JPH0522850A - Apparatus for countermeasure against breaker operation failure - Google Patents

Apparatus for countermeasure against breaker operation failure

Info

Publication number
JPH0522850A
JPH0522850A JP3172965A JP17296591A JPH0522850A JP H0522850 A JPH0522850 A JP H0522850A JP 3172965 A JP3172965 A JP 3172965A JP 17296591 A JP17296591 A JP 17296591A JP H0522850 A JPH0522850 A JP H0522850A
Authority
JP
Japan
Prior art keywords
circuit
fail
failure
accident
circuit breaker
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.)
Granted
Application number
JP3172965A
Other languages
Japanese (ja)
Other versions
JP2883472B2 (en
Inventor
Ichiro Kodama
一郎 児玉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP3172965A priority Critical patent/JP2883472B2/en
Publication of JPH0522850A publication Critical patent/JPH0522850A/en
Application granted granted Critical
Publication of JP2883472B2 publication Critical patent/JP2883472B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE:To avoid the loss of fail-safe conditions or the failure of ordinary monitoring even if a bus-bar is shutdown by selective cut-off at the time of breaker operation failure by a method wherein the failure detection condition of a line protective device is converted into a one-shot signal. CONSTITUTION:When a failure detection condition 6d is inputted from a line protective device when a breaker operation is failed, a signal 6e is outputted by a one-shot timer 15 for a certain period (t2). With this constitution, even if a bus-bar is shutdown by selective cut-off at the time of breaker operation failure and the failure detection condition 6d is outputted continuously, the operation of a fail-safe relay 32 is not continued and the loss of fail-safe conditions or the failure of ordinary monitoring can be avoided. Further, in accordance with a time chart, the setting time (t2) of the one-shot timer 15 must be shorter than the setting time (t3) of an ordinary monitoring failure detection timer 16, i.e., (t3)>(t2), and longer than the setting time (t1) of a breaker operation failure detection timer 9, i.e., (t2)>(t1).

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は自動監視機能を有するし
ゃ断器不動作対策装置、特に線路保護装置の事故検出条
件をフェイルセーフとしてトリップ回路を構成する装置
において、系統停止による事故検出条件が動作継続とな
ってもフェイルセーフ条件が喪失することがなく、又常
時監視不良を検出することのないしゃ断器不動作対策装
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 circuit breaker non-operation countermeasure device having an automatic monitoring function, and in particular, in a device that constitutes a trip circuit with the fault detection condition of a line protection device as a fail-safe, the fault detection condition due to a system stop operates. The present invention relates to a circuit breaker non-operation countermeasure device that does not lose the fail-safe condition even if it is continued and does not constantly detect a monitoring failure.

【0002】[0002]

【従来の技術】しゃ断器不良時の事故電流しゃ断不能が
発生した場合、事故電流による機器損傷および事故範囲
の拡大、停電の範囲の広範囲化、電力系統全体への波及
などから事故除去を高速度に行なうと共に正しく選択し
ゃ断する必要がある。
2. Description of the Related Art When an accident current cannot be cut off when a breaker is defective, the accident current can be removed at high speed due to equipment damage due to the accident current and expansion of the accident range, widening of the range of power outages, and spread to the entire power system. It is necessary to cut off the selection properly as well.

【0003】一般に、しゃ断器不動作などによる事故し
ゃ断失敗時の対策は、遠端後備保護に依存しているが、
前述したように、しゃ断失敗による事故波及の著しく拡
大されるような重要電気所のしゃ断器については、しゃ
断器不動作対策装置が適用される。事故時におけるしゃ
断失敗の原因は次の様な場合である。 (1)しゃ断器引外し回路の不良 引外し回路の断線、短絡、パレットスイッチの不良、D
C制御電源不良など。 (2)しゃ断器の機械操作系の不良 操作機構の不良、操作圧力の低下など。 (3)主しゃ断部の不良 多重雷による主しゃ断部開放後の極間フラッシオーバ近
距離事故によるしゃ断失敗とかしゃ断器破損など。
In general, measures for failure of accidental interruption due to malfunction of the circuit breaker, etc., depend on protection of the far-end backup equipment.
As described above, the breaker non-operation countermeasure device is applied to the breaker of the important electric station where the accident ripple due to the failure of the breakage is remarkably expanded. The causes of failure to shut off at the time of an accident are as follows. (1) Faulty circuit breaker trip circuit disconnection, short circuit, faulty pallet switch, D
C Control power supply failure, etc. (2) Defective mechanical operation system of circuit breaker Defective operating mechanism, decreased operating pressure, etc. (3) Defective main interrupting part Flashover between poles after opening the main interrupting part due to multiple lightning. Interruption failure due to short-distance accident or breaker breakage.

【0004】しゃ断器不動作対策は、前述の不良原因に
よるしゃ断失敗に対処するもので、図2はその基本的な
回路構成図の一例である。すなわち、同図に示すよう
に、母線1には遮断器3a,3b,3cを介してそれぞ
れ線路2a,2b,2cが接続されている。線路保護装
置6には母線1に設けた変圧器5からの電圧と線路2c
に設けた変流器4aの電流が入力される。また、線路2
cに設けた変流器4bの出力はブスタイしゃ断器CB7
を介して過電流リレー8に入力されるように構成されて
いる。線路保護装置6の出力6tと過電流リレー8の出
力8iがしゃ断器不動作判定タイマー9の整定時限t1
以上継続することにより、しゃ断器不動作と判定し、引
外し指令9tを出力し、同一母線1につながるしゃ断器
3a,3bをしゃ断して事故除去をはかるものである。
なお、過電流リレー8はしゃ断器不動作対策装置の誤動
作が系統に著しい影響を与えることから誤動作防止とし
て付加してある。
The circuit breaker non-operation measure deals with the failure of the circuit breaker due to the above-mentioned failure cause, and FIG. 2 is an example of a basic circuit configuration diagram thereof. That is, as shown in the figure, lines 2a, 2b and 2c are connected to the bus bar 1 via circuit breakers 3a, 3b and 3c, respectively. The line protection device 6 includes the voltage from the transformer 5 provided on the bus bar 1 and the line 2c.
The current of the current transformer 4a provided in the above is input. Also, track 2
The output of the current transformer 4b provided at c is the bus tie breaker CB7.
It is configured to be input to the overcurrent relay 8 via. The output 6t of the line protection device 6 and the output 8i of the overcurrent relay 8 are the settling time t 1 of the breaker inoperative judgment timer 9.
By continuing the above, it is determined that the circuit breaker is not operating, the trip command 9t is output, and the circuit breakers 3a and 3b connected to the same bus bar 1 are blocked to eliminate the accident.
The overcurrent relay 8 is added to prevent malfunction because the malfunction of the circuit breaker malfunction prevention device has a significant effect on the system.

【0005】また、しゃ断器不動作対策装置によるしゃ
断指令は、通常母線保護装置の制御回路を通して選択し
ゃ断を行なっている。そのしゃ断方式は母線方式によっ
て異なるが、ここでは二重母線標準方式による選択しゃ
断を図3の回路構成図を参照して説明する。
Further, the interrupting command from the circuit breaker non-operation countermeasure device is normally selected and interrupted through the control circuit of the busbar protection device. The cutoff method differs depending on the busbar method, but here, the selective cutoff by the double busbar standard method will be described with reference to the circuit configuration diagram of FIG.

【0006】図3は二重母線方式の場合の回路構成図で
ある。線路L1に事故Fが発生し、しゃ断器CB1がし
ゃ断失敗すると、ブスタイしゃ断器CB7および母線1
aにつながるしゃ断器CB3とCB5をしゃ断し、事故
除去を行なうものである。L2,L3,L4は線路、C
B2,CB4,CB6は母線1に連なるしゃ断器、T
1,T2は変圧器である。
FIG. 3 is a circuit diagram of a double bus system. If an accident F occurs on the line L1 and the circuit breaker CB1 fails to block, the bus tie circuit breaker CB7 and the bus bar 1
The circuit breakers CB3 and CB5 connected to a are cut off to eliminate the accident. L2, L3, L4 are lines, C
B2, CB4, CB6 are circuit breakers connected to the bus bar 1, T
1, T2 are transformers.

【0007】以上の説明は、しゃ断器不動作対策の基本
的な考え方についてであるが、次に、図4(a),
(b)のしゃ断器不動作検出回路及びトリップ回路につ
いて簡単に説明する。
The above explanation is about the basic idea of the circuit breaker non-operation measure. Next, referring to FIG.
The circuit breaker failure detection circuit and the trip circuit of (b) will be briefly described.

【0008】線路に事故が発生すると、線路保護装置6
にて事故を検出し、しゃ断器へ引外し指令を出力すると
同時にしゃ断器不動作対策装置へ引外し指令条件信号6
a,6b,6c、事故検出条件信号6dを出力する。し
ゃ断器不動作対策装置においては、その引外し指令条件
6a,6b,6c,6dと過電流リレー出力0C1,0
C2,0C3とのアンド条件がしゃ断器不動作判定タイ
マー9の整定時限t1以上(しゃ断器の動作以上)継続
することにより、しゃ断器不動作を検出し、母線保護装
置の選択しゃ断回路21により、同一母線につながるし
ゃ断器の引外し指令リレー31を動作させる。トリップ
回路は、しゃ断器不動作対策装置が誤動作した時の系統
への影響を鑑みて、図4(b)の様にフェイルセーフリ
レー(事故検出条件)32と前述のしゃ断指令リレー3
1をアンド条件に構成することにより誤動作を防止して
いる。フェイルセーフリレー32は母線保護装置のフェ
イルセーフリレーと兼用している。これは同装置のしゃ
断回路を使用して選択しゃ断を行ない事故除去を行なっ
ており、フェイルセーフリレーが兼用できるためであ
る。しかし、線路の未端事故(相手端至近端事故)のよ
うに、母線保護装置の事故検出が期待出来ないようなケ
ースの場合、フェイルセーフリレー32不動作により、
しゃ断器の引外しが出来ず事故除去不可となる為、その
対策として線路保護装置よりしゃ断不動作検出の判定用
に取込んでいる事故検出条件6dをフェイルセーフリレ
ーとして使用することにて、トリップ回路を構成してい
る。
When an accident occurs on the track, the track protection device 6
Detects an accident and outputs a trip command to the circuit breaker, and at the same time trips the command signal 6
It outputs a, 6b, 6c and an accident detection condition signal 6d. In the circuit breaker non-operation countermeasure device, the trip command conditions 6a, 6b, 6c, 6d and the overcurrent relay output 0C1,0
By AND condition between C2,0C3 is (operation more breaker) settling limit t 1 or more breaker inoperative determination timer 9 continues to detect a breaker inoperative, by selecting shutdown circuit 21 of the busbar protection device , The trip command relay 31 of the circuit breaker connected to the same bus bar is operated. The trip circuit considers the influence on the system when the circuit breaker non-operation countermeasure device malfunctions, as shown in FIG. 4 (b). The fail-safe relay (accident detection condition) 32 and the above-mentioned cutoff command relay 3
A malfunction is prevented by configuring 1 as an AND condition. The fail safe relay 32 also serves as the fail safe relay of the busbar protection device. This is because the cut-off circuit of the device is used to perform selective cut-off to eliminate accidents, and it can also be used as a fail-safe relay. However, in the case where the busbar protection device cannot detect an accident, such as an accident at the end of the line (accident at the other end), the fail-safe relay 32 does not operate.
Since the circuit breaker cannot be tripped and the accident cannot be removed, as a countermeasure, the accident detection condition 6d, which is taken in by the line protection device for judgment of the interruption failure detection, is used as a fail-safe relay. It constitutes a circuit.

【0009】一般に、保護装置特に全静止形、ディジタ
ル形装置においては、自動監視の機能を有しており、不
良の早期発見を行ない、装置の信頼度向上を計ってい
る。すなわち、図4(c)に示すように、しゃ断器不動
作対策装置も、フェイルセーフリレー32、しゃ断指令
リレー31の接点の常時監視を行ない信頼度の向上を計
っている。自動監視の具体的な方法は監視と点検に分け
られる。監視は常時継電器の異常の有無をチェックする
もので、例えば常時不動作であるべき継電器の出力の最
終出力などを常時監視しておき、これが動作すれば異常
と見なして不良検出し、装置ロック及び警報出力を行な
うものである。但し、系統事故時には継電器の最終出力
は当然動作するので、継電器異常と判定するには、系統
事故継続時間以上の動作継続を条件とする必要がある。
点検は一定周期で継電器に健全時と異った模擬入力を印
加し、動作良否を判断するものである。これは継電器が
最終出力として常時不動作であるという特徴をもってい
る為に必要なもので、継電器の誤不動作を未然に見付け
出すものである。
In general, a protective device, especially an all-static type or digital type device, has an automatic monitoring function to detect defects early and improve the reliability of the device. That is, as shown in FIG. 4 (c), the circuit breaker non-operation countermeasure device also constantly monitors the contacts of the fail-safe relay 32 and the circuit break command relay 31 to improve reliability. The specific method of automatic monitoring can be divided into monitoring and inspection. Monitoring constantly checks the presence of abnormalities in the relay.For example, the final output of the relay output, which should always be inactive, is constantly monitored. It outputs an alarm. However, since the final output of the relay operates naturally in the event of a system fault, it is necessary to continue operation for longer than the system fault duration in order to determine that the relay is abnormal.
The inspection is to judge whether the operation is good or not by applying a simulated input to the relay at a constant cycle, which is different from the normal case. This is necessary because the relay is always inoperative as the final output, and it is possible to find a malfunction of the relay in advance.

【0010】[0010]

【発明が解決しようとする課題】従って、前述の自動監
視を有する図4に示すしゃ断器不動作対策装置の場合、
線路に事故が発生すると、当該回線の線路保護装置6に
て事故検出を行ない、当該線路のしゃ断器の引外しを行
なうと同時にしゃ断器不動作対策装置へ事故検出条件6
d、しゃ断指令条件6a,6b,6cを出力する。しゃ
断器不動作装置においては、線路保護装置6よりの出力
6a,6b,6c,6dと、過電流リレー出力0C1,
0C2,0C3のアンド条件がしゃ断器不動作判定用タ
イマー9の整定時限t1 以上継続することにて、しゃ断
器不動作と判定し、しゃ断指令リレー31を動作させ
る。フェイルセーフリレー32は母線保護装置11,1
3の事故検出条件11a,13a又は線路保護装置の事
故検出条件6dの出力有にて動作し、前述のしゃ断指令
リレー31の動作とのアンド条件成立にて、当該しゃ断
器不動作回線に接続される母線を選択しゃ断し事故除去
を行なう。よって、停止母線に接続される母線保護装置
および線路保護装置の事故検出条件11a,13bおよ
び6dは母線電圧無により動作継続となる。なお、その
対策として母線保護装置11,13では、母線電圧が3
相共無条件が一定時間継続することにより全停と判定
し、出力をロックする全停検出回路12,14を設けて
いる。
Therefore, in the case of the circuit breaker non-operation countermeasure device shown in FIG. 4 having the above-mentioned automatic monitoring,
When an accident occurs in the line, the line protection device 6 of the line detects the accident, and at the same time, the circuit breaker of the line is tripped, and at the same time, the circuit breaker non-operation countermeasure device is provided with the accident detection condition 6
d, the cutoff command conditions 6a, 6b, 6c are output. In the circuit breaker inoperative device, the outputs 6a, 6b, 6c, 6d from the line protection device 6 and the overcurrent relay output 0C1,
When the AND condition of 0C2 and 0C3 continues for the settling time t 1 or more of the breaker malfunction determination timer 9, it is determined that the breaker is malfunctioning, and the break command relay 31 is activated. The fail-safe relay 32 is a busbar protection device 11,1.
It operates with the output of the accident detection conditions 11a and 13a of 3 or the accident detection condition 6d of the line protection device, and is connected to the circuit breaker non-operation line when the AND condition is satisfied with the operation of the interruption command relay 31 described above. Select the bus line to cut off and remove the accident. Therefore, the fault detection conditions 11a, 13b, and 6d of the busbar protection device and the line protection device connected to the stop busbar continue to operate without the busbar voltage. As a countermeasure, in the busbar protection devices 11 and 13, the busbar voltage is 3
There are provided all-stop detection circuits 12 and 14 which lock the output when the unconditional condition is continued for a certain period of time to determine that all the stops have occurred.

【0011】しかし、線路保護装置6の事故検出条件6
dは、送り側にて確実にロックされるとは限らない。受
側にて全停ロックを行なうには、事故検出条件6dがど
ちらの母線につながっているのか、受側では判断できな
く、母線保護装置11,13による全停ロックは行なっ
ていない。そのため、線路保護装置6の事故検出条件6
dは母線停止による母線電圧無にて出力継続となり、フ
ェイルセーフリレー32は動作継続となる。よってフェ
イルセーフリレー条件が喪失することとなる。又、図4
(c)の常時監視回路にてフェイルセーフリレー32の
接点メークが常時監視タイマー16の整定時間t3 以上
継続することから、出力回路の常時監視不良を検出し、
装置ロック及び表示警報を出力するという不具合が生じ
る。
However, the accident detection condition 6 of the line protection device 6
d is not always locked on the sending side. In order to perform the full stop lock on the receiving side, the receiving side cannot determine which busbar the accident detection condition 6d is connected to, and the full stop locking by the busbar protection devices 11 and 13 is not performed. Therefore, the accident detection condition 6 of the line protection device 6
The output of d is continued without the bus voltage due to the stop of the bus, and the fail-safe relay 32 continues to operate. Therefore, the fail-safe relay condition will be lost. Also, FIG.
Since the contact make of the fail-safe relay 32 continues for the settling time t 3 of the constant monitoring timer 16 in the constant monitoring circuit of (c), the constant monitoring failure of the output circuit is detected,
A problem occurs that the device is locked and the display alarm is output.

【0012】本発明は上記事情に鑑みて成されたもの
で、その目的は線路保護装置よりの事故検出条件をフェ
イルセーフ条件として使用するしゃ断器不動作対策装置
において、しゃ断器不動作時、事故除去による選択しゃ
断にて母線停止となっても、フェイルセーフリレー条件
が喪失することを防止し、又常時監視不良とならないし
ゃ断器不動作対策装置を提供することにある。
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a circuit breaker non-operation countermeasure device that uses an accident detection condition from a line protection device as a fail-safe condition. It is an object of the present invention to provide a circuit breaker non-operation countermeasure device that prevents loss of the fail-safe relay condition even if the bus stops due to selective blockage due to removal, and does not always cause monitoring failure.

【0013】[0013]

【課題を解決するための手段】本発明は上記目的を達成
するために、線路保護装置の事故検出条件と、しゃ断器
引外し指令条件を起動条件とし、事故電流が一定時間継
続することにより、しゃ断不動作を検出し同一母線につ
ながる他のしゃ断器を開放することにより事故除去を計
るしゃ断器不動作対策装置において、線路保護装置から
の事故検出条件をワンショット回路にて一定時間のみ出
力するように構成したことを特徴とするものである。
In order to achieve the above-mentioned object, the present invention uses an accident detection condition of a line protection device and a breaker trip command condition as a starting condition, and the accident current continues for a certain period of time. In the circuit breaker non-operation countermeasure device, which detects the circuit breaker failure and opens the other circuit breaker connected to the same bus bar, it outputs the accident detection condition from the line protection device in the one-shot circuit for a certain period of time. It is characterized by being configured as described above.

【0014】[0014]

【作用】本発明によれば、フェイルセーフリレーに使用
する線路保護装置よりの事故検出条件をワンショット回
路にて、一定時間のみ出力することにより、しゃ断不動
作時の選択しゃ断による片母線停止にて、事故検出条件
が継続出力となっても、フェイルセーフリレーを一定時
間のみ動作させることにより、フェイルセーフ条件の喪
失を防止すると共に常時監視不良となることを防止する
ことができる。
According to the present invention, the one-shot circuit outputs the accident detection condition from the line protection device used for the fail-safe relay only for a certain period of time, thereby stopping one bus bar due to the selective interruption during the interruption failure. Thus, even if the accident detection condition is a continuous output, by operating the fail-safe relay for a certain period of time, it is possible to prevent loss of the fail-safe condition and prevent constant monitoring failure.

【0015】[0015]

【実施例】以下、本発明の実施例を図を参照して説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.

【0016】図1は本発明の一実施例であるしゃ断器不
動作対策装置の構成図である。同図において、図4と対
応する符号は図4にて説明した機能を有しており、その
詳細な説明は省略する。
FIG. 1 is a block diagram of a circuit breaker non-operation countermeasure device according to an embodiment of the present invention. In the figure, reference numerals corresponding to those in FIG. 4 have the functions described in FIG. 4, and detailed description thereof will be omitted.

【0017】15はワンショットタイマーであり、信号
入力があると整定時限t2 だけ出力を行なうものであ
る。しゃ断不動作時線路保護装置より事故検出条件6d
の入力があるとワンショットタイマー15より一定時間
2だけ出力信号6eを出すことによりしゃ断器不動作
による選択しゃ断にて母線停止となり、事故検出条件6
dが出力継続してもフェイルセーフリレー32が動作継
続となることを防止するものである。
Reference numeral 15 is a one-shot timer which, when a signal is input, outputs only for the settling time t 2 . Accident detection condition 6d from the line protection device when shut off
, The one-shot timer 15 outputs the output signal 6e for a certain time t 2 to stop the busbar due to the selective interruption due to the circuit breaker not operating.
This is to prevent the fail-safe relay 32 from continuing to operate even if d continues to be output.

【0018】以上説明したように、線路保護装置よりの
事故検出条件をワショット信号化すれば、しゃ断器不動
作対策にて選択しゃ断を行ない片母線停止となっても、
フェイルセーフリレー条件の喪失を防止すると共にしゃ
断器不動作対策装置の常時監視回路が不良を検出するの
を防止できる。
As described above, if the accident detection condition from the line protection device is converted to the wasshot signal, even if the single bus bar is stopped due to selective interruption as a measure against circuit breaker malfunction,
It is possible to prevent the loss of the fail-safe relay condition and prevent the constant monitoring circuit of the circuit breaker non-operation countermeasure device from detecting a defect.

【0019】図5(a),(b)がそのタイムチャート
である。まず、図5(a)のタイムチャートにおいて、
しゃ断器不動作時、線路保護装置の事故検出条件6dは
選択しゃ断による片母線停止にて母線電圧無により出力
は継続し、フェイルセーフリレー32は動作継続となり
フェイルセーフ条件の機能を喪失する。またフェイルセ
ーフリレー32の接点はメーク継続となり、接点メーク
時間が常時監視タイマー16の整定時間t2 を超えるこ
とにより出力回路の常時監視不良にいたってしまう。図
5(b)が本発明によるタイムチャートである。線路保
護装置の事故検出条件6dをワンショットタイマー15
にて一定時間t2 のワンショット信号6eとすることに
より、6dが出力継続となってもフェイルセーフリレー
32の動作が継続とならないようにし、フェイルセーフ
条件の喪失防止又は出力回路の常時監視不良となる事を
防止する。また、タイムチャートから分るようにワンシ
ョットタイマー15の整定時間t2 は、常時監視不良検
出タイマー16の整定時間t3 よりt3 >t2 とする必
要がある。又しゃ断器不動作検出タイマー9の整定時間
1 よりt2 >t1 とする必要がある。
FIGS. 5A and 5B are time charts thereof. First, in the time chart of FIG.
When the circuit breaker does not operate, the fault detection condition 6d of the line protection device continues to output due to no bus voltage due to one bus stop due to selective interruption, and the fail-safe relay 32 continues to operate and loses the fail-safe condition function. Further, the contacts of the fail-safe relay 32 continue to be made, and the contact make time exceeds the settling time t 2 of the constant monitoring timer 16, resulting in failure of constant monitoring of the output circuit. FIG. 5B is a time chart according to the present invention. The one-shot timer 15 is applied to the accident detection condition 6d of the track protection device.
With one-shot signal 6e for a predetermined time t 2 at, 6d is so not the operation of the fail safe relay 32 and continued as an output continuous, constant monitoring failure of loss prevention or output circuit of the fail-safe condition Will be prevented. Further, as can be seen from the time chart, the settling time t 2 of the one-shot timer 15 needs to be t 3 > t 2 from the settling time t 3 of the constant monitoring failure detection timer 16. Further, it is necessary to set t 2 > t 1 from the settling time t 1 of the breaker inactivity detection timer 9.

【0020】なお、上記実施例ではワンショットタイマ
ーによるワンショット信号化を説明したが、事故検出条
件が一定時間継続したことにより、出力をロックする方
法にてもワンショット信号化ができる。
In the above embodiment, the one-shot signal is converted into the one-shot signal by the one-shot timer. However, the one-shot signal can be converted into the one-shot signal even if the accident detection condition continues for a certain time.

【0021】[0021]

【発明の効果】以上説明したように、本発明によればフ
ェイルセーフリレーに使用する線路保護装置の事故検出
条件をワンショット信号化する事により、しゃ断不動作
時の選択しゃ断による母線停止によってフェイルセーフ
条件を喪失することなく、又常時監視不良とならないし
ゃ断器不動作対策装置を提供することができる。
As described above, according to the present invention, the fault detection condition of the line protection device used for the fail-safe relay is converted into a one-shot signal, so that the bus line is stopped by the selective interruption during the interruption operation. It is possible to provide a circuit breaker non-operation countermeasure device that does not always cause a monitoring failure without losing the safe condition.

【図面の簡単な説明】[Brief description of drawings]

【図1】(a)は本発明の一実施例の回路構成図、
(b)はそのトリップ回路図、(c)はそのフェイルセ
ーフリレーとしゃ断指令リレーの両接点を常時監視する
回路図。
FIG. 1A is a circuit configuration diagram of an embodiment of the present invention,
(B) is a trip circuit diagram thereof, and (c) is a circuit diagram for constantly monitoring both contacts of the fail-safe relay and the interruption command relay.

【図2】従来のしゃ断器不動作の回路構成図。FIG. 2 is a circuit configuration diagram of a conventional breaker not operating.

【図3】従来の2重母線方式のしゃ断器不動作の回路構
成図。
FIG. 3 is a circuit configuration diagram of a conventional double bus bar type circuit breaker inoperative.

【図4】(a)は従来のしゃ断器不動作対策装置の回路
構成図、(b)はそのトリップ回路図、(c)はそのフ
ェイルセーフリレーとしゃ断指令リレーの両接点を常時
監視する回路図。
FIG. 4A is a circuit configuration diagram of a conventional circuit breaker non-operation countermeasure device, FIG. 4B is a trip circuit diagram thereof, and FIG. 4C is a circuit for constantly monitoring both contacts of the fail-safe relay and the interruption command relay. Fig.

【図5】(a)は従来のタイムチャート、(b)は本発
明のタイムチャート。
5A is a conventional time chart, and FIG. 5B is a time chart of the present invention.

【符号の説明】[Explanation of symbols]

6…線路保護装置、9…しゃ断器不動作判定タイマー、
11,13…母線保護装置、12,14…全停検出回
路、15…ワンショットタイヤ、16…常時監視タイ
ヤ、21…選択しゃ断回路、31…しゃ断指令リレー、
32…フェイルセーフリレー。
6 ... Track protection device, 9 ... breaker non-operation determination timer,
11, 13 ... Busbar protection device, 12, 14 ... Total stop detection circuit, 15 ... One-shot tire, 16 ... Constant monitoring tire, 21 ... Selective cutoff circuit, 31 ... Cutoff command relay,
32 ... Fail-safe relay.

Claims (1)

【特許請求の範囲】 【請求項1】 線路保護装置の事故検出条件としゃ断器
引外し指令条件とを起動条件とし、事故電流が一定時間
継続することにより、しゃ断不動作を検出し同一母線に
つながる他のしゃ断器を開放することにより事故除去を
計るしゃ断器不動作対策装置において、前記線路保護装
置からの事故検出条件をワンショット回路にて一定時間
のみ出力するように構成した事を特徴とするしゃ断器不
動作対策装置。
Claims: 1. The fault detection condition of the line protection device and the breaker trip command condition are used as starting conditions, and if the fault current continues for a certain period of time, a faulty disconnection is detected and the same busbar is detected. In the circuit breaker non-operation countermeasure device that measures the accident elimination by opening the other circuit breaker connected, the one-shot circuit is configured to output the accident detection condition from the line protection device only for a certain period of time. Breaker malfunction prevention device.
JP3172965A 1991-07-15 1991-07-15 Circuit breaker malfunction prevention device Expired - Lifetime JP2883472B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3172965A JP2883472B2 (en) 1991-07-15 1991-07-15 Circuit breaker malfunction prevention device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3172965A JP2883472B2 (en) 1991-07-15 1991-07-15 Circuit breaker malfunction prevention device

Publications (2)

Publication Number Publication Date
JPH0522850A true JPH0522850A (en) 1993-01-29
JP2883472B2 JP2883472B2 (en) 1999-04-19

Family

ID=15951644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3172965A Expired - Lifetime JP2883472B2 (en) 1991-07-15 1991-07-15 Circuit breaker malfunction prevention device

Country Status (1)

Country Link
JP (1) JP2883472B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7874733B2 (en) 2006-01-05 2011-01-25 Ntn Corporation Rolling bearing
US7918606B2 (en) 2004-10-08 2011-04-05 Ntn Corporation Rolling bearing
US8746982B2 (en) 2010-03-30 2014-06-10 Ntn Corporation Rolling bearing device
US9121303B2 (en) 2008-06-10 2015-09-01 United Technologies Corporation Bearing system
JP6026068B1 (en) * 2016-04-22 2016-11-16 三菱電機株式会社 Breaker non-operation protection relay and protection relay system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7918606B2 (en) 2004-10-08 2011-04-05 Ntn Corporation Rolling bearing
US7874733B2 (en) 2006-01-05 2011-01-25 Ntn Corporation Rolling bearing
US9121303B2 (en) 2008-06-10 2015-09-01 United Technologies Corporation Bearing system
US8746982B2 (en) 2010-03-30 2014-06-10 Ntn Corporation Rolling bearing device
JP6026068B1 (en) * 2016-04-22 2016-11-16 三菱電機株式会社 Breaker non-operation protection relay and protection relay system
WO2017183171A1 (en) * 2016-04-22 2017-10-26 三菱電機株式会社 Circuit breaker failure protection relay and protection relay system
KR20180113565A (en) 2016-04-22 2018-10-16 미쓰비시덴키 가부시키가이샤 Circuit Breaker Motion Protection Relay and Protection Relay System
US11050237B2 (en) 2016-04-22 2021-06-29 Mitsubishi Electric Corporation Circuit breaker failure protection relay and protection relay system

Also Published As

Publication number Publication date
JP2883472B2 (en) 1999-04-19

Similar Documents

Publication Publication Date Title
US6426856B1 (en) Method for monitoring a protective gear
JP2883472B2 (en) Circuit breaker malfunction prevention device
CN112751316B (en) Configuration method and device for power failure of bus voltage transformer
JPH06276672A (en) Method for sensing and isolating groud fault
KR102036413B1 (en) Logic of Breaker Failure(BF) Protective Element using Apparent Power Detective Element for Generator Circuit Breaker(GCB) in Power Plant
JP3099313B2 (en) Electric car power protection device
JP2005312180A (en) Digital protective relay system
KR102127471B1 (en) Total AI Backup Protection System for Substation
US20220216024A1 (en) Circuit breaker system
JPH06233445A (en) Overcurrent preventive circuit
KR20240093056A (en) Motor Control Module which is able to detect the electric trouble of the interior electromagnetic element`s contact point and recovery the electric trouble
JPH0327715A (en) Protective relay
JP3880773B2 (en) Protection system
JPH02241319A (en) Power supply protective control system
KR101108324B1 (en) Method and Apparatus for monitoring an Operating Current of Digital Output Module
JPS63161810A (en) Protective relay
JPH0993786A (en) Undervoltage relay supervising circuit
JP2000032648A (en) Circuit breaker malfunctioning countermeasure device
JP2001112165A (en) Bus protective relay device
JPS60207414A (en) Protecting relaying device
JPH0340716A (en) Tripping device for auxiliary machine at service interruption
JPS6343970B2 (en)
JPH0119207B2 (en)
JPH0568326A (en) Circuit protector
JPH0227891B2 (en)

Legal Events

Date Code Title Description
S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080205

Year of fee payment: 9

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090205

Year of fee payment: 10

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100205

Year of fee payment: 11

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100205

Year of fee payment: 11

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110205

Year of fee payment: 12

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120205

Year of fee payment: 13

EXPY Cancellation because of completion of term
FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120205

Year of fee payment: 13