JPH08235976A - Failure detecting device of gas blast circuit-breaker - Google Patents
Failure detecting device of gas blast circuit-breakerInfo
- Publication number
- JPH08235976A JPH08235976A JP7061535A JP6153595A JPH08235976A JP H08235976 A JPH08235976 A JP H08235976A JP 7061535 A JP7061535 A JP 7061535A JP 6153595 A JP6153595 A JP 6153595A JP H08235976 A JPH08235976 A JP H08235976A
- Authority
- JP
- Japan
- Prior art keywords
- circuit breaker
- gas
- protection relay
- pressure
- failure
- 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
- 238000001514 detection method Methods 0.000 claims description 35
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガス遮断器やガス絶縁
開閉装置の遮断器ガス区画などのガス遮断器の内部で地
絡または短絡故障が発生した際に、故障を検出するガス
遮断器の故障検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas circuit breaker for detecting a fault when a ground fault or a short circuit fault occurs inside a gas circuit breaker such as a gas circuit breaker or a circuit breaker gas compartment of a gas insulated switchgear. The failure detection device.
【０００２】[0002]
【従来の技術】一般に、ガス遮断器、あるいはガス絶縁
開閉装置の遮断器ガス区画は、遮断器を金属容器に収納
するとともに、六フッ化硫黄ガスなどの絶縁ガスを封入
して形成されており、小型化、高信頼性および安全性に
優れている。しかし、万一、ガス遮断器の内部で地絡ま
たは短絡故障が発生した場合には、保護リレーにより故
障を検出して、故障が継続しないようにしているが、保
護リレー情報のみでは故障発生したガス遮断器を特定す
ることができない。また、ガス遮断器は密閉構造である
ため、故障発生したガス遮断器を外部から目視により確
認することは困難である。このため、地絡あるいは短絡
故障の発生時には、その故障アークエネルギーによって
絶縁ガスのガス圧力が上昇するので、この圧力上昇を検
出することによってガス遮断器の故障を検出することが
ある。この故障検出装置は、従来、ガス遮断器に圧力セ
ンサを設けて、この圧力センサによって絶縁ガスの圧力
値を計測する。そして、圧力センサの出力である圧力値
と封入圧力値との差から圧力上昇値を求め、この圧力上
昇値が予め設定された監視値を越えたときに、故障と判
定するように構成されている。2. Description of the Related Art Generally, a gas circuit breaker or a circuit breaker gas section of a gas insulated switchgear is formed by housing the circuit breaker in a metal container and enclosing an insulating gas such as sulfur hexafluoride gas. Excellent in miniaturization, high reliability and safety. However, in the unlikely event that a ground fault or short-circuit fault occurs inside the gas circuit breaker, the fault is detected by the protection relay so that the fault does not continue, but the fault occurred only with the protection relay information. The gas circuit breaker cannot be specified. Further, since the gas circuit breaker has a closed structure, it is difficult to visually confirm the faulty gas circuit breaker from the outside. Therefore, when a ground fault or a short-circuit fault occurs, the gas pressure of the insulating gas rises due to the fault arc energy. Therefore, a failure of the gas circuit breaker may be detected by detecting this pressure rise. Conventionally, this failure detection device is provided with a pressure sensor in a gas circuit breaker, and the pressure sensor measures the pressure value of the insulating gas. Then, a pressure increase value is obtained from the difference between the pressure value output from the pressure sensor and the enclosed pressure value, and when the pressure increase value exceeds a preset monitoring value, it is determined that a failure has occurred. There is.
【０００３】また、ガス絶縁開閉装置においては、通
常、その内部は遮断器ガス区画や断路器ガス区画などの
複数のガス区画に区分されており、電力の安定供給の観
点から、故障が発生したガス区画以外の健全なガス区画
で、かつ電圧印加を行っても支障がないガス区画を早期
復旧し、停電時間を短くすることが必要となる。したが
って、故障区画を検出するために、故障区画検出装置が
使用される場合もあり、上記故障検出装置の出力はこの
故障区画検出装置の一入力としても利用される。Further, in the gas-insulated switchgear, the inside thereof is usually divided into a plurality of gas compartments such as a circuit breaker gas compartment and a disconnector gas compartment, and a failure has occurred from the viewpoint of stable power supply. It is necessary to shorten the power outage time by recovering the sound gas section other than the gas section that is healthy and has no trouble even when voltage is applied, in an early stage. Therefore, in order to detect the faulty section, a faulty section detecting device may be used, and the output of the faulty detecting apparatus is also used as one input of the faulty section detecting device.
【０００４】[0004]
【発明が解決しようとする課題】上記従来の故障検出装
置においては、以下の課題があった。ガス遮断器の内部
で地絡または短絡故障が発生した場合、故障アークエネ
ルギーでガス圧力が上昇する。また、故障が継続しない
ように、保護リレーが動作し、遮断器開極指令信号によ
り遮断器が開極され、この開極時の遮断器の接触子間ア
ーク、すなわち遮断器開極アークが発生し、そのアーク
エネルギーによってもガス圧力が上昇する。一方、当該
ガス遮断器以外で地絡または短絡故障が発生した場合、
当該ガス遮断器の内部の故障ではないため、故障アーク
によるガス圧力の上昇は無いが、当該ガス遮断器以外で
の故障が継続しないように、保護リレーが動作し、遮断
器開極指令信号により当該ガス遮断器が開極されるた
め、遮断器開極アークが発生し、そのアークエネルギー
によってガス圧力が上昇する。このため、圧力上昇のレ
ベル検出により故障を判定する従来の故障検出装置で
は、検出した圧力上昇が、故障アークによるものか、遮
断器開極アークによるものかの区別ができず、ガス遮断
器の故障が検出できなくなる。The above-mentioned conventional failure detection device has the following problems. If a ground fault or a short circuit fault occurs inside the gas circuit breaker, the fault arc energy causes the gas pressure to rise. In addition, the protection relay operates so that the failure does not continue, the circuit breaker is opened by the circuit breaker opening command signal, and the arc between the contactors of the circuit breaker at this opening, that is, the circuit breaker opening arc occurs. However, the arc energy also increases the gas pressure. On the other hand, if a ground fault or a short-circuit fault occurs in other than the gas circuit breaker,
Since the gas pressure does not rise due to the fault arc because it is not an internal failure of the gas circuit breaker, the protection relay operates and the circuit breaker opening command signal is sent to prevent the failure other than the gas circuit breaker from continuing. Since the gas circuit breaker is opened, a circuit breaker opening arc is generated, and the arc energy increases the gas pressure. Therefore, in the conventional failure detection device that determines a failure by detecting the level of pressure rise, it is impossible to distinguish whether the detected pressure rise is due to a fault arc or a circuit breaker opening arc, and the gas circuit breaker Failure cannot be detected.
【０００５】そこで、本発明の目的は、遮断器開極アー
クによる圧力上昇があった場合においても、故障を正し
く検出することができるガス遮断器の故障検出装置を提
供することである。Therefore, an object of the present invention is to provide a gas circuit breaker failure detection device which can correctly detect a failure even when there is a pressure rise due to a circuit breaker opening arc.
【０００６】[0006]
【課題を解決するための手段】内部に絶縁性ガスが封入
されたガス遮断器に、そのガス圧力を検出する圧力セン
サを設ける。保護リレーからの保護リレー動作信号ある
いは遮断器開極指令信号を検出する保護リレー動作検出
部を設ける。圧力センサの出力から圧力上昇を検出する
圧力上昇検出部を設ける。この圧力上昇検出部の出力と
保護リレー動作検出部の出力とから、保護リレーからの
遮断器開極指令信号による遮断器開極開始以前に圧力上
昇がある場合に、当該ガス遮断器を故障と判定する判定
部を設ける。A gas circuit breaker in which an insulating gas is sealed is provided with a pressure sensor for detecting the gas pressure. A protection relay operation detection unit that detects a protection relay operation signal from the protection relay or a circuit breaker opening command signal is provided. A pressure rise detection unit that detects a pressure rise from the output of the pressure sensor is provided. From the output of this pressure rise detection unit and the output of the protection relay operation detection unit, if there is a pressure increase before the circuit breaker opening command is started by the circuit breaker opening command signal from the protection relay, the gas circuit breaker is considered to have A determination unit for determining is provided.
【０００７】[0007]
【作用】本発明は上記の如く構成することにより、保護
リレーからの遮断器開極指令信号による遮断器の開極開
始以前で発生する故障アークによる圧力上昇の有無で故
障を判定する。したがって、故障アークによる圧力上昇
と遮断器開極時の接触子間アークによる圧力上昇とを区
別し、健全ガス遮断器は故障と判定せず、故障当該ガス
遮断器のみを故障と自動的に判定することができる。ま
た、保護リレーからの遮断器開極指令信号あるいは保護
リレー動作信号は保護リレー動作条件であり、この保護
リレー動作条件で故障を判定するため、保護リレーが動
作しない正常時の遮断器の開閉操作時の接触子間アーク
による圧力上昇が発生しても、その圧力上昇を故障とは
判定しないので、誤判定を防止することができる。According to the present invention having the above-mentioned configuration, the failure is judged by the presence or absence of the pressure increase due to the failure arc generated before the opening of the circuit breaker is started by the circuit breaker opening command signal from the protection relay. Therefore, by distinguishing the pressure rise due to the faulty arc from the pressure rise due to the arc between the contacts when the circuit breaker is opened, the sound gas circuit breaker is not determined to be faulty, but only the faulty gas circuit breaker is automatically determined to be faulty. can do. Also, the circuit breaker opening command signal or the protection relay operation signal from the protection relay is the protection relay operating condition, and the failure is judged under this protection relay operating condition.Therefore, the protection relay does not operate. Even if a pressure rise due to the arc between the contacts occurs at that time, the pressure rise is not judged to be a failure, so that an erroneous judgment can be prevented.
【０００８】[0008]
【実施例】本発明の一実施例を図１に示す。図１はガス
絶縁開閉装置の遮断器ガス区画の場合を示す。図１にお
いて、ガス絶縁開閉装置の遮断器ガス区画１の主回路の
電気的結線を単線結線図で示してあり、１１は遮断器、
１２は導体であり、遮断器１１の片側に変流器１３が設
けられ、その出力は保護リレー５に接続される。また、
保護リレー５の遮断器開極指令信号は、遮断器ガス区画
１内の遮断器１１へ出力される。遮断器ガス区画１にガ
ス圧力を検出する圧力センサ２を設け、その出力側に圧
力上昇検出部３を設ける。保護リレー５からの保護リレ
ー動作信号を検出する保護リレー動作検出部６を設け
る。なお、保護リレー５からの保護リレー動作信号とし
ては、遮断器開極指令信号でもよい。圧力上昇検出部３
の出力側に判定部４を設ける。また、保護リレー動作検
出部６の出力は判定部４へ入力される。FIG. 1 shows an embodiment of the present invention. FIG. 1 shows the case of a circuit breaker gas section of a gas insulated switchgear. In FIG. 1, the electrical connection of the main circuit of the circuit breaker gas compartment 1 of the gas insulated switchgear is shown in a single-line connection diagram, 11 is a circuit breaker,
Reference numeral 12 is a conductor, and a current transformer 13 is provided on one side of the circuit breaker 11, and its output is connected to the protection relay 5. Also,
The circuit breaker opening command signal of the protection relay 5 is output to the circuit breaker 11 in the circuit breaker gas section 1. A pressure sensor 2 for detecting the gas pressure is provided in the circuit breaker gas compartment 1, and a pressure rise detection unit 3 is provided on the output side thereof. A protection relay operation detection unit 6 that detects a protection relay operation signal from the protection relay 5 is provided. The protection relay operation signal from the protection relay 5 may be a circuit breaker opening command signal. Pressure rise detector 3
The determination unit 4 is provided on the output side of. Further, the output of the protection relay operation detection unit 6 is input to the determination unit 4.
【０００９】圧力上昇検出部３は、圧力センサ２の出力
の変化から圧力上昇値を計測し、その圧力上昇値が予め
設定された圧力上昇検出用の所定の監視値以上となった
場合に圧力上昇「有り」と判定し、その判定結果を出力
する。判定部４は、圧力上昇検出部３から出力された圧
力上昇「有り」が、保護リレー動作検出部６で検出した
保護リレー動作信号あるいは遮断器開極指令信号から求
めた、保護リレー５からの遮断器開極指令信号による遮
断器１１の開極開始以前の場合に、当該遮断器ガス区画
１を故障と判定し、その判定結果を出力する。ここで、
保護リレー５は保護リレー動作信号と遮断器開極指令信
号とを同時に出力するため、保護リレー５からの遮断器
開極指令信号による遮断器１１の開極開始は、保護リレ
ー動作検出部６で保護リレー５からの保護リレー動作信
号を検出した時点に、既知である遮断器１１の開極時間
を加えて求めることができる。なお、保護リレー５から
の遮断器開極指令信号による遮断器１１の開極開始とし
ては、遮断器１１の開極時間を加えない、保護リレー動
作検出部６で保護リレー５からの保護リレー動作信号を
検出した時点を用いてもよい。The pressure rise detecting unit 3 measures the pressure rise value from the change in the output of the pressure sensor 2, and when the pressure rise value exceeds a preset monitoring value for pressure rise detection, the pressure rise value is detected. It is determined that there is a rise, and the determination result is output. The determination unit 4 determines from the protection relay 5 that the pressure increase “present” output from the pressure increase detection unit 3 is obtained from the protection relay operation signal detected by the protection relay operation detection unit 6 or the circuit breaker opening command signal. Before the opening of the circuit breaker 11 by the circuit breaker opening command signal is started, the circuit breaker gas section 1 is determined to be in failure, and the determination result is output. here,
Since the protection relay 5 outputs the protection relay operation signal and the circuit breaker opening command signal at the same time, the protection relay operation detector 6 starts the opening of the circuit breaker 11 by the circuit breaker opening command signal from the protection relay 5. This can be obtained by adding the known contact opening time of the circuit breaker 11 to the time when the protection relay operation signal from the protection relay 5 is detected. In addition, the opening of the circuit breaker 11 by the circuit breaker opening command signal from the protection relay 5 is started, and the protection relay operation detector 6 does not add the opening time of the circuit breaker 11. The time when the signal is detected may be used.
【００１０】次に本発明の動作を説明する。なお、以
下、保護リレー動作検出部６へ入力する保護リレー５の
保護リレー動作信号あるいは遮断器開極指令信号は、保
護リレー動作信号の場合として説明する。遮断器ガス区
画１で、地絡または短絡故障が発生した場合について以
下に動作説明する。遮断器ガス区画１で故障が発生する
と、変流器１３で故障電流が検出され、保護リレー５
は、保護リレー動作信号を出力するとともに、遮断器ガ
ス区画１の遮断器１１へ遮断器開極指令信号を出力し、
遮断器ガス区画１の遮断器１１が動作して開極する。こ
のため、遮断器ガス区画１では、最初に故障アークによ
り圧力上昇する。その後、保護リレー５からの遮断器開
極指令信号により、遮断器ガス区画１の遮断器１１が開
極されるため、遮断器１１の接触子間アークが発生し、
この開極アークによって圧力上昇する。なお、遮断器１
１の接触子間アークは、保護リレー５からの遮断器開極
指令信号が出力されてから遮断器１１の開極時間後とな
る遮断器１１の開極開始時点で発生する。したがって、
保護リレー５からの遮断器開極指令信号による遮断器１
１の開極開始時点を基準にすると、その時点の以前に遮
断器ガス区画１で圧力上昇が発生し、その時点より後に
遮断器１１の接触子間アークによって圧力上昇すること
になる。Next, the operation of the present invention will be described. Hereinafter, the protection relay operation signal of the protection relay 5 or the circuit breaker opening command signal input to the protection relay operation detection unit 6 will be described as the case of the protection relay operation signal. The operation will be described below in the case where a ground fault or a short circuit failure occurs in the circuit breaker gas section 1. When a failure occurs in the circuit breaker gas section 1, a failure current is detected by the current transformer 13, and the protection relay 5
Outputs a protection relay operation signal and also outputs a circuit breaker opening command signal to the circuit breaker 11 in the circuit breaker gas section 1,
The circuit breaker 11 of the circuit breaker gas section 1 operates to open the contact. Therefore, in the circuit breaker gas section 1, the pressure rises first due to the faulty arc. Thereafter, the circuit breaker opening command signal from the protection relay 5 opens the circuit breaker 11 in the circuit breaker gas section 1, so that an arc between contacts of the circuit breaker 11 is generated,
This opening arc increases the pressure. The circuit breaker 1
The contact-to-contact arc No. 1 occurs at the opening start time of the circuit breaker 11, which is after the opening time of the circuit breaker 11 after the circuit breaker opening command signal is output from the protection relay 5. Therefore,
Circuit breaker 1 by circuit breaker opening command signal from protection relay 5
With reference to the opening start time of No. 1, the pressure rises in the circuit breaker gas section 1 before that time point, and after the time point, the pressure rises due to the inter-contact arc of the circuit breaker 11.
【００１１】圧力センサ２は、これらの圧力上昇したガ
ス圧力を検出する。圧力上昇検出部３では、圧力センサ
２の出力の変化から圧力上昇値を計測し、その圧力上昇
値と、予め設定された圧力上昇検出用の監視値とを比較
し、計測した圧力上昇値がその監視値以上となった時に
圧力上昇「有り」と判定し、その判定結果を出力する。
このため、圧力上昇検出部３は、故障アークによる圧力
上昇が発生した時点に、すなわち遮断器１１の開極開始
以前に圧力上昇「有り」を出力する。したがって、圧力
上昇検出部３から出力された圧力上昇「有り」は、保護
リレー動作検出部６で保護リレー５からの保護リレー動
作信号を検出した時点に遮断器１１の開極時間を加えて
求めた遮断器１１の開極開始以前であるため、判定部４
は、遮断器ガス区画１を故障と判定し、その判定結果を
出力する。なお、故障アークによる圧力上昇は、保護リ
レー５からの保護リレー動作信号以前に発生しているた
め、圧力上昇検出部３から出力された圧力上昇「有り」
は、保護リレー動作検出部６で保護リレー５からの保護
リレー動作信号を検出した時点以前にある。このため、
判定部４は、遮断器１１の開極時間を加えない、保護リ
レー動作検出部６で保護リレー５からの保護リレー動作
信号を検出した時点を、遮断器１１の開極開始として判
定する場合でも、その時点以前に圧力上昇検出部３から
圧力上昇「有り」が出力されているため、遮断器ガス区
画１を故障と判定し、その判定結果を出力する。以上か
ら、遮断器ガス区画１で発生した故障が正しく検出でき
る。The pressure sensor 2 detects these gas pressures that have increased in pressure. The pressure rise detection unit 3 measures a pressure rise value from a change in the output of the pressure sensor 2, compares the pressure rise value with a preset monitoring value for pressure rise detection, and measures the pressure rise value. When it becomes equal to or higher than the monitored value, it is determined that the pressure rise is “present” and the determination result is output.
Therefore, the pressure rise detection unit 3 outputs the pressure rise “present” at the time when the pressure rise due to the fault arc occurs, that is, before the opening of the circuit breaker 11 is started. Therefore, the pressure rise “present” output from the pressure rise detection unit 3 is obtained by adding the contact opening time of the circuit breaker 11 at the time when the protection relay operation detection unit 6 detects the protection relay operation signal from the protection relay 5. Since the circuit breaker 11 has not been opened yet, the determination unit 4
Determines that the circuit breaker gas section 1 is out of order and outputs the determination result. Since the pressure increase due to the fault arc has occurred before the protection relay operation signal from the protection relay 5, the pressure increase output from the pressure increase detection unit 3 is “present”.
Is before the time when the protection relay operation detector 6 detects the protection relay operation signal from the protection relay 5. For this reason,
Even when the determination unit 4 determines that the time at which the protection relay operation detection unit 6 detects the protection relay operation signal from the protection relay 5 without adding the contact opening time of the circuit breaker 11 as the start of the circuit breaker 11 opening. Since the pressure rise detection unit 3 has output the pressure rise “present” before that time, the circuit breaker gas section 1 is determined to be defective and the determination result is output. From the above, the failure occurring in the circuit breaker gas section 1 can be correctly detected.
【００１２】次に遮断器ガス区画１以外で故障が発生
し、遮断器１１が開極し、遮断器ガス区画１で遮断器開
極アークの圧力上昇のみが発生した場合について説明す
る。遮断器ガス区画１以外で故障が発生すると、変流器
１３で故障電流が検出され、保護リレー５は、保護リレ
ー動作信号を出力するとともに、遮断器ガス区画１の遮
断器１１へ遮断器開極指令信号を出力し、遮断器ガス区
画１の遮断器１１が動作して開極する。このため、遮断
器ガス区画１では、故障アークによる圧力上昇は無い
が、保護リレー５からの遮断器開極指令信号により、遮
断器ガス区画１の遮断器１１が開極するため、遮断器１
１の接触子間アークが発生し、この開極アークによって
圧力上昇する。これは、保護リレー５からの遮断器開極
指令信号による遮断器１１の開極開始時点を基準にする
と、その時点の以前に遮断器ガス区画１で圧力上昇が無
く、その時点より後に遮断器１１の接触子間アークによ
って圧力上昇することになる。このため、圧力センサ２
の出力の変化から圧力上昇値を計測して圧力上昇を検出
する圧力上昇検出部３は、遮断器１１の開極開始後に圧
力上昇「有り」を出力することになる。したがって、判
定部４では故障とする条件である、遮断器１１の開極開
始以前に圧力上昇が有るという条件が不成立となり、遮
断器ガス区画１を故障と判定しない。また、判定部４
が、遮断器１１の開極時間を加えない、保護リレー動作
検出部６で保護リレー５からの保護リレー動作信号を検
出した時点を、遮断器１１の開極開始として判定する場
合でも、その時点より後に圧力上昇「有り」が圧力上昇
検出部３から出力されるため、遮断器ガス区画１を故障
と判定しない。以上から、故障発生してない遮断器ガス
区画１で遮断器１１の開極時の接触子間アークによる圧
力上昇が発生しても、それにより故障と誤判定しないこ
とになる。Next, a case will be described in which a failure occurs outside the circuit breaker gas section 1, the circuit breaker 11 is opened, and only the pressure rise of the circuit breaker opening arc occurs in the circuit breaker gas section 1. When a failure occurs in the circuit breaker gas section 1 other than the circuit breaker gas section 1, a failure current is detected by the current transformer 13, and the protection relay 5 outputs a protection relay operation signal and opens the circuit breaker to the circuit breaker 11 in the circuit breaker gas section 1. A pole command signal is output, and the circuit breaker 11 in the circuit breaker gas section 1 operates to open the pole. Therefore, in the circuit breaker gas compartment 1, there is no pressure increase due to a fault arc, but the circuit breaker opening command signal from the protection relay 5 opens the circuit breaker 11 in the circuit breaker gas compartment 1 so that the circuit breaker 1
An arc between the contacts of No. 1 is generated, and the pressure rises due to this opening arc. This is based on the time point at which the opening of the circuit breaker 11 by the circuit breaker opening command signal from the protection relay 5 starts, and there is no pressure increase in the circuit breaker gas section 1 before that time point, and the circuit breaker after that time point. The pressure increases due to the arc between the contactors 11. Therefore, the pressure sensor 2
The pressure rise detection unit 3 that measures the pressure rise value based on the change in the output of (1) and detects the pressure rise outputs the pressure rise “present” after the opening of the circuit breaker 11 is started. Therefore, the determination unit 4 does not determine that the circuit breaker gas section 1 is faulty because the condition that a failure occurs, that is, the condition that there is a pressure increase before the opening of the circuit breaker 11 is started is not satisfied. Also, the determination unit 4
However, even when it is determined that the protection relay operation detection unit 6 detects the protection relay operation signal from the protection relay 5 without adding the contact opening time of the circuit breaker 11 as the start of the opening of the circuit breaker 11, Since the pressure rise “present” is output later from the pressure rise detector 3, the circuit breaker gas compartment 1 is not determined to be in failure. From the above, even if the pressure rise due to the arc between the contacts at the time of opening the circuit breaker 11 in the circuit breaker gas section 1 in which no failure has occurred, it will not be erroneously determined as a failure.
【００１３】以上から、遮断器ガス区画１で発生した故
障アークによる圧力上昇と遮断器１１の開極アークによ
る圧力上昇とを区別し、故障アークによる圧力上昇のみ
が検出でき、正しく故障の検出ができる。From the above, the pressure rise due to the fault arc generated in the circuit breaker gas section 1 and the pressure rise due to the opening arc of the circuit breaker 11 are distinguished, and only the pressure rise due to the fault arc can be detected, and the fault can be correctly detected. it can.
【００１４】平常時に遮断器ガス区画１の遮断器１１を
開閉操作した場合にも、接触子間アークによる圧力上昇
が発生するが、故障ではないため保護リレー５は動作し
ない。したがって、判定部４へ保護リレー動作検出部６
を介して保護リレー５からの保護リレー動作信号が入力
されないため、判定部４は故障の判定をしないことにな
り、誤って故障の出力がされない。Even when the circuit breaker 11 in the circuit breaker gas compartment 1 is opened / closed normally, the pressure rises due to the arc between the contacts, but the protection relay 5 does not operate because it is not a failure. Therefore, to the determination unit 4, the protection relay operation detection unit 6
Since the protection relay operation signal from the protection relay 5 is not input via the, the determination unit 4 does not determine the failure, and the failure is not erroneously output.
【００１５】以上、実施例は、ガス絶縁開閉装置の遮断
器ガス区画の場合について説明したが、ガス遮断器の場
合も、同様に、正しく故障を検出することができる。Although the embodiments have been described in the case of the breaker gas section of the gas insulated switchgear, the failure can be detected correctly in the case of the gas breaker as well.
【００１６】[0016]
【発明の効果】以上の通り、本発明によれば、保護リレ
ーからの遮断器開極指令信号による遮断器の開極開始以
前で発生する故障アークによる圧力上昇を検出し、故障
検出をすることになる。したがって、故障アークによる
圧力上昇と遮断器開極時の接触子間アークによる圧力上
昇とを区別し、健全ガス遮断器を故障と判定せず、故障
当該ガス遮断器を故障と正しく自動的に判定することが
できる。また、保護リレー動作条件で故障を判定してい
るため、保護リレーが動作しない正常時に遮断器の開閉
操作時の接触子間アークによる圧力上昇が発生しても、
その圧力上昇を故障とは判定せず、誤検出を防止するこ
とができる。As described above, according to the present invention, it is possible to detect a failure by detecting a pressure rise due to a failure arc that occurs before the opening of the circuit breaker is started by the circuit breaker opening command signal from the protection relay. become. Therefore, by distinguishing the pressure rise due to the fault arc from the pressure rise due to the arc between the contacts when the circuit breaker is opened, the sound gas circuit breaker is not determined to be faulty, but the faulty gas circuit breaker is automatically and correctly determined to be faulty. can do. In addition, since the failure is judged based on the protection relay operating condition, even if the pressure rises due to the arc between the contacts during the switching operation of the circuit breaker when the protection relay does not operate normally,
It is possible to prevent erroneous detection without judging the increase in pressure as a failure.
【図１】本発明の一実施例を示す図である。FIG. 1 is a diagram showing an embodiment of the present invention.
１ 遮断器ガス区画 ２ 圧力センサ ３ 圧力上昇検出部 ４ 判定部 ５ 保護リレー ６ 保護リレー動作検出部 1 Circuit Breaker Gas Section 2 Pressure Sensor 3 Pressure Rise Detection Section 4 Judgment Section 5 Protection Relay 6 Protection Relay Operation Detection Section
Claims (1)
器に設けられ、そのガス圧力を検出する圧力センサと、 保護リレーからの保護リレー動作信号あるいは遮断器開
極指令信号を検出する保護リレー動作検出部と、 前記圧力センサの出力から圧力上昇を検出する圧力上昇
検出部と、 この圧力上昇検出部の出力と前記保護リレー動作検出部
の出力とから、保護リレーからの遮断器開極指令信号に
よる遮断器開極開始以前に圧力上昇がある場合に、当該
ガス遮断器を故障と判定する判定部と、 を備えたことを特徴とするガス遮断器の故障検出装置。1. A pressure sensor which is provided in a gas circuit breaker in which an insulating gas is sealed and which detects the gas pressure, and a protection which detects a protection relay operation signal from a protection relay or a circuit breaker opening command signal. A relay operation detection unit, a pressure rise detection unit that detects a pressure rise from the output of the pressure sensor, and an output of the pressure rise detection unit and an output of the protection relay operation detection unit from the protection relay to open the circuit breaker. A failure detection device for a gas circuit breaker, comprising: a determination unit that determines that the gas circuit breaker is in failure when pressure rises before starting opening of the circuit breaker by a command signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7061535A JPH08235976A (en) | 1995-02-27 | 1995-02-27 | Failure detecting device of gas blast circuit-breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7061535A JPH08235976A (en) | 1995-02-27 | 1995-02-27 | Failure detecting device of gas blast circuit-breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08235976A true JPH08235976A (en) | 1996-09-13 |
Family
ID=13173907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7061535A Pending JPH08235976A (en) | 1995-02-27 | 1995-02-27 | Failure detecting device of gas blast circuit-breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08235976A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009516337A (en) * | 2006-09-21 | 2009-04-16 | シーメンス アクチエンゲゼルシヤフト | Method for monitoring a protective device arranged upstream of a switching device |
| JP2010034057A (en) * | 2008-07-30 | 2010-02-12 | General Electric Co <Ge> | Arc flash detection system, apparatus and method |
| JP2012060877A (en) * | 2010-09-08 | 2012-03-22 | General Electric Co <Ge> | Methods, systems, and apparatus for detecting arc flash events using light and time discrimination |
| CN105182182A (en) * | 2015-09-15 | 2015-12-23 | 国家电网公司 | Air circuit breaker calibration system |
-
1995
- 1995-02-27 JP JP7061535A patent/JPH08235976A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009516337A (en) * | 2006-09-21 | 2009-04-16 | シーメンス アクチエンゲゼルシヤフト | Method for monitoring a protective device arranged upstream of a switching device |
| JP4848015B2 (en) * | 2006-09-21 | 2011-12-28 | シーメンス アクチエンゲゼルシヤフト | Method for monitoring a protective device arranged upstream of a switching device |
| JP2010034057A (en) * | 2008-07-30 | 2010-02-12 | General Electric Co <Ge> | Arc flash detection system, apparatus and method |
| JP2012060877A (en) * | 2010-09-08 | 2012-03-22 | General Electric Co <Ge> | Methods, systems, and apparatus for detecting arc flash events using light and time discrimination |
| CN105182182A (en) * | 2015-09-15 | 2015-12-23 | 国家电网公司 | Air circuit breaker calibration system |
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