JP3075740B2 - Accident point separation device - Google Patents
Accident point separation deviceInfo
- Publication number
- JP3075740B2 JP3075740B2 JP02294430A JP29443090A JP3075740B2 JP 3075740 B2 JP3075740 B2 JP 3075740B2 JP 02294430 A JP02294430 A JP 02294430A JP 29443090 A JP29443090 A JP 29443090A JP 3075740 B2 JP3075740 B2 JP 3075740B2
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- section
- accident
- ground fault
- distribution line
- sections
- 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.)
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Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は配電系統の運用に際して使用される事故点切
離し装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial application field) The present invention relates to an accident point separation device used when operating a power distribution system.
（従来の技術） 従来のこの種の装置における地絡事故検出・事故区間
判定・事故区間の負荷側健全区間に対する送電操作につ
いて、第５図をもとに説明する。(Prior Art) A ground fault accident detection / accident section judgment / power transmission operation for a load-side healthy section of an accident section in a conventional device of this type will be described with reference to FIG.
第５図は、配電線F1,F2、区間開閉器22a〜22d等で構
成される配電系統において、配電線F2のK3区間で地絡事
故が発生した場合を示している。FIG. 5 shows a case where a ground fault has occurred in section K3 of distribution line F2 in a distribution system including distribution lines F1 and F2, section switches 22a to 22d, and the like.
第５図において、K3区間に送電する配電線F2にある保
護装置202が地絡事故の発生を検出すると、通常1.5ない
し2.0秒程度で配電線F2のしゃ断器201をしゃ断するた
め、配電線F2のK1,K2,K3,K4区間は停電となる。配電線F
2のしゃ断器201のしゃ断後に再閉路装置200が動作し、
一定時限後に配電線F2のしゃ断器201が投入され、子局2
3a,23bの順次投入機能（以下順投機能という）によっ
て、区分開閉器22a,22bが投入される。この結果、K1,K
2,K3区間は充電状態となるが、K3区間に事故状態が継続
している場合は再度地絡電流が流れ、配電線F2の保護装
置202が地絡事故を再検出し、配電線F2のしゃ断器201を
再度しゃ断する。一般に配電系統に設置される子局22
は、開閉器への投入指令の一定時限（通常数秒）内に電
源電圧を喪失した場合、開閉器を切り状態でロックする
機能を有しており、この機能により区分開閉器22bは、
切りロック状態となる。配電線F2のしゃ断器201が再し
ゃ断した後、再閉路装置200によって、配電線F2のしゃ
断器201が再度投入となる。この結果、子局23aの順投機
能によって区分開閉器22aは投入されるが、区分開閉器2
2bは切りロック状態であるため投入されず、K1とK2区間
が充電となり、K3区間,K4区間は停電のままとなる。In FIG. 5, when the protection device 202 in the distribution line F2 transmitting power to the section K3 detects the occurrence of a ground fault, the circuit breaker 201 of the distribution line F2 is normally cut off in about 1.5 to 2.0 seconds. The K1, K2, K3, and K4 sections are blackouts. Distribution line F
The reclosing device 200 operates after the breaking of the second circuit breaker 201,
After a certain period of time, the breaker 201 of the distribution line F2 is turned on, and the slave station 2
By the sequential closing function of 3a and 23b (hereinafter referred to as a forward throw function), the sectional switches 22a and 22b are closed. As a result, K1, K
2, The K3 section is charged, but if the accident state continues in the K3 section, a ground fault current flows again, the protection device 202 of the distribution line F2 re-detects the ground fault, and the The circuit breaker 201 is cut off again. Substations 22 typically installed in distribution systems
Has a function of locking the switch in a cut-off state when the power supply voltage is lost within a certain time period (usually several seconds) of the switching command to the switch.
It becomes a cut-off locked state. After the circuit breaker 201 of the distribution line F2 is again cut off, the circuit breaker 201 of the distribution line F2 is turned on again by the reclosing device 200. As a result, the segment switch 22a is turned on by the forward throw function of the slave station 23a, but the segment switch 2a is turned on.
Since 2b is in the cut-off locked state, it is not turned on, the sections K1 and K2 are charged, and the sections K3 and K4 remain out of power.
ここで、K4区間は事故要因を有しない健全な区間であ
るため、オペレータ204は、K4区間に送電するために遠
方制御装置203を操作し、区分開閉器22dを投入操作し区
分開閉器22cを切りロック操作する。この結果、事故区
間であるK3区間だけが停電となり、地絡事故発生前に電
力の供給を受けていた配電線から切離されることとな
る。Here, since the K4 section is a healthy section having no accident cause, the operator 204 operates the remote control device 203 to transmit power to the K4 section, turns on the section switch 22d, and operates the section switch 22c. Operate the cut lock. As a result, only the K3 section, which is the accident section, experiences a power outage and is disconnected from the distribution line that was receiving power before the ground fault occurred.
このように従来の設置構成では、地絡事故発生時、配
電線しゃ断器のしゃ断，再閉路，再しゃ断，再々閉路動
作により、当該配電線の区間の停電と送電を繰り返しな
がら、事故区間のみを切離さざるをえなかった。As described above, in the conventional installation configuration, when a ground fault occurs, the distribution line breaker cuts off, recloses, re-blocks, and re-closes the circuit, repeating power outages and power transmissions in the section of the distribution line, and controlling only the accident section. I had to cut it off.
最近では、電子計算機によって事故区間の判定、及び
事故区間の負荷側健全区間に対する他の健全配電線から
の自動送電を行なう装置も開発されて実運用に供されて
いるが、この種の装置においても、配電線のしゃ断，再
閉路を繰り返しつつ地絡事故区間を切離すことは同様で
あった。In recent years, a device for determining an accident section by a computer and automatically transmitting power from another healthy distribution line to a load-side healthy section of the accident section has also been developed and provided for actual operation. However, it was the same as separating the ground fault section while repeatedly disconnecting and re-closing the distribution line.
（発明が解決しようとする課題） 前記した従来のこの種の装置では、配電線しゃ断器の
しゃ断と再閉路を繰り返すことで地絡事故区間の判定を
行なっているため、配電線しゃ断器のしゃ断の都度、当
該配電線全体が停電となり、事故区間以外の健全停電区
間が無用に停電する問題があった。(Problems to be Solved by the Invention) In the above-described conventional device of this type, the ground fault accident section is determined by repeating the disconnection and the re-closing of the distribution line breaker. Each time, there was a problem that the entire distribution line was blacked out, and unnecessarily blacked out in healthy blackout sections other than the accident section.
また、事故区間の負荷側健全区間の送電操作は、事故
区間が確定した後負荷側健全区間がどの区間であるか認
識されたときから開始するため、負荷側健全区間の送電
が遅れるという不都合もあった。In addition, since the power transmission operation on the load-side healthy section of the accident section starts after the accident section is determined and the load-side healthy section is recognized, the power transmission in the load-side healthy section is delayed. there were.
本発明は上記問題点を解決するためになされたもので
あり、配電線しゃ断器がしゃ断される前に事故区間を検
出し、事故区間の負荷側健全区間を他の健全配電線に切
替え、最終的には地絡事故区間を、事故前に送電を受け
ていた配電線から切離し、配電線の地絡事故時において
停電となる区間を極小化することの可能な事故点切離し
装置を提供することを目的としている。The present invention has been made in order to solve the above problems, detects an accident section before the distribution line breaker is cut off, switches the load side healthy section of the accident section to another sound distribution line, To provide an accident point disconnection device that can separate the ground fault accident section from the distribution line that was receiving power transmission before the accident and minimize the section where power failure occurs at the time of the distribution line ground fault accident. It is an object.
［発明の構成］ （課題を解決するための手段） 本発明は区分開閉器によって複数区画に区分された各
区分点を有し、前記区分されたいずれかの区間に事故が
発生したとき当該事故区間を分離すると共に、負荷側健
全区間を他の健全配電線に切替える処理を行なう事故切
離し装置において、配電用高圧線から前記高圧線を支持
する支持物への地絡電流を検知して地絡事故の発生を検
出する地絡検出手段と、前記地絡検知手段から通知され
る地絡情報を基に当該動作した地絡検出手段が設置され
ている区間を事故区間と直接判定する事故判定手段と、
制御対象配電線の全区間あるいは特定区間に対する負荷
側健全区間の切替手順を系統状態変化時に計算して記憶
しておく手順計算手段と、配電線しゃ断器がその保護リ
レーによってしゃ断する以前に、前記事故判定手段によ
り直接事故判定された事故区間に対応して前記手順計算
手段に予め記憶されている前記切替手順を用いて、該当
開閉器を操作する制御手段とを備えた。[Configuration of the Invention] (Means for Solving the Problems) The present invention has each section point divided into a plurality of sections by a section switch, and when an accident occurs in any of the sectioned sections, the accident In an accident isolation device that separates sections and switches a healthy section on the load side to another healthy distribution line, a ground fault is detected by detecting a ground fault current from a high-voltage line for distribution to a support supporting the high-voltage line. Ground fault detecting means for detecting occurrence of an accident, and accident determining means for directly determining a section where the operated ground fault detecting means is installed as an accident section based on ground fault information notified from the ground fault detecting means. When,
Procedure calculation means for calculating and storing the switching procedure of the load-side healthy section for the entire section or the specific section of the controlled distribution line when the system state changes, and before the distribution line breaker is shut off by the protection relay, Control means for operating the corresponding switch using the switching procedure stored in advance in the procedure calculating means in correspondence with the accident section in which the accident determining means directly determines the accident.
（作 用） 先ず、手順計算手段３は予め全区間の事故を想定し各
区間の負荷側健全区間を、他の健全配電線から切替える
手順と当該区間を切離す手順を計算し、地絡検出手段１
は、高圧線から高圧線を支持する支持物への地絡電流の
有無を検出し、地絡検出手段１から通知された地絡情報
をもとに、配電系統のどの区間で地絡が発生したかを事
故判定手段２によって判定する。次いで事故判定手段２
による事故区間判定後に制御手段は予め算出されている
手順にもとづいて、区分開閉器の入り／切り制御をし、
事故区間の負荷側健全区間を他の健全配電線に切替える
と共に、地絡事故区間を事故前に送電を受けていた配電
線から切離す。(Operation) First, the procedure calculation means 3 calculates a procedure for switching a healthy section on the load side of each section from another healthy distribution line and a procedure for disconnecting the section from a healthy distribution line, assuming an accident in all sections in advance, and detecting a ground fault. Means 1
Detects the presence or absence of a ground fault current from the high voltage line to the support supporting the high voltage line, and based on the ground fault information notified from the ground fault detecting means 1, a section of the power distribution system in which a ground fault occurs. Is determined by the accident determination means 2. Next, accident determination means 2
After determining the accident section according to the above, the control means performs on / off control of the sectional switch based on a procedure calculated in advance,
The healthy section on the load side of the accident section will be switched to another sound distribution line, and the ground fault section will be separated from the distribution line that was receiving power transmission before the accident.
（実施例） 以下図面を参照して実施例を説明する。(Example) Hereinafter, an example is described with reference to drawings.
第２図は本発明による事故点切離し装置の一実施例の
全体構成図であり、配電系統図は支持物21に地絡検出セ
ンサー11を設けた点を除いて第５図と同様である。100
は各子局からの情報を受ける親局装置、101は電子計算
機で事故判定プログラム12,手順計算プログラム13,区分
開閉器制御プログラム14及び設備データファイル15,現
在系統ファイル16,手順ファイル17から構成される。FIG. 2 is an overall configuration diagram of an embodiment of an accident point separating apparatus according to the present invention, and a power distribution system diagram is the same as FIG. 5 except that a ground fault detection sensor 11 is provided on a support 21. 100
Is a master station device which receives information from each slave station, 101 is an electronic computer, which comprises an accident determination program 12, a procedure calculation program 13, a section switch control program 14, an equipment data file 15, a current system file 16, and a procedure file 17. Is done.
第３図は設備データファイルの構成例図であり、子局
アドレスに対応してセンサー所属区間が格納されてい
る。例えば子局23bのアドレス２の場合、センサーの所
属区間はK3である。FIG. 3 is a diagram showing an example of the configuration of a facility data file, in which sensor belonging sections are stored corresponding to slave station addresses. For example, in the case of the address 2 of the slave station 23b, the section to which the sensor belongs is K3.
次に、作用を説明する。 Next, the operation will be described.
先ず、手順計算プログラム13は、区分開閉器で区分さ
れる全区間または特定の区間に対し、事前に地絡事故の
発生を仮定し、地絡事故が実際に発生する以前に、配電
線F2の送電状態を示す現在系統ファイル16をもとに定周
期または系統状態が変化する都度、区間毎に当該区間の
負荷側健全区間の切替え手順と、当該区間の停電操作手
順を計算し、手順ファイル17へ第４図に示すように区間
単位に記憶する。First, the procedure calculation program 13 assumes that a ground fault has occurred in advance for the entire section or a specific section divided by the section switch, and before the ground fault actually occurs, the distribution line F2 Each time the fixed cycle or the system status changes based on the current system file 16 indicating the power transmission status, the procedure for switching the load-side healthy section of the section and the power failure operation procedure for the section are calculated for each section, and the procedure file 17 Is stored in units of sections as shown in FIG.
図は手順送出順位にしたがってどのような指令手順を
送出するかが示されている。前記した通り事故区間がK3
であり、K3区間の負荷側健全区間を配電線F1側に切替え
る場合、第１番目に常開開閉器22d入り指令を出して配
電線F1側に接続した後、第２番目に22c切り指令によっ
てK3区間を切離し、第３番目に22b切り指令によって事
故区間K3そのものを配電線から分離してしまうものであ
る。The figure shows what kind of command procedure is sent according to the procedure sending order. As mentioned above, the accident section is K3
When switching the load-side healthy section of the K3 section to the distribution line F1 side, first issue a command to enter the normally open switch 22d and connect to the distribution line F1 side, and then, by a 22c disconnection command secondly, The K3 section is separated, and the accident section K3 itself is separated from the distribution line by the third 22b disconnection command.
ここで、配電線のK3区間にある支持物21で地絡事故が
発生したとすると、この支持物21に設置された地絡セン
サー11は、（0.2秒以外に）地絡電流を検出し、かつ子
局23bを介し親局装置100へ通知する。親局装置100は、
（0.1秒以内に）子局23bから通知された地絡センサー動
作を電子計算機101へ通知する。電子計算機101は、（0.
2秒以内に）親局装置100からの地絡情報通知により、事
故判定プログラム12を起動する。事故判定プログラム12
は、地絡情報を通知した子局23bの子局アドレスをもと
に、第３図に示す設備データファイル15を検索し、事故
区間をK3区間と判定したのち手順ファイル17から予め計
算されているK3区間の手順を検索する。Here, if a ground fault occurs in the support 21 in the section K3 of the distribution line, the ground fault sensor 11 installed on the support 21 detects a ground fault current (other than 0.2 seconds), And, it notifies the master station device 100 via the slave station 23b. The master station device 100
The operation of the ground fault sensor notified from the slave station 23b (within 0.1 second) is notified to the computer 101. The electronic computer 101 (0.
The accident determination program 12 is started by the ground fault information notification from the master station device 100 (within 2 seconds). Accident judgment program 12
Is searched from the equipment data file 15 shown in FIG. 3 based on the slave station address of the slave station 23b that has notified the ground fault information, and the accident section is determined in advance as the K3 section. Search the procedure for the K3 section that is located.
そのために区分開閉器制御プログラム14を起動し、区
分開閉器制御プログラム14は、手順ファイル17より手順
送出順に手順を取り出し、親局装置100へ送出する。親
局装置100は、（0.8秒以内に）区分開閉器22dを入り、2
2c,22bを切り操作する。この結果、配電線F2において地
絡事故が発生後、（1.3秒以内に）地絡事故区間であるK
3は停電し、K4区間は配電線F1に切替えられる。For this purpose, the segment switch control program 14 is started, and the segment switch control program 14 extracts the procedures from the procedure file 17 in the order of sending the procedures, and sends the procedures to the master station device 100. The master station device 100 enters the sectional switch 22d (within 0.8 seconds) and
Turn off 2c and 22b. As a result, after a ground fault occurs in distribution line F2, K (the
3 goes out of power and section K4 is switched to distribution line F1.
上記実施例によれば支持物単位に設置される地絡セン
サーを用いて、直接に事故区間を識別し、（1.3秒以内
に）区分開閉器の操作を完了することにより、配電線し
ゃ断器がしゃ断する前に、事故区間の切離しができる。According to the above embodiment, the fault section is directly identified by using the ground fault sensor installed in the support unit, and the operation of the sectional switchgear is completed (within 1.3 seconds). Before the interruption, the accident section can be separated.
上記実施例以外に以下に列挙する方式のものであって
もよい。In addition to the above embodiment, the following types may be used.
上記実施例の地絡検出手段は、高圧線から支持物へ
の地絡電流を地絡センサーが検出して子局へ地絡の発生
を通知するものであったが、変電所バンクならびに配電
線に地絡電流の有無を検出する地絡検出手段を夫々付加
し、バンク，配電線，子局夫々の地絡検出情報を再度電
子計算機へ通知し、電子計算機の有する事故判定手段に
おいてこれら総合的に判定するようにすれば、子局単独
の誤動作によるシステムの誤動作を回避できる。Although the ground fault detecting means of the above embodiment detects the ground fault current from the high voltage line to the support by the ground fault sensor and notifies the slave station of the occurrence of the ground fault, the substation bank and the distribution line The ground fault detection means for detecting the presence or absence of a ground fault current is added to each computer, and the ground fault detection information of each of the bank, the distribution line, and the slave station is notified to the computer again. , The malfunction of the system due to the malfunction of the slave station alone can be avoided.
上記実施例の手順計算手段で求められる手順は、事
故区間の負荷側健全区間を他の健全配電線から無停電で
切替えるものであるが、この無停電切替えを停電切替
え、即ち、事故区間の負荷側健全区間を一端停電させ、
その後他の健全配電線から送電する（前記実施例では、
区分開閉器22c切り,22d入りとなる）ことで、配電系統
の特性による他の配電線への地絡事故波及等を防止する
ことが可能となる。The procedure obtained by the procedure calculating means of the above embodiment is to switch the healthy section on the load side of the accident section from another healthy distribution line without interruption, and to switch this uninterruptible switching to the interruption, ie, the load of the accident section. Power outage on the side healthy section,
After that, power is transmitted from another healthy distribution line (in the above embodiment,
By turning off the section switch 22c and entering the section 22d), it is possible to prevent ground faults from spreading to other distribution lines due to the characteristics of the distribution system.
上記実施例の事故点切離しは、地絡発生を初回検出
した事故区間を切離すものであるが、これに限定される
ものではなく事故区間切離し後に、切離した事故区間へ
の試送電を行なう試送電手段と、試送電による再度の地
絡現象が検出された場合の、事故区間切離し手順再送出
手段とを付加し、試送電手段と地絡検出手段により、一
度停電とした事故区間に対して試送電を行なうことで、
再度地絡現象が検出されるか否かを判定してもよい。こ
のようにすれば試送電の結果、再度地絡現象が検出され
れば、事故区間切離し手順再送出手段により、当該区間
の切離し手順を送出して停電とすることで、事故区間へ
の再送電時に地絡現象が消滅していれば、事故区間は送
電されて停電を回避できる。したがって瞬間地絡または
間欠地絡事故に対して、より停電時間を短縮できる。The separation of the fault point in the above embodiment is to separate the faulty section where the ground fault occurrence is detected for the first time.However, the faulty point separation is not limited to this. The power transmission means and the fault section separation procedure re-transmission means in the case where the ground fault phenomenon due to the test power transmission is detected again are added. By conducting test transmission,
It may be determined whether or not the ground fault phenomenon is detected again. In this way, if the ground fault phenomenon is detected again as a result of the test power transmission, the faulty section disconnection procedure retransmission means sends the procedure for disconnecting the section and causes a power outage, thereby re-transmitting power to the faulty section. If the ground fault phenomenon has disappeared at times, power can be transmitted in the accident section to avoid a power outage. Therefore, the power outage time can be further reduced for an instantaneous ground fault or an intermittent ground fault.
［発明の効果］ 以上説明したよに、本発明によれば事故区間の瞬時判
定と高速かつ自動的な、開閉器遠方操作を行なうことに
より、配電線しゃ断器のしゃ断に伴なう健全区間の無用
な停電を引き起こすことなく、事故区間の負荷側健全区
間の切替えと事故区間の切離しを行ない、停電範囲の極
小化を実現でき、もって電力の供給信頼度を向上させる
事故点切離し装置を提供できる。[Effects of the Invention] As described above, according to the present invention, by performing instantaneous determination of an accident section and performing high-speed and automatic remote switch operation, a healthy section associated with the interruption of the distribution line breaker can be obtained. It is possible to provide an accident point separation device that can switch the healthy section on the load side of the accident section and disconnect the accident section without causing unnecessary power failure, minimizing the power failure range, and thereby improving the reliability of power supply. .
第１図は本発明による事故点切離し装置のブロック構成
図、第２図は配電系統を含めた一実施例の構成図、第３
図は本発明の一実施例における設備データファイルの記
憶内容を示す図、第４図は本発明の他の実施例における
手順ファイルの記憶内容を示す図、第５図は従来の装置
例を示す図である。 １……地絡検出手段、２……事故判定手段 ３……手順計算手段、４……制御手段FIG. 1 is a block diagram of an accident point separating apparatus according to the present invention, FIG. 2 is a diagram of an embodiment including a power distribution system, and FIG.
FIG. 4 is a diagram showing the storage contents of an equipment data file in one embodiment of the present invention, FIG. 4 is a diagram showing the storage contents of a procedure file in another embodiment of the present invention, and FIG. FIG. 1 ground fault detection means 2 accident determination means 3 procedure calculation means 4 control means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岩井 昭則 東京都府中市東芝町１ 株式会社東芝府 中工場内 (56)参考文献 特開 平２−27272（ＪＰ，Ａ) 特開 昭61−286767（ＪＰ，Ａ) 電力中央研究所報告，研究報告：Ｔ 86070「配電系統多地点情報による保護 制御方式（その２）」，1987年７月, ｐ．５−21 (58)調査した分野(Int.Cl.7，ＤＢ名) H02H 7/26 H02J 3/04 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akinori Iwai 1 Toshiba-cho, Fuchu-shi, Tokyo Inside the Toshiba Fuchu plant (56) References JP-A-2-27272 (JP, A) JP-A-61-286767 (JP, A) Report from the Central Research Institute of Electric Power Industry, Research report: T86070, "Protection and control method based on multipoint information of distribution system (part 2)", July 1987, p. 5-21 (58) Field surveyed (Int. Cl. 7 , DB name) H02H 7/26 H02J 3/04
Claims (1)
各区分点を有し、前記区分されたいずれかの区間に事故
が発生したとき当該事故区間を分離すると共に、負荷側
健全区間を他の健全配電線に切替える処理を行なう事故
切離し装置において、配電用高圧線から前記高圧線を支
持する支持物への地絡電流を検知して地絡事故の発生を
検出する地絡検出手段と、前記地絡検知手段から通知さ
れる地絡情報を基に当該動作した地絡検出手段が設置さ
れている区間を事故区間と直接判定する事故判定手段
と、制御対象配電線の全区間あるいは特定区間に対する
負荷側健全区間の切替手順を系統状態変化時に計算して
記憶しておく手順計算手段と、配電線しゃ断器がその保
護リレーによってしゃ断する以前に、前記事故判定手段
により直接事故判定された事故区間に対応して前記手順
計算手段に予め記憶されている前記切替手順を用いて、
該当開閉器を操作する制御手段とを備えたことを特徴と
する事故点切離し装置。1. An apparatus according to claim 1, wherein each of the sections has a section point divided into a plurality of sections by a section switch. When an accident occurs in any of the sections, the accident section is separated and a load-side healthy section is separated from the other sections. Ground fault detecting means for detecting the occurrence of a ground fault by detecting a ground fault current from the distribution high-voltage line to the support supporting the high-voltage line, An accident determining means for directly determining a section where the operated ground fault detecting means is installed as an accident section based on the ground fault information notified from the ground fault detecting means; an entire section or a specific section of a control target distribution line; Means for calculating and storing the switching procedure of the load-side healthy section at the time of system state change, and direct determination of an accident by the accident determination means before the distribution line breaker is interrupted by its protection relay. Using the switching procedure which has been previously stored in the steps calculating means in response to the fault section,
An accident point separating apparatus, comprising: a control means for operating the switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02294430A JP3075740B2 (en) | 1990-10-31 | 1990-10-31 | Accident point separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02294430A JP3075740B2 (en) | 1990-10-31 | 1990-10-31 | Accident point separation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04168915A JPH04168915A (en) | 1992-06-17 |
| JP3075740B2 true JP3075740B2 (en) | 2000-08-14 |
Family
ID=17807666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02294430A Expired - Fee Related JP3075740B2 (en) | 1990-10-31 | 1990-10-31 | Accident point separation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3075740B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101883558B1 (en) * | 2016-09-20 | 2018-07-30 | 한국전력공사 | Isolation of faulted section for short-circuit fault in inverter-based remote micro-grid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61286767A (en) * | 1985-06-14 | 1986-12-17 | Fuji Electric Co Ltd | Trouble point detection system in distribution system |
| JPH0227272A (en) * | 1988-07-18 | 1990-01-30 | Kyushu Electric Power Co Inc | Apparatus for detecting earth of transmission/ distribution line |
-
1990
- 1990-10-31 JP JP02294430A patent/JP3075740B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 電力中央研究所報告，研究報告：Ｔ８６０７０「配電系統多地点情報による保護制御方式（その２）」，１９８７年７月，ｐ．５−２１ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04168915A (en) | 1992-06-17 |
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