JP2002369375A - Distribution line supervisory control device - Google Patents
Distribution line supervisory control deviceInfo
- Publication number
- JP2002369375A JP2002369375A JP2001173326A JP2001173326A JP2002369375A JP 2002369375 A JP2002369375 A JP 2002369375A JP 2001173326 A JP2001173326 A JP 2001173326A JP 2001173326 A JP2001173326 A JP 2001173326A JP 2002369375 A JP2002369375 A JP 2002369375A
- Authority
- JP
- Japan
- Prior art keywords
- slave station
- station device
- normally
- distribution line
- switch
- 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.)
- Pending
Links
Classifications
-
- 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
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Landscapes
- Locating Faults (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、配電線監視制御
装置、特に、特別高圧または高圧の配電線を監視制御す
る配電線監視制御装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution line monitoring and control device, and more particularly to a distribution line monitoring and control device for monitoring and controlling a special high-voltage or high-voltage distribution line.
【０００２】[0002]
【従来の技術】図６は、現在国内の電力会社で一般的に
使用されている配電線監視制御装置の構成を示す略線
図、図７は、図６の構成において、配電線事故が発生し
た時の配電線ＣＢおよび開閉器の動作を示すタイムチャ
ート図、図８は、配電線事故時に計算機で実施する事故
復旧処理の手順を示すフローチャートである。図６にお
いて、３０は特別高圧または高圧の配電線、１０は配電
線に接続された配電線ＣＢ、１１〜１５は配電線３０に
適宜の間隔で設置された複数の常閉開閉器、２１は配電
線に設置された連系用の常開開閉器、３１〜３６は上記
各常閉開閉器１１〜１５により区分された配電線の区
間、４１〜４６は各常閉開閉器１１〜１５および常開開
閉器２１に対応して設けられ、後述する計算機と通信を
行なって、各常閉開閉器１１〜１５または常開開閉器２
１の状態を計算機へ送信すると共に、計算機の指令にも
とづいて常閉開閉器１１〜１５または常開開閉器２１の
開閉を制御する子局装置、２は上記各子局装置に通信線
３を介して接続された通信用親局（以下、テレコン親局
という）、１はテレコン親局２に接続され、テレコン親
局２を介して上記各子局装置４１〜４６に制御信号を送
信し、各子局装置へのサイクリックなポーリングを行な
うことにより、上記各開閉器の状態監視を行なう計算機
で、営業所に設置されるものである。2. Description of the Related Art FIG. 6 is a schematic diagram showing a configuration of a distribution line monitoring and control device generally used by a domestic electric power company at present. FIG. 7 shows a configuration of FIG. FIG. 8 is a time chart showing the operation of the distribution line CB and the switch when the operation is performed, and FIG. 8 is a flowchart showing the procedure of an accident restoration process performed by a computer at the time of a distribution line accident. In FIG. 6, reference numeral 30 denotes an extra-high voltage or high-voltage distribution line, 10 denotes a distribution line CB connected to the distribution line, 11 to 15 denote a plurality of normally-closed switches installed at appropriate intervals on the distribution line 30, and 21 denotes a distribution line. Normally-open switches for interconnection provided on distribution lines, 31 to 36 are sections of the distribution line divided by the normally-closed switches 11 to 15, and 41 to 46 are normally-open switches 11 to 15 and Each of the normally-closed switches 11 to 15 or the normally-open switches 2 is provided corresponding to the normally-open switch 21 and communicates with a computer described later.
1 is transmitted to the computer, and the slave station devices that control the opening and closing of the normally-closed switches 11 to 15 or the normally-open switch 21 based on the command of the computer, and 2 connects the communication line 3 to each of the slave station devices. A communication master station (hereinafter referred to as a “telecon master station”) 1 is connected to the telecon master station 2 and transmits a control signal to each of the slave station devices 41 to 46 via the telecon master station 2, A computer that monitors the status of each switch by performing cyclic polling of each slave station device, and is installed in a sales office.
【０００３】次に、従来の配電線監視制御装置の動作に
ついて説明する。まず、配電線３０で事故が発生した場
合の配電線ＣＢ１０および各開閉器の動作について説明
する。区間３４において事故が発生したと仮定して説明
する。配電線事故が発生すると、配電線ＣＢ１０が遮断
し、配電線ＣＢ１０より負荷側区間３１〜３６が停電す
る。停電したことにより、常閉開閉器１１〜１５が図７
（ｂ）〜（ｆ）に示すように開放され、無電圧開放の状
態となる。配電線ＣＢ１０は図７（ａ）に示すように、
遮断後一定時間後（１５秒または６０秒後）に投入さ
れ、区間３１が充電される。区間３１が充電された後一
定時間後（通常７秒後）、図７（ｂ）に示すように、常
閉開閉器１１が投入され区間３２が充電される。常閉開
閉器１１と同様に、区間３２が充電された後一定時間
後、図７（ｃ）に示すように、常閉開閉器１２が投入さ
れ区間３３が充電される。区間３３が充電された後一定
時間後、図７（ｄ）に示すように、常閉開閉器１３が投
入され区間３４が充電されるが、区間３４は事故区間で
あるため、図７（ａ）に示すように、再度配電線ＣＢ１
０が遮断する。常閉開閉器１１、１２は図７（ｂ）
（ｃ）に示すように、再度無電圧開放の状態となるが、
閉開閉器１３は投入後一定時間内に停電が発生したこと
により図７（ｄ）に示すように、開放ロックの状態とな
る。その後、図７（ａ）に示すように、配電線ＣＢ１０
が投入（再々閉路）され、図７（ｂ）（ｃ）に示すよう
に、常閉開閉器１１、１２も上述の再閉路時と同じよう
に一定時間後に順次投入されるが、常閉開閉器１３は開
放ロックの状態であるため投入されない。以上の動作に
より、事故区間より電源側の区間は充電された状態とな
り、事故区間以降の区間は停電した状態となる。Next, the operation of the conventional distribution line monitoring and control device will be described. First, the operation of the distribution line CB10 and each switch when an accident occurs in the distribution line 30 will be described. Description will be made assuming that an accident has occurred in the section 34. When a distribution line accident occurs, the distribution line CB10 is cut off, and the load-side sections 31 to 36 are cut off from the distribution line CB10. As a result of the power failure, the normally closed switches 11 to 15
It is released as shown in (b) to (f), and becomes a state of no-voltage release. The distribution line CB10 is, as shown in FIG.
After a certain period of time (15 seconds or 60 seconds) after the interruption, the section 31 is charged. After a predetermined time (usually 7 seconds) after the section 31 is charged, the normally closed switch 11 is turned on to charge the section 32 as shown in FIG. 7B. As in the case of the normally closed switch 11, after a certain period of time after the section 32 is charged, as shown in FIG. 7C, the normally closed switch 12 is turned on and the section 33 is charged. After a certain period of time after the section 33 has been charged, as shown in FIG. 7D, the normally closed switch 13 is turned on to charge the section 34. However, since the section 34 is an accident section, FIG. ), The distribution line CB1
0 blocks. The normally closed switches 11 and 12 are shown in FIG.
As shown in (c), the state is again in a no-voltage release state,
When a power failure occurs within a certain time after the closing switch 13 is turned on, the closing switch 13 is in an open lock state as shown in FIG. 7D. Thereafter, as shown in FIG.
7 (b) and (c), the normally-closed switches 11, 12 are also sequentially closed after a certain period of time, as in the above-described re-closed state. The container 13 is not opened because it is in the open lock state. By the above operation, the section on the power supply side from the accident section is in a charged state, and the sections after the accident section are in a power outage state.
【０００４】次に、計算機による事故復旧処理について
図８のフローチャートにもとづいて説明する。ステップ
Ｓ１での配電線ＣＢ１０の再々閉路後、ステップＳ２で
事故区間より電源側の子局装置４３を選択ポーリング
し、常閉開閉器１３が開放ロック状態であることを確認
して、ステップＳ３で区間３４を事故区間と判定する。
その後、ステップＳ４で事故区間判定後融通計算を行な
うことにより、事故区間以外の停電区間に対する復旧手
順（開閉器操作手順）を作成し、ステップＳ５で制御操
作を実行する。図６の例では、連系用の常開開閉器２１
の投入、常閉開閉器１５の投入、常閉開閉器１４の開放
ロックという復旧手順を作成、実行することにより停電
区間３５、３６が充電される。Next, an accident recovery process by a computer will be described with reference to a flowchart of FIG. After the re-closing of the distribution line CB10 in step S1, the slave station device 43 on the power supply side is selectively polled from the accident section in step S2, and it is confirmed that the normally-closed switch 13 is in the open-locked state. The section 34 is determined to be an accident section.
Thereafter, a recovery procedure (switch operation procedure) for a power failure section other than the failure section is created by performing an accommodation calculation after the failure section determination in step S4, and a control operation is executed in step S5. In the example of FIG. 6, the normally open switch 21 for interconnection is
The power failure sections 35 and 36 are charged by creating and executing a recovery procedure of turning on the normally closed switch 15, turning on the normally closed switch 15, and opening and closing the normally closed switch 14.
【０００５】[0005]
【発明が解決しようとする課題】従来の配電線監視制御
装置は以上のように構成されているため、事故区間以外
の停電区間への復旧操作が配電線ＣＢ１０の再々閉路後
となり、融通送電されるまでの停電時間が長く、停電範
囲が広いという問題点があった。Since the conventional distribution line monitoring and control apparatus is configured as described above, the restoration operation to the power failure section other than the accident section is performed after the distribution line CB10 is reclosed again and the power transmission and reception is performed. There is a problem that the power outage time until the power outage is long and the power outage range is wide.
【０００６】この発明は、上記のような問題点を解決す
るためになされたもので、配電系統の事故発生時に事故
区間以外の区間を無停電または瞬時の停電で切替えるこ
とにより、停電範囲、停電時間を極小化することができ
る配電線監視制御装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. When an accident occurs in a power distribution system, sections other than the accident section are switched over without interruption or instantaneous interruption, so that the range of the interruption and the interruption An object of the present invention is to provide a distribution line monitoring and control device capable of minimizing time.
【０００７】[0007]
【課題を解決するための手段】この発明に係る配電線監
視制御装置は、配電線に適宜の間隔で設置された複数の
常閉開閉器および連系用の常開開閉器と、各開閉器にそ
れぞれ対応して設けられ、対応する開閉器の状態を検知
すると共に、開閉制御を行なう子局装置と、各子局装置
に通信線を介して接続され、各子局装置へのサイクリッ
クなポーリングを行なうことにより、各開閉器の状態監
視を行なう通信用親局と、通信用親局に接続され、通信
用親局を介して各子局装置に各開閉器の開閉用制御信号
を送信する計算機とを有する配電線監視制御装置におい
て、各開閉器内またはその近傍にそれぞれ電圧、電流セ
ンサを設け、そのデータを対応する子局装置に与えるこ
とにより、地絡事故発生時の地絡方向を判定し得るよう
にすると共に、所定の子局装置とその電源側に隣接する
子局装置との地絡方向データが異なる場合には、所定の
子局装置を事故区間の負荷側と判定し、所定の子局装置
とその負荷側に隣接する子局装置との地絡方向データが
異なる場合には、所定の子局装置を事故区間の電源側と
判定して所定の子局装置に対応する常閉開閉器に開放指
令を発するようにしたものである。SUMMARY OF THE INVENTION A distribution line monitoring and control apparatus according to the present invention comprises a plurality of normally closed switches and interconnection normally open switches installed at appropriate intervals on a distribution line, and each of the switches. And a slave station device that detects the state of the corresponding switch and controls the opening and closing of the switch, and is connected to each slave station device via a communication line, and a cyclic connection to each slave station device is provided. By performing polling, a communication master station for monitoring the status of each switch and a communication master station are connected to each other, and a switch control signal for each switch is transmitted to each slave station device via the communication master station. In a distribution line monitoring and control device having a computer, a voltage and current sensor are provided in or near each switch, and the data is given to the corresponding slave station device, thereby providing a ground fault direction when a ground fault occurs. To be able to determine If the ground fault direction data of the slave station device and the slave station device adjacent to the power supply side are different, the predetermined slave station device is determined to be the load side of the accident section, and the predetermined slave station device and its load side are determined. When the ground fault direction data differs from the slave station device adjacent to the slave station device, the predetermined slave station device is determined to be the power source side in the accident section, and an open command is issued to the normally closed switch corresponding to the predetermined slave station device. It is like that.
【０００８】この発明に係る配電線監視制御装置は、ま
た、連系用の常開開閉器に対応する子局装置によって各
常閉開閉器に対応する子局装置の通信内容を傍受し得る
ようにし、各常閉開閉器に対応するいずれかの子局装置
が地絡事故を検出した場合には、地絡事故発生と判定
し、連系用の常開開閉器に対して投入指令を発するよう
にしたものである。[0008] The distribution line monitoring and control device according to the present invention can also intercept the communication contents of the slave station devices corresponding to each normally closed switch by the slave station device corresponding to the normally open switch for interconnection. If any of the slave station devices corresponding to each normally-closed switch detects a ground fault, it is determined that a ground fault has occurred and a closing command is issued to the normally-open switch for interconnection. It was done.
【０００９】この発明に係る配電線監視制御装置は、ま
た、配電線に適宜の間隔で設置された複数の常閉開閉器
および連系用の常開開閉器と、各開閉器にそれぞれ対応
して設けられ、対応する開閉器の状態を検知すると共
に、開閉制御を行なう子局装置と、各子局装置に通信線
を介して接続され、各子局装置へのサイクリックなポー
リングを行なうことにより、各開閉器の状態監視を行な
う通信用親局と、通信用親局に接続され、通信用親局を
介して各子局装置に各開閉器の開閉用制御信号を送信す
る計算機とを有する配電線監視制御装置において、各開
閉器内またはその近傍にそれぞれ電圧、電流センサを設
け、そのデータを対応する子局装置に与えることによ
り、地絡事故発生時の過電流を検出し得るようにすると
共に、所定の子局装置が過電流を検出せず、その電源側
に隣接する子局装置が過電流を検出した場合には、所定
の子局装置を短絡事故区間の負荷側と判定し、所定の子
局装置に対応する常閉開閉器に開放指令を発するように
したものである。The distribution line monitoring and control device according to the present invention also corresponds to a plurality of normally closed switches and interconnected normally open switches installed at appropriate intervals in the distribution line, and to each of the switches. A slave station device that detects the state of a corresponding switch and controls switching, and is connected to each slave station device via a communication line to perform cyclic polling of each slave station device. A communication master station that monitors the status of each switch, and a computer that is connected to the communication master station and transmits a switching control signal for each switch to each slave station device via the communication master station. In the distribution line monitoring and control device having, a voltage and current sensor are provided in or near each switch, and the data is supplied to the corresponding slave station device, so that an overcurrent at the time of a ground fault accident can be detected. And a predetermined slave station device When the overcurrent is not detected and the slave station device adjacent to the power supply side detects the overcurrent, the predetermined slave station device is determined to be the load side of the short-circuit accident section and corresponds to the predetermined slave station device. An open command is issued to the normally closed switch.
【００１０】この発明に係る配電線監視制御装置は、ま
た、連系用の常開開閉器が複数台設けられ、複数の配電
線が連系可能に接続されると共に、常開開閉器の片側電
圧無しの状態時または地絡事故発生時に投入される連系
用の常開開閉器を１台のみ事前に指定するようにしたも
のである。[0010] The distribution line monitoring and control apparatus according to the present invention is also provided with a plurality of normally open switches for interconnection, a plurality of distribution lines are connected so as to be interconnected, and one side of the normally open switch. Only one normally-open switch for interconnection to be turned on when there is no voltage or when a ground fault occurs is specified in advance.
【００１１】この発明に係る配電線監視制御装置は、ま
た、投入される連系用の常開開閉器が、手動で指定され
るようにしたものである。[0011] In the distribution line monitoring and control apparatus according to the present invention, the normally open switch for connection to be connected is manually designated.
【００１２】この発明に係る配電線監視制御装置は、ま
た、連系可能に接続された各配電線の数時間後までの負
荷を計算機で予測し、予測負荷が最も小さい配電線の連
系用常開開閉器を投入用として指定するようにしたもの
である。The distribution line monitoring and control apparatus according to the present invention also uses a computer to predict the load up to several hours later on each of the distribution lines connected so as to be able to be interconnected, and to interconnect the distribution lines with the smallest predicted load. The normally open switch is designated for closing.
【００１３】[0013]
【発明の実施の形態】実施の形態１．以下、この発明の
実施の形態１を図にもとづいて説明する。図１は、実施
の形態１の構成を示す略線図である。この図において、
３０は特別高圧または高圧の配電線、１０は配電線に接
続された配電線ＣＢ、１１〜１５は配電線３０に適宜の
間隔で設置された複数の常閉開閉器、２１は配電線に設
置された連系用の常開開閉器、３１〜３６は上記各常閉
開閉器１１〜１５により区分された配電線の区間、４１
〜４６は各常閉開閉器１１〜１５および常開開閉器２１
に対応して設けられ、後述する計算機と通信を行なっ
て、各常閉開閉器１１〜１５または常開開閉器２１の状
態を計算機へ送信すると共に、計算機の指令にもとづい
て常閉開閉器１１〜１５または常開開閉器２１の開閉を
制御する子局装置、２は上記各子局装置に通信線３を介
して接続された通信用親局（以下、テレコン親局とい
う）、１はテレコン親局２に接続され、テレコン親局２
を介して上記各子局装置４１〜４６に制御信号を送信
し、各子局装置へのサイクリックなポーリングを行なう
ことにより、上記各開閉器の状態監視を行なう計算機
で、営業所に設置されるものである。５１〜５５は上記
各常閉開閉器１１〜１５内、または常開開閉器２１内あ
るいは近傍にそれぞれ設置され、配電線３０の電流、電
圧を計測するセンサである。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram illustrating the configuration of the first embodiment. In this figure,
Reference numeral 30 denotes a special high-voltage or high-voltage distribution line, 10 denotes a distribution line CB connected to the distribution line, 11 to 15 a plurality of normally-closed switches installed at appropriate intervals on the distribution line 30, and 21 denotes a distribution line. The normally-open switches 31-36 for the interconnection are the sections of the distribution line divided by the normally-closed switches 11-15, 41
Are normally open switches 11 to 15 and normally open switches 21
And communicates with a computer to be described later to transmit the status of each of the normally closed switches 11 to 15 or the normally open switch 21 to the computer, and based on a command from the computer, the normally closed switch 11. 15 or a slave station device that controls the opening and closing of the normally open switch 21. Reference numeral 2 denotes a communication master station (hereinafter referred to as a “telecon master station”) connected to each slave station device via a communication line 3. Connected to Master Station 2, Telecon Master Station 2
A control signal is transmitted to each of the slave station devices 41 to 46 through the controller, and the polling of each of the slave station devices is performed. Things. Reference numerals 51 to 55 are sensors installed in the normally closed switches 11 to 15 or in or near the normally opened switch 21 to measure the current and voltage of the distribution line 30.
【００１４】次に、実施の形態１の動作について説明す
る。計算機１は配電系統の接続状態から電源側子局装置
と負荷側子局装置の組み合わせデータおよび各子局装置
の配電系統上での位置関係（最電源側、末端側、それ以
外）のデータを作成し、あらかじめ各子局装置へ配信し
ておく。図２（ａ）は、図１の配電系統状態の時に計算
機１から各子局装置へ配信されるデータを示したもので
あり、相手局１のデータは自局の電源側子局装置を指定
するものであり、相手局２は自局の負荷側子局装置を指
定するものとする。テレコン親局２は通信線３を介して
常時各子局装置をサイクリックにポーリングしており、
子局装置はテレコン親局２がポーリングする際のアドレ
スデータをチェックし、自局アドレスでポーリングされ
た場合に、自局で監視している常閉開閉器または常開開
閉器の状態データをテレコン親局２へ返信する。上記テ
レコン親局２と各子局装置との通信方法に加え、計算機
１から各子局装置に対し、図２（ａ）に示すように、相
手局のデータを配信しておき、各子局装置はテレコン親
局２が相手局をポーリングしている際には、相手局が返
信するデータ内容を傍受してチェックすることとする。
例えば、子局装置４２は自局アドレスでポーリングされ
た場合は、自局で保有している常閉開閉器１２のデータ
をテレコン親局２へ返信し、子局装置４１または子局装
置４３がポーリングされている場合は、子局装置４１ま
たは子局装置４３がテレコン親局２へ返信するデータを
傍受し、自局のデータと比較することとする。Next, the operation of the first embodiment will be described. The computer 1 obtains, from the connection state of the distribution system, the combination data of the power supply side slave station device and the load side slave station device and the data of the positional relationship (most power supply side, terminal side, other than that) of each slave station device on the distribution system. It is created and distributed to each slave station device in advance. FIG. 2A shows data distributed from the computer 1 to each slave station device in the state of the power distribution system of FIG. 1, and the data of the partner station 1 designates the power supply side slave station device of its own station. It is assumed that the partner station 2 specifies its own load side slave station device. The tele-control master station 2 constantly polls each slave station device via the communication line 3 cyclically.
The slave station device checks the address data at the time of polling by the telecon master station 2, and when polled by the own station address, the status data of the normally-closed switch or normally-open switch monitored by the self-station is telecon- trolled. Reply to master station 2. As shown in FIG. 2 (a), in addition to the communication method between the telecon master station 2 and each slave station device, the computer 1 distributes the data of the partner station to each slave station device as shown in FIG. The device intercepts and checks the data content returned by the partner station when the telecon master station 2 is polling the partner station.
For example, when the slave station device 42 is polled by its own address, the slave station device 42 returns the data of the normally-closed switch 12 held in its own station to the telecon master station 2, and the slave station device 41 or the slave station device 43 transmits the data. If polling has been performed, the slave station device 41 or the slave station device 43 intercepts data returned to the telecon master station 2 and compares the data with the data of the own station.
【００１５】今、配電系統に地絡事故が発生した場合、
子局装置はセンサで検出した電流、電圧から零相電圧、
零相電流を算出し、零相電流と零相電圧の位相から地絡
方向を判定する。各子局装置は図２（ｂ）に示すよう
に、自局の地絡方向データと相手局１のデータで示され
る子局装置の地絡方向データとが異なっている場合に
は、自局は事故区間の負荷側に位置するものと判断し、
自局で監視制御する常閉開閉器に対し開放指令１を出力
する。開放指令１は常閉開閉器を即時に開放する指令で
あり、後述する開放指令２は一定時間後に開放する指令
である。また、相手局２のデータで示される子局装置の
地絡方向データと自局の地絡方向データとが異なる場合
は、自局を事故区間の電源側に位置するものと判断し、
常閉開閉器に対し開放指令１を出力する。更に、自局が
最電源側と指定されている子局装置で地絡方向が電源側
と判定された場合は、自局を事故区間の負荷側と判断し
て開放指令１を出力し、自局が末端と指定されている場
合に、地絡方向が負荷側の場合は、自局を事故区間の電
源側と判断して開放指令１を出力するものとする。Now, if a ground fault occurs in the distribution system,
The slave station device calculates the zero-phase voltage from the current and voltage detected by the sensor.
The zero-phase current is calculated, and the ground fault direction is determined from the phases of the zero-phase current and the zero-phase voltage. As shown in FIG. 2B, when each of the slave station devices has different ground fault direction data of its own station and the ground fault direction data of the slave station device indicated by the data of the partner station 1, the slave station device has its own station. Is determined to be located on the load side of the accident section,
An open command 1 is output to a normally closed switch monitored and controlled by the own station. The opening command 1 is a command for immediately opening the normally closed switch, and an opening command 2 described later is a command for opening after a certain time. Also, when the ground fault direction data of the slave station device indicated by the data of the partner station 2 and the ground fault direction data of the own station are different, it is determined that the own station is located on the power supply side in the accident section,
An open command 1 is output to the normally closed switch. Further, when the ground fault direction is determined to be the power supply side in the slave station apparatus designated as the most power supply side, the own station is determined to be the load side in the accident section, and the release command 1 is output. If the station is designated as the terminal, and if the ground fault direction is on the load side, it is determined that the own station is on the power supply side in the accident section and the release command 1 is output.
【００１６】図２（ｂ）の例では、子局装置４３が事故
区間の電源側と判断され、子局装置４４が事故区間の負
荷側と判断され、常閉開閉器１３と常閉開閉器１４に対
し開放指令１が出力される。常閉開閉器１３、１４が開
放されたことにより、事故区間３４と事故区間の負荷側
区間３５、３６が停電となる。この時、子局装置４５は
電源が無くなるため常閉開閉器１５に対し開放指令２を
出力する。常閉開閉器１５は開放指令を受けても直ちに
は開放せず、一定時間（例えば１秒）投入状態を継続す
る。また、区間３６が停電したことにより、子局装置４
６は常開開閉器２１が切状態の時に片側（区間３６側）
の電源が無くなったことを検出するため、常開開閉器２
１の投入指令を出力する。常閉開閉器１５は投入状態で
あるため、常開開閉器２１が投入されることにより、区
間３５と３６は充電状態となる。以上のように、常閉開
閉器１３、１４の開放と常開開閉器２１の投入がほとん
ど同時に行なわれるため、事故区間の負荷側区間３５と
３６は瞬時の停電で復旧される。また、事故区間３４が
瞬時に系統から切り離されるため、配電線ＣＢ１０は遮
断せず、事故区間より電源側の区間３１〜３３を停電さ
せずに事故区間を除去することが出来るようになる。In the example of FIG. 2B, the slave station device 43 is determined to be the power source side in the accident section, the slave station device 44 is determined to be the load side in the accident section, and the normally closed switch 13 and the normally closed switch 13 are determined. 14, an open command 1 is output. Since the normally closed switches 13 and 14 are opened, a power failure occurs in the accident section 34 and the load sections 35 and 36 of the accident section. At this time, the slave station device 45 outputs the open command 2 to the normally-closed switch 15 because the power supply is lost. The normally closed switch 15 does not open immediately after receiving the opening command, but keeps the closing state for a certain time (for example, one second). Further, the power failure in the section 36 causes the slave station device 4
6 is one side (section 36 side) when the normally open switch 21 is in the off state.
Normally open switch 2 to detect that the power supply of
1 is output. Since the normally-closed switch 15 is in the closed state, the sections 35 and 36 are charged when the normally-open switch 21 is closed. As described above, since the opening of the normally closed switches 13 and 14 and the closing of the normally opened switch 21 are performed almost simultaneously, the load side sections 35 and 36 in the accident section are restored by an instantaneous power failure. Further, since the accident section 34 is instantaneously separated from the system, the distribution line CB10 is not interrupted, and the accident section can be removed without stopping the sections 31 to 33 on the power supply side from the accident section.
【００１７】実施の形態２．次に、この発明の実施の形
態２について説明する。上述した実施の形態１では、切
状態の常開開閉器２１の投入条件を片側の電圧が無くな
った場合としていたため、事故区間の電源側開閉器また
は負荷側開閉器が開放された後でしか連系開閉器２１が
投入されない。従って、事故区間の負荷側区間は瞬時の
停電となったが、図３（ａ）に示すように、切状態開閉
器２１を監視制御している子局装置４６に対し、相手局
３で示すように、両側配電線の各子局装置４１〜４５の
通信内容を傍受するようにし、いずれかの子局装置で地
絡事故を検出している場合には、常開開閉器２１に対し
投入指令を出力するようにすれば、事故区間の電源側開
閉器または事故区間の負荷側開閉器が開放する前に、連
系開閉器２１を投入することができ、事故区間以外は無
停電で事故復旧することが可能となる。図１の系統で、
各子局装置のデータが図３（ｂ）のようになった場合、
常開開閉器２１の投入と常閉開閉器１３、１４の開放が
ほとんど同時に実施されるため、区間３５と３６は無停
電で切替えられ復旧される。Embodiment 2 FIG. Next, a second embodiment of the present invention will be described. In the above-described first embodiment, since the closing condition of the normally open switch 21 in the off state is the case where the voltage on one side is lost, only after the power switch or the load switch in the accident section is opened. The interconnection switch 21 is not turned on. Therefore, the load side section of the accident section was instantaneously interrupted, but as shown in FIG. 3A, the slave station apparatus 46 monitoring and controlling the off-state switch 21 is indicated by the partner station 3. As described above, the communication content of each of the slave station devices 41 to 45 of the two-sided distribution line is intercepted, and when any of the slave station devices detects a ground fault, a closing command is issued to the normally open switch 21. If the power is output, the interconnecting switch 21 can be turned on before the power-side switch in the accident section or the load-side switch in the accident section is opened, and the accident is recovered without interruption in other than the accident section. It becomes possible. In the system of FIG.
When the data of each slave station device is as shown in FIG.
Since the normally-open switch 21 is turned on and the normally-closed switches 13 and 14 are opened almost simultaneously, the sections 35 and 36 are switched without interruption and restored.
【００１８】実施の形態３．次に、この発明の実施の形
態３について説明する。上述した実施の形態１および２
では地絡事故について述べたが、子局装置に過電流検出
機能を設け、図４（ｂ）に示すように、自局および相手
局１のデータで示される子局装置の過電流検出有無を比
較し、相手局１が過電流を検出し、自局が過電流を検出
していない場合は事故区間の負荷側と判定し、常閉開閉
器を開放指令１にて開放することにより、短絡事故の場
合に事故区間から負荷側の区間を瞬時停電で復旧するこ
とが可能となる。図４（ｂ）の場合は、子局装置４４が
上述のケースに該当して、事故区間の負荷側と判定さ
れ、常閉開閉器１４を開放することにより、区間３５と
３６が停電し、子局装置４６が片側電圧を判定し常開開
閉器２１を投入することにより、区間３５と３６が充電
されることになる。Embodiment 3 Next, a third embodiment of the present invention will be described. Embodiments 1 and 2 described above
In the description of the ground fault, the slave station device is provided with an overcurrent detection function, and as shown in FIG. 4 (b), the presence or absence of overcurrent detection of the slave station device indicated by the data of the own station and the counter station 1 is determined. In comparison, the partner station 1 detects an overcurrent, and if the own station does not detect an overcurrent, it is determined that the load is in the accident section, and the normally closed switch is opened by the open command 1 to short-circuit. In the case of an accident, the section on the load side from the accident section can be restored by an instantaneous power failure. In the case of FIG. 4B, the slave station device 44 corresponds to the above-described case, and is determined to be on the load side in the accident section, and by opening the normally closed switch 14, the sections 35 and 36 lose power, When the slave station device 46 determines the one-sided voltage and turns on the normally open switch 21, the sections 35 and 36 are charged.
【００１９】実施の形態４．次に、この発明の実施の形
態４について説明する。上述した実施の形態１〜３は連
系開閉器が１台だけの場合について述べたが、図５に２
１、２２で示すように、連系開閉器が複数ある場合は、
複数の連系開閉器２１、２２が共に投入され配電線３０
がループ状態となる場合がある。そのため、片側電源判
定時または地絡事故判定時に投入する連系開閉器を１台
のみオペレータが手動で事前に指定しておくことによ
り、配電線３０のループが発生することを防止できると
共に、指定する連系開閉器を相手側配電線負荷の小さい
開閉器とすることで系統切替え後に相手側配電線で過負
荷が発生することを防止できる。Embodiment 4 Next, a fourth embodiment of the present invention will be described. Embodiments 1 to 3 described above have dealt with the case where there is only one interconnection switch.
As shown by 1 and 22, when there are a plurality of interconnection switches,
A plurality of interconnection switches 21 and 22 are turned on together and the distribution line 30
May be in a loop state. Therefore, the operator can manually specify in advance only one interconnecting switch to be turned on at the time of one-side power supply determination or ground fault accident determination, thereby preventing a loop of the distribution line 30 from occurring and at the same time specifying By using a switch with a small load on the other party's distribution line, the overload on the other party's distribution line after system switching can be prevented.
【００２０】実施の形態５．次に、この発明の実施の形
態５について説明する。上述した実施の形態４では、片
側電源判定時または地絡事故判定時に投入する連系開閉
器をオペレータが手動で事前に指定できるようにした
が、計算機にて相手側配電線の数時間後までの負荷を予
測し、最も負荷の小さい配電線と連系している連系開閉
器を投入対象開閉器として指定することにより、さらに
信頼性を向上させることができる。Embodiment 5 Next, a fifth embodiment of the present invention will be described. In the above-described fourth embodiment, the operator can manually specify in advance the interconnection switch to be turned on at the time of one-side power supply determination or ground fault accident determination. By predicting the load and designating the interconnection switch interconnected to the distribution line with the smallest load as the switch to be closed, the reliability can be further improved.
【００２１】[0021]
【発明の効果】この発明に係る配電線監視制御装置は、
配電線に適宜の間隔で設置された複数の常閉開閉器およ
び連系用の常開開閉器と、各開閉器にそれぞれ対応して
設けられ、対応する開閉器の状態を検知すると共に、開
閉制御を行なう子局装置と、各子局装置に通信線を介し
て接続され、各子局装置へのサイクリックなポーリング
を行なうことにより、各開閉器の状態監視を行なう通信
用親局と、通信用親局に接続され、通信用親局を介して
各子局装置に各開閉器の開閉用制御信号を送信する計算
機とを有する配電線監視制御装置において、各開閉器内
またはその近傍にそれぞれ電圧、電流センサを設け、そ
のデータを対応する子局装置に与えることにより、地絡
事故発生時の地絡方向を判定し得るようにすると共に、
所定の子局装置とその電源側に隣接する子局装置との地
絡方向データが異なる場合には、所定の子局装置を事故
区間の負荷側と判定し、所定の子局装置とその負荷側に
隣接する子局装置との地絡方向データが異なる場合に
は、所定の子局装置を事故区間の電源側と判定して所定
の子局装置に対応する常閉開閉器に開放指令を発するよ
うにしたため、配電系統の事故発生時に、事故区間が瞬
時に系統から切り離される結果、配電線ＣＢは遮断せ
ず、従って事故区間から電源側の区間を停電させること
なく事故区間を除去し、事故区間から負荷側の区間は瞬
時の停電で復旧される。The distribution line monitoring and control device according to the present invention is:
A plurality of normally-closed switches and normally-open switches for interconnection, which are installed at appropriate intervals on the distribution line, and each switch is provided in correspondence with each switch. A slave station device that performs control, a communication master station that is connected to each slave station device via a communication line, performs cyclic polling of each slave station device, and monitors the state of each switch; In a distribution line monitoring and control device having a computer connected to the communication master station and transmitting a control signal for switching each switch to each slave station device via the communication master station, in or near each switch. By providing voltage and current sensors, respectively, and providing the data to the corresponding slave station device, it is possible to determine the ground fault direction at the time of the ground fault accident,
When the ground fault direction data of the predetermined slave station device and the ground fault direction data of the slave station device adjacent to the power supply side are different, the predetermined slave station device is determined as the load side of the accident section, and the predetermined slave station device and its load are determined. If the ground fault direction data with the slave station device adjacent to the side is different, the predetermined slave station device is determined to be the power source side in the accident section, and an open command is issued to the normally closed switch corresponding to the predetermined slave station device. As a result, when an accident occurs in the distribution system, the accident section is instantaneously disconnected from the system. As a result, the distribution line CB is not interrupted, and thus the accident section is removed from the accident section without interrupting the power supply side section. The section on the load side from the accident section is restored with an instantaneous power failure.
【００２２】また、連系用の常開開閉器に対応する子局
装置によって各常閉開閉器に対応する子局装置の通信内
容を傍受し得るようにし、各常閉開閉器に対応するいず
れかの子局装置が地絡事故を検出した場合には、地絡事
故発生と判定し、連系用の常開開閉器に対して投入指令
を発するようにしたため、事故区間以外は無停電で事故
復旧することが可能となる。Further, the communication contents of the slave station devices corresponding to the normally-closed switches can be intercepted by the slave station devices corresponding to the normally-open switches for interconnection. If any of the slave units detected a ground fault, it was determined that a ground fault had occurred, and a turn-on command was issued to the normally open switch for interconnection. It is possible to do.
【００２３】また、配電線に適宜の間隔で設置された複
数の常閉開閉器および連系用の常開開閉器と、各開閉器
にそれぞれ対応して設けられ、対応する開閉器の状態を
検知すると共に、開閉制御を行なう子局装置と、各子局
装置に通信線を介して接続され、各子局装置へのサイク
リックなポーリングを行なうことにより、各開閉器の状
態監視を行なう通信用親局と、通信用親局に接続され、
通信用親局を介して各子局装置に各開閉器の開閉用制御
信号を送信する計算機とを有する配電線監視制御装置に
おいて、各開閉器内またはその近傍にそれぞれ電圧、電
流センサを設け、そのデータを対応する子局装置に与え
ることにより、地絡事故発生時の過電流を検出し得るよ
うにすると共に、所定の子局装置が過電流を検出せず、
その電源側に隣接する子局装置が過電流を検出した場合
には、所定の子局装置を短絡事故区間の負荷側と判定
し、所定の子局装置に対応する常閉開閉器に開放指令を
発するようにしたため、短絡事故の場合に、事故区間か
ら負荷側の区間を瞬時停電で復旧することが可能とな
る。Also, a plurality of normally-closed switches and normally-open switches for interconnection provided at appropriate intervals on the distribution line, and a state of the corresponding switches provided respectively corresponding to the respective switches. A slave station device that performs detection and switching control, and a communication that is connected to each slave station device via a communication line and that performs cyclic polling of each slave station device to monitor the state of each switch. Connected to the communication master station and the communication master station,
In a distribution line monitoring and control device having a computer that transmits a switching control signal for each switch to each slave station device via the communication master station, a voltage and current sensor are provided in or near each switch, By providing the data to the corresponding slave station device, it is possible to detect the overcurrent at the time of the ground fault occurrence, and the predetermined slave station device does not detect the overcurrent,
If the slave station device adjacent to the power supply side detects an overcurrent, the predetermined slave station device is determined to be the load side in the short-circuit accident section, and an open command is issued to the normally closed switch corresponding to the predetermined slave station device. Therefore, in the case of a short circuit accident, the section on the load side from the accident section can be restored by an instantaneous power failure.
【００２４】また、連系用の常開開閉器が複数台設けら
れ、複数の配電線が連系可能に接続されると共に、常開
開閉器の片側電圧無しの状態時または地絡事故発生時に
投入される連系用の常開開閉器を１台のみ事前に指定す
るようにしたため、配電線のループが発生することを防
止できると共に、指定する連系用開閉器を相手側配電線
負荷の小さい開閉器とすることで、系統切替え後に相手
側配電線で過負荷が発生することを防止できる。A plurality of normally-open switches for interconnection are provided, and a plurality of distribution lines are connected so as to be able to be interconnected, and when there is no voltage on one side of the normally-open switches or when a ground fault occurs. Since only one normally-open switch for interconnection is specified in advance, it is possible to prevent the occurrence of loops in the distribution line, and to specify the specified interconnection switch with the load on the mating distribution line. By using a small switch, it is possible to prevent an overload from occurring in the partner distribution line after system switching.
【００２５】また、連系可能に接続された各配電線の数
時間後までの負荷を計算機で予測し、予測負荷が最も小
さい配電線の連系用常開開閉器を投入用として指定する
ようにしたため、更に信頼性を向上させることができ
る。Also, the load of each distribution line connected so as to be interconnected up to several hours later is predicted by a computer, and the normally open switch for interconnection of the distribution line having the smallest predicted load is designated as the input. Therefore, the reliability can be further improved.
【図１】 この発明の実施の形態１の構成を示す略線図
である。FIG. 1 is a schematic diagram showing a configuration of a first embodiment of the present invention.
【図２】 図１の配電系統状態の時に計算機から各子局
装置へ配信されるデータを示した図表である。FIG. 2 is a table showing data distributed from a computer to each slave station device in the state of the distribution system shown in FIG. 1;
【図３】 この発明の実施の形態２において、各子局装
置へ配信されるデータを示した図表である。FIG. 3 is a table showing data distributed to each slave station device according to the second embodiment of the present invention.
【図４】 この発明の実施の形態３において、各子局装
置へ配信されるデータを示した図表である。FIG. 4 is a table showing data distributed to each slave station device in Embodiment 3 of the present invention.
【図５】 この発明の実施の形態４の構成を示す略線図
である。FIG. 5 is a schematic diagram showing a configuration of a fourth embodiment of the present invention.
【図６】 従来の配電線監視制御装置の構成を示す略線
図である。FIG. 6 is a schematic diagram illustrating a configuration of a conventional distribution line monitoring and control device.
【図７】 図６の構成で配電線事故が発生した時の配電
線ＣＢおよび開閉器の動作を示すタイムチャート図であ
る。7 is a time chart showing operations of the distribution line CB and the switch when a distribution line accident occurs in the configuration of FIG. 6;
【図８】 配電線事故時に計算機で実施する事故復旧処
理の手順を示すフローチャートである。FIG. 8 is a flowchart illustrating a procedure of an accident restoration process performed by a computer when a distribution line accident occurs.
１ 計算機、２ テレコン親局、３ 通信線、１０ 配
電線ＣＢ、１１〜１５ 常閉開閉器、２１，２２ 常開
開閉器、３０ 配電線、３１〜３６ 配電線の区間、４
１〜４７ 子局装置、５１〜５５ センサ。1 Computer, 2 Telecom master station, 3 Communication line, 10 Distribution line CB, 11-15 Normally closed switch, 21, 22 Normally open switch, 30 Distribution line, 31-36 Distribution line section, 4
1 to 47 slave station devices, 51 to 55 sensors.
Claims (6)
常閉開閉器および連系用の常開開閉器と、各開閉器にそ
れぞれ対応して設けられ、対応する開閉器の状態を検知
すると共に、開閉制御を行なう子局装置と、上記各子局
装置に通信線を介して接続され、上記各子局装置へのサ
イクリックなポーリングを行なうことにより、上記各開
閉器の状態監視を行なう通信用親局と、上記通信用親局
に接続され、上記通信用親局を介して上記各子局装置に
上記各開閉器の開閉用制御信号を送信する計算機とを有
する配電線監視制御装置において、上記各開閉器内また
はその近傍にそれぞれ電圧、電流センサを設け、そのデ
ータを対応する子局装置に与えることにより、地絡事故
発生時の地絡方向を判定し得るようにすると共に、所定
の子局装置とその電源側に隣接する子局装置との地絡方
向データが異なる場合には、所定の子局装置を事故区間
の負荷側と判定し、所定の子局装置とその負荷側に隣接
する子局装置との地絡方向データが異なる場合には、所
定の子局装置を事故区間の電源側と判定して所定の子局
装置に対応する常閉開閉器に開放指令を発するようにし
たことを特徴とする配電線監視制御装置。1. A plurality of normally-closed switches and normally-open switches for interconnection provided at appropriate intervals in a distribution line, and a state of the corresponding switches provided for each of the switches. A slave station device that performs detection and switching control and is connected to each of the slave station devices via a communication line, and performs cyclic polling of each of the slave station devices, thereby monitoring the state of each of the switches. And a computer connected to the master station for communication and transmitting a control signal for opening and closing each switch to each slave station device via the master station for communication. In the control device, a voltage and current sensor are provided in or near each of the switches, and the data is provided to the corresponding slave station device, so that the ground fault direction at the time of the ground fault accident can be determined. Together with a predetermined slave station device and its power If the ground fault direction data of the slave station device adjacent to the source side is different, the predetermined slave station device is determined to be the load side of the accident section, and the predetermined slave station device and the slave station device adjacent to the load side are determined. When the ground fault direction data differs from the above, the predetermined slave station device is determined to be the power source side in the accident section, and an open command is issued to the normally closed switch corresponding to the predetermined slave station device. And distribution line monitoring and control equipment.
によって各常閉開閉器に対応する子局装置の通信内容を
傍受し得るようにし、各常閉開閉器に対応するいずれか
の子局装置が地絡事故を検出した場合には、地絡事故発
生と判定し、上記連系用の常開開閉器に対して投入指令
を発するようにしたことを特徴とする請求項１記載の配
電線監視制御装置。2. The communication contents of a slave station device corresponding to each normally closed switch can be intercepted by a slave station device corresponding to a normally open switch for interconnection, and a slave station corresponding to each normally closed switch can be intercepted. 2. The apparatus according to claim 1, wherein when the slave station device detects a ground fault, it is determined that a ground fault has occurred, and a closing command is issued to the normally open switch for interconnection. Distribution line monitoring and control equipment.
常閉開閉器および連系用の常開開閉器と、各開閉器にそ
れぞれ対応して設けられ、対応する開閉器の状態を検知
すると共に、開閉制御を行なう子局装置と、上記各子局
装置に通信線を介して接続され、上記各子局装置へのサ
イクリックなポーリングを行なうことにより、上記各開
閉器の状態監視を行なう通信用親局と、上記通信用親局
に接続され、上記通信用親局を介して上記各子局装置に
上記各開閉器の開閉用制御信号を送信する計算機とを有
する配電線監視制御装置において、上記各開閉器内また
はその近傍にそれぞれ電圧、電流センサを設け、そのデ
ータを対応する子局装置に与えることにより、地絡事故
発生時の過電流を検出し得るようにすると共に、所定の
子局装置が過電流を検出せず、その電源側に隣接する子
局装置が過電流を検出した場合には、所定の子局装置を
短絡事故区間の負荷側と判定し、所定の子局装置に対応
する常閉開閉器に開放指令を発するようにしたことを特
徴とする配電線監視制御装置。3. A plurality of normally-closed switches and normally-open switches for interconnection provided at appropriate intervals in a distribution line, and a state of the corresponding switches provided for each of the switches. A slave station device that performs detection and switching control and is connected to each of the slave station devices via a communication line, and performs cyclic polling of each of the slave station devices, thereby monitoring the state of each of the switches. And a computer connected to the master station for communication and transmitting a control signal for opening and closing each switch to each slave station device via the master station for communication. In the control device, a voltage and current sensor are provided in or near each of the switches, and the data is provided to the corresponding slave station device, so that an overcurrent at the time of a ground fault accident can be detected. , The specified slave station If no overcurrent is detected by the slave station device adjacent to the power supply side, the predetermined slave station device is determined to be the load side of the short-circuit accident section, and the normally closed switching corresponding to the predetermined slave station device is performed. A distribution line monitoring and control device characterized by issuing an open command to a switch.
複数の配電線が連系可能に接続されると共に、上記常開
開閉器の片側電圧無しの状態時または地絡事故発生時に
投入される連系用の常開開閉器を１台のみ事前に指定す
るようにしたことを特徴とする請求項１〜請求項３のい
ずれか１項記載の配電線監視制御装置。4. A plurality of normally open switches for interconnection are provided,
Multiple distribution lines are connected so that they can be connected to each other, and only one normally-open switch for interconnection to be turned on when there is no voltage on one side of the normally open switch or when a ground fault occurs is specified in advance. The distribution line monitoring and control device according to any one of claims 1 to 3, wherein
で指定するようにしたことを特徴とする請求項４記載の
配電線監視制御装置。5. The distribution line monitoring and control device according to claim 4, wherein the normally-open switch for connection to be connected is manually designated.
可能に接続された各配電線の数時間後までの負荷を計算
機で予測し、予測負荷が最も小さい配電線の連系用常開
開閉器を指定するようにしたことを特徴とする請求項４
記載の配電線監視制御装置。6. A normally-open switchgear for connection to be input predicts a load up to several hours later on each distribution line connected so as to be able to be connected by a computer, and connects the distribution line with the smallest predicted load. 5. The normally open switch for a system is designated.
The distribution line monitoring and control device described in the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001173326A JP2002369375A (en) | 2001-06-08 | 2001-06-08 | Distribution line supervisory control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001173326A JP2002369375A (en) | 2001-06-08 | 2001-06-08 | Distribution line supervisory control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002369375A true JP2002369375A (en) | 2002-12-20 |
Family
ID=19014805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001173326A Pending JP2002369375A (en) | 2001-06-08 | 2001-06-08 | Distribution line supervisory control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002369375A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005300207A (en) * | 2004-04-07 | 2005-10-27 | Hitachi Ltd | Method of locating short-circuit point on power distribution line |
| JP2007143209A (en) * | 2005-11-14 | 2007-06-07 | Chugoku Electric Power Co Inc:The | Monitoring/control system and method |
| KR100740151B1 (en) | 2005-10-14 | 2007-07-16 | 명지대학교 산학협력단 | Method and apparatus for detecting and separating of a line-to-earth fault section in ungrounded distribution power systems |
| JP2014072947A (en) * | 2012-09-28 | 2014-04-21 | Mitsubishi Electric Corp | Detection and removal device of single line-to-ground fault of distribution line |
-
2001
- 2001-06-08 JP JP2001173326A patent/JP2002369375A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005300207A (en) * | 2004-04-07 | 2005-10-27 | Hitachi Ltd | Method of locating short-circuit point on power distribution line |
| JP4685365B2 (en) * | 2004-04-07 | 2011-05-18 | 株式会社日立製作所 | Distribution line short circuit location method |
| KR100740151B1 (en) | 2005-10-14 | 2007-07-16 | 명지대학교 산학협력단 | Method and apparatus for detecting and separating of a line-to-earth fault section in ungrounded distribution power systems |
| JP2007143209A (en) * | 2005-11-14 | 2007-06-07 | Chugoku Electric Power Co Inc:The | Monitoring/control system and method |
| JP4514691B2 (en) * | 2005-11-14 | 2010-07-28 | 中国電力株式会社 | Supervisory control system and method |
| JP2014072947A (en) * | 2012-09-28 | 2014-04-21 | Mitsubishi Electric Corp | Detection and removal device of single line-to-ground fault of distribution line |
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