JPS6127305Y2 - - Google Patents
Info
- Publication number
- JPS6127305Y2 JPS6127305Y2 JP18758181U JP18758181U JPS6127305Y2 JP S6127305 Y2 JPS6127305 Y2 JP S6127305Y2 JP 18758181 U JP18758181 U JP 18758181U JP 18758181 U JP18758181 U JP 18758181U JP S6127305 Y2 JPS6127305 Y2 JP S6127305Y2
- Authority
- JP
- Japan
- Prior art keywords
- train
- current
- power source
- relay
- load current
- 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.)
- Expired
Links
- 230000001681 protective effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Description
【考案の詳細な説明】 本考案は交流き電回線の保護装置に関する。[Detailed explanation of the idea] The present invention relates to a protection device for AC feeding lines.
交流電化による電車線き電回線の保護は、第１
図に示す距離継電器１による電源端より見たイン
ピーダンス値で事故判別を行なつている。電源２
における電流ｉ及び電圧ｖを変流器３，変成器４
によつて距離継電器１に取込み、架線（又はトロ
リー線）５での短絡事故によるインピーダンスＺ
（＝ｖ／ｉ）の変化から距離継電器１に短絡事故
発生の判定信号を得て電源しや断器のトリツプ信
号を得る。 Protection of electric power lines through AC electrification is the first step.
Accidents are determined based on the impedance value seen from the power source end of the distance relay 1 shown in the figure. power supply 2
Current i and voltage v at current transformer 3 and transformer 4
The impedance Z due to a short circuit accident on the overhead wire (or trolley wire) 5 is taken into the distance relay 1 by
(=v/i), a determination signal indicating the occurrence of a short circuit accident is obtained in the distance relay 1, and a trip signal for the power supply and disconnection is obtained.
しかし、長距離のき電回線に過密ダイヤの列車
６１，６２，……，６oが負荷となるとき、負荷
電流の増大が事故電流との区別を難しくする。即
ち、各電源変電所からの電流ｉは列車負荷電流と
事故電流の合計電流になり、距離継電器が電圧ｖ
と電流ｉの比（インピーダンス）から保護動作を
得るときには事故発生がなくとも列車負荷電流に
より誤つたしや断器引外し操作になるし、逆に事
故発生に応答できなくなる。 However, when trains 6 1 , 6 2 , . . . , 6 o with overcrowded schedules become a load on a long-distance feeding line, the increase in load current makes it difficult to distinguish it from a fault current. That is, the current i from each power substation becomes the total current of the train load current and the fault current, and the distance relay
When a protective operation is obtained from the ratio (impedance) of the current i and the current i, even if no accident has occurred, the train load current will cause an erroneous trip or disconnection operation, and conversely, it will not be possible to respond to the occurrence of an accident.
この問題を解消するものとして、平行四辺形特
性を持つ２つの距離継電器によりＬ字形特性に動
作範囲を設定するものがあるが、列車負荷電流の
増化につれて事故との判別が難しくなり、保護区
間長が制限されるものであつた。 To solve this problem, there is a method that uses two distance relays with parallelogram characteristics to set the operating range in an L-shaped characteristic, but as the train load current increases, it becomes difficult to distinguish it from an accident, and the protected area The length was limited.
本考案は列車負荷電流データを列車無線により
収集し、この電流を変電所電流から差引いて事故
判別することにより、列車負荷電流の増減に拘ら
ず確実なる保護動力になる装置を提供することを
目的とする。 The purpose of this invention is to provide a device that provides reliable protection power regardless of increases or decreases in train load current by collecting train load current data via train radio and subtracting this current from substation current to determine faults. shall be.
第２図は本考案の一実施例を示す。電源２側の
電流ｉ，電圧ｖは演算処理装置７に取込まれ、各
列車６１〜６oの個々の電流i1〜ｉoは列車無線を
通して演算処理装置７にデータ収集される。演算
処理装置７は電流ｉから電流i1〜ｉoを差引いた
電流ｉ
ｉ＝ｉ−（i1＋i2＋……＋ｉo）
を電圧ｖと共に距離継電器１の演算入力とする。
各列車の電流データの収集には列車無線により時
分割的（例えば１サイクル毎）に各列車６１〜６
oへの電流データ送信指令を与え、この指令を受
信した列車は該時点の電流瞬時値をデータi1〜ｉ
oとして変電所側に送信する。このために、各列
車には運行に要する負荷電流量を検出する装置を
具える。 2 shows an embodiment of the present invention. The current i and voltage v on the power source 2 side are input to the processor 7, and the individual currents i1 to i0 of the trains 61 to 60 are collected by the processor 7 through train radio. The processor 7 subtracts the currents i1 to i0 from the current i, i=i-( i1 + i2 +...+ i0 ), and uses this current as an input to the distance relay 1 together with the voltage v.
The current data of each train is collected by train radio in a time-division manner (e.g., every cycle) for each train 6 1 to 6
o , the train receives the current data transmission command, and the train transmits the instantaneous current value at that time as data i 1 to i
To this end, each train is equipped with a device that detects the amount of load current required for operation.
従つて、距離継電器１におけるインピーダンス
からの事故判定には、変電所電流ｉから各列車負
荷電流の総和（i1＋i2＋……tio）を差引いた電流
ｉと電圧ｖによつてなされ、列車負荷電流に影
響されることなく事故電流に対してのみ継電器１
が感応して保護動作を得ることができる。このた
め、負荷電流増減に対して継電器整定値を季節毎
に変更したり、保護区間を制限することなく、簡
単な継電器による確実な保護が可能となる。 Therefore, fault determination based on the impedance of the distance relay 1 is made based on the current i and voltage v, which are obtained by subtracting the sum of each train load current (i 1 +i 2 +...ti o ) from the substation current i, Relay 1 only for fault current without being affected by train load current
can respond and take protective action. Therefore, it is possible to provide reliable protection using a simple relay without changing the relay setting value depending on the season or limiting the protection zone in response to changes in load current.
なお、演算処理装置７はデイジタル処理装置が
好適で、通常のデイジタル式保護継電器を利用し
て継電器１も含めた演算処理が可能である。ま
た、列車負荷電流データの収集のための列車無線
は新幹線等に実施されている漏洩同軸ケーブルを
用いて列車運行システムの一部を使用することが
可能である。なお、各列車の内部事故には列車入
口側しや断器で保護されるため、この事故によつ
て電源側距離継電器の誤動作，動作障害になるこ
とはない。 Note that the arithmetic processing device 7 is preferably a digital processing device, and can perform arithmetic processing including the relay 1 using a normal digital protective relay. Furthermore, train radio for collecting train load current data can be used as a part of the train operation system using a leaky coaxial cable, which is used on Shinkansen trains and the like. Furthermore, since each train is protected against internal accidents by the train entrance side disconnector, this accident will not cause malfunction or operational failure of the power supply side distance relay.
以上のとおり、本考案によれば、列車負荷電流
に影響されることなく、簡単な継電器により短絡
事故によるき電回線の確実な保護ができる効果が
ある。 As described above, the present invention has the effect that the feeding line can be reliably protected from short-circuit accidents using a simple relay without being affected by the train load current.
第１図は従来のき電回線の保護装置を示す図、
第２図は本考案の一実施例を示す図である。
１……距離継電器、５……架線、６１，６２，
６o……列車、７……演算処理装置。
Figure 1 is a diagram showing a conventional protection device for feeding lines.
FIG. 2 is a diagram showing an embodiment of the present invention. 1... Distance relay, 5... Catenary line, 6 1 , 6 2 ,
6 o ...train, 7...computation processing unit.
Claims (1)
ンスによつてき電線の短絡事故の有無を判定して
保護動作する保護装置において、列車無線により
保護区間内の各列車の電流データを収集し、この
収集した各列車の電流の総和を上記電源の電流か
ら差引いた電流値と該電源の電圧とによつて該電
源から見たインピーダンスを演算することを特徴
とする交流き電回線の保護装置。 A protection device that protects an AC feeding line by determining whether there is a short-circuit accident in the feeder line based on the impedance seen from the power source, collects current data of each train within the protected area using train radio, and A protection device for an AC power supply line, characterized in that the impedance seen from the power source is calculated based on the current value obtained by subtracting the sum of the collected currents of each train from the current of the power source and the voltage of the power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18758181U JPS5892138U (en) | 1981-12-16 | 1981-12-16 | AC feeding line protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18758181U JPS5892138U (en) | 1981-12-16 | 1981-12-16 | AC feeding line protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5892138U JPS5892138U (en) | 1983-06-22 |
| JPS6127305Y2 true JPS6127305Y2 (en) | 1986-08-14 |
Family
ID=33307575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18758181U Granted JPS5892138U (en) | 1981-12-16 | 1981-12-16 | AC feeding line protection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5892138U (en) |
-
1981
- 1981-12-16 JP JP18758181U patent/JPS5892138U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5892138U (en) | 1983-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3614513B1 (en) | Dc ground fault detection system and dc ground fault detection method for dc electric railway | |
| JP3284589B2 (en) | Transmission line protection method and protection relay device | |
| JP2000333359A (en) | Grounding fault-detecting device for mechanically/ electrically integrated system | |
| KR100755452B1 (en) | Bus differential protective relaying system in ungrounded DC traction power supply system and control method thereof | |
| JPS6127305Y2 (en) | ||
| JP2521699B2 (en) | DC electric railway feeder system | |
| JP2969905B2 (en) | Fault detection device for distribution line | |
| JP2866172B2 (en) | Transmission line fault direction locating method | |
| JP2607215Y2 (en) | Accident detection device for DC railway substation | |
| JPH071980B2 (en) | Distribution line accident section detection and separation device | |
| CN112034393B (en) | Breakpoint diagnosis method and system for main circuit of power supply of overhead contact system | |
| JP2558350B2 (en) | How to disconnect the faulty section of the distribution line | |
| JP2553827Y2 (en) | Rail potential protection device for DC feeding system | |
| Ganjavi et al. | Distance protection settings in electrical railway systems with positive and negative feeder | |
| JPH0510516Y2 (en) | ||
| JPH0515636U (en) | Distance relay with load area approach alarm | |
| JPH033451B2 (en) | ||
| JPS6245483Y2 (en) | ||
| JP2561984B2 (en) | Substation fault section detection system | |
| JPH02311123A (en) | Dc ground-fault detector | |
| JPS585396Y2 (en) | Earth fault protection device | |
| JPS5855736B2 (en) | Fault section determination method in case of power system fault | |
| JP3560297B2 (en) | Ground fault distance relay device | |
| JPS6347052B2 (en) | ||
| JPH071979B2 (en) | Distribution line Ground fault Fault relay for detecting section |