The | Monitoring device, monitoring system and program |
| JP2015186374A (en) | 2014-03-25 | 2015-10-22 | 大倉電気株式会社 | Reverse power flow monitoring apparatus for power system |
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