JPS60185178A - Composite breaking test circuit of breaker - Google Patents
Composite breaking test circuit of breakerInfo
- Publication number
- JPS60185178A JPS60185178A JP59040354A JP4035484A JPS60185178A JP S60185178 A JPS60185178 A JP S60185178A JP 59040354 A JP59040354 A JP 59040354A JP 4035484 A JP4035484 A JP 4035484A JP S60185178 A JPS60185178 A JP S60185178A
- Authority
- JP
- Japan
- Prior art keywords
- current
- shortcircuit
- breaker
- circuit
- frequency
- 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
Landscapes
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は遮断器の合成遮断回路に係り、特に高周波を含
む短絡電流に対する遮断器の遮断性能を検証するのに好
適な合成遮断試験回路に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a synthetic breaking circuit for a circuit breaker, and particularly to a synthetic breaking test circuit suitable for verifying the breaking performance of a circuit breaker against short circuit currents including high frequencies.
遮断器が短絡電流を遮断するとき、その遮断性能は遮断
電流の電流零点近傍での変化率ｄＩ／ｄｔｌｔ＝ｏに大
きく影響される。従って、短絡電流に高調波電流が含ま
れ、ＩｄＩ／ｄｔｌ ｉ ＝ＯＩが大きくなった場合そ
の遮断はより難しいものとなる。しかし従来の短絡試験
回路は、一般に単一の電流源であったため、高調波を含
む短絡電流を発生することが難しいという欠点があった
。When a circuit breaker interrupts a short circuit current, its interrupting performance is greatly influenced by the rate of change of the interrupting current near the current zero point dI/dtlt=o. Therefore, when the short-circuit current includes harmonic current and IdI/dtl i =OI becomes large, it becomes more difficult to interrupt the short-circuit current. However, conventional short-circuit test circuits generally have a single current source, which has the disadvantage that it is difficult to generate short-circuit currents that include harmonics.
本発明の目的は、高調波を含む短絡電流に対する遮断器
の遮断性能を検出するための合成試験回路を提供するこ
とにある。An object of the present invention is to provide a synthetic test circuit for detecting the breaking performance of a circuit breaker against short circuit currents containing harmonics.
本発明は、基本周波数の大電流（短絡電流）を供給する
電源とは別に、基本周波数よりも周波数の高い、かつＩ
ｄＩ／ｄｔｌ １＝ｏＩが基本周波数の大電流より大き
い電流を供給する電源を設け、基本周波数の電流に周波
数の高い電流を１／４サイクル以上重畳しとｌｄＩ／ｄ
ｔｌｉ＝ｏｌを大きくし、高調波を含む短絡電流を模擬
するものである。In addition to the power supply that supplies a large current (short-circuit current) at the fundamental frequency, the present invention provides
dI/dtl 1=Provide a power supply that supplies a current with oI larger than the large current at the fundamental frequency, and superimpose a high frequency current on the fundamental frequency current for 1/4 cycle or more, and ldI/d
This is to increase tli=ol and simulate a short circuit current including harmonics.
以下１本発明の一実施例を第１図、第２図、第３図によ
り説明する。高調波を含む短絡電流１を第２図に示した
回路で実現する。短絡電流の基本波電流２に相当する電
流は、短絡発電機４から、投入スイッチ５、電流調整用
インダクタンス６、補助遮断器７を通して、供試遮断器
８へ供給する。An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3. A short circuit current 1 containing harmonics is realized by the circuit shown in FIG. A current corresponding to the fundamental wave current 2 of the short circuit current is supplied from the short circuit generator 4 to the test circuit breaker 8 through the closing switch 5, the current adjustment inductance 6, and the auxiliary circuit breaker 7.
一方高調波成分は、あらかじめコンデンサ１１を充電し
ておき、この電荷をリアクトル１０．ギャップスイッチ
９、供給遮断器８から成る回路に放電しりアクドル１０
とコンデンサ１１の共振により発生させ、これを前記し
た基本波電流に重畳する。このとき、電流零点近傍の電
流の変化率１４は、模擬しようとする短絡電流の電流零
点近傍の電流の変化率３となるようコンデンサ１１の充
電電圧を調整する。ギャップスイッチ９を点弧する時期
を調整して、高調波電流の重畳を１／４サイクル程度と
することにより、高調波電流用電源の容量を小さくする
ことができる。On the other hand, for harmonic components, a capacitor 11 is charged in advance, and this charge is transferred to a reactor 10. A discharge handle 10 is connected to a circuit consisting of a gap switch 9 and a supply circuit breaker 8.
is generated by the resonance of the capacitor 11, and is superimposed on the fundamental wave current described above. At this time, the charging voltage of the capacitor 11 is adjusted so that the current change rate 14 near the current zero point becomes the current change rate 3 near the current zero point of the short circuit current to be simulated. By adjusting the timing of ignition of the gap switch 9 so that the harmonic current is superimposed on the order of 1/4 cycle, the capacity of the harmonic current power source can be reduced.
第４図は実施例である。リアクトル１５を複数個並列接
続可能なように設けておく。コンデンサｌＯの充電電圧
をＶとし、模擬しようとする高調波を含む短絡電流の変
化率３をＡとしたとき、リアクトルの値りがＶ／Ａ程度
となるように断路器１６を切換える。FIG. 4 shows an example. A plurality of reactors 15 are provided so that they can be connected in parallel. When the charging voltage of the capacitor lO is V and the rate of change 3 of the short circuit current including harmonics to be simulated is A, the disconnector 16 is switched so that the value of the reactor is approximately V/A.
第２図、第４図の実施例ではいずれも、供試遮断器が遮
断に成功した後に過渡回復電圧が現われるが、これが規
格値に比べ過大なものとならないように、抵抗１２．コ
ンデンサ１３の値を設定する。In both the embodiments shown in FIGS. 2 and 4, a transient recovery voltage appears after the test circuit breaker has successfully disconnected, but in order to prevent this from becoming excessive compared to the standard value, the resistor 12. Set the value of capacitor 13.
以上説明した実施例においては、高調波成分として単一
周波数のみを模擬しているが、高調波電流源回路として
、周波数の異なる２つ以上の回路を並列に接続し、２つ
以上の周波数成分からなる高調波電流を模擬することも
できる。In the embodiment described above, only a single frequency is simulated as a harmonic component, but as a harmonic current source circuit, two or more circuits with different frequencies are connected in parallel to simulate two or more frequency components. It is also possible to simulate harmonic currents consisting of
本発明によれば、高調波を含む短絡電流を模擬すること
ができるので、遮断器の高調波を含む短絡電流に対する
遮断性を検証することができる。According to the present invention, it is possible to simulate a short circuit current that includes harmonics, so it is possible to verify the ability of a circuit breaker to interrupt short circuit currents that include harmonics.
第１゛図は本発明の一実施例の高調波を含む短絡電流波
形図、第２図は同じく高調波を含む短絡電流を発生させ
る回路図、第３図は第２図の回路で発生させた電流の波
形図、第４図は本発明の他の実施例の回路図である。
ｌ・・・高調波を含む電流波形、２・・・基本波電流、
３・・・電流零点近傍の電流の変化率、４・・・短絡発
電機５・・・投入スイッチ、６・・・電流制限用リアク
トル、７・・・補助遮断器、８・・・供試遮断器。
代理人 弁理士 高橋明夫
隼 １ 図
第 ２ 図
／Fig. 1 is a waveform diagram of a short-circuit current including harmonics according to an embodiment of the present invention, Fig. 2 is a circuit diagram for generating a short-circuit current including harmonics, and Fig. 3 is a waveform diagram of a short-circuit current containing harmonics. FIG. 4 is a circuit diagram of another embodiment of the present invention. l...Current waveform including harmonics, 2...Fundamental wave current,
3... Rate of change of current near current zero point, 4... Short circuit generator 5... Closing switch, 6... Current limiting reactor, 7... Auxiliary circuit breaker, 8... Test sample circuit breaker. Agent Patent Attorney Akio Takahashi Hayabusa 1 Figure 2 Figure 2/
Claims (1)
を有する遮断器の試験回路において、基本周波数よりも
高い周波数で、かつ電流零点近傍での電流の変化率の絶
対値が■１のそれより大きい電流Ｉ２を供試遮断器に供
給できる電源を１個または複数個設けたことを特徴とす
る遮断器の合成遮断試験回路。■ In a circuit breaker test circuit that has a power source that supplies a current 11 at the fundamental frequency to the circuit breaker under test, the absolute value of the rate of change of the current at a frequency higher than the fundamental frequency and near the current zero point is ■1. A composite breaking test circuit for a circuit breaker, characterized in that one or more power sources capable of supplying a larger current I2 to the test circuit breaker are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59040354A JPS60185178A (en) | 1984-03-05 | 1984-03-05 | Composite breaking test circuit of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59040354A JPS60185178A (en) | 1984-03-05 | 1984-03-05 | Composite breaking test circuit of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60185178A true JPS60185178A (en) | 1985-09-20 |
Family
ID=12578293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59040354A Pending JPS60185178A (en) | 1984-03-05 | 1984-03-05 | Composite breaking test circuit of breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60185178A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011066678A1 (en) * | 2009-12-04 | 2011-06-09 | 中国电力科学研究院 | Fault current experiment detection device for direct current transmission converter valve |
| US9335366B2 (en) | 2013-08-06 | 2016-05-10 | Ge Aviation Systems Limited | Built-in testing of an arc fault/transient detector |
| WO2023231278A1 (en) * | 2022-06-02 | 2023-12-07 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Vacuum on-load tap changer test system and harmonic current source |
| WO2023231272A1 (en) * | 2022-06-02 | 2023-12-07 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method and apparatus for realizing boosting-and-injection-type harmonic current source |
| CN117269679A (en) * | 2023-08-21 | 2023-12-22 | 国网江苏省电力有限公司南京供电分公司 | Method for judging external insulation state of high-voltage circuit breaker based on fundamental wave electric field duty ratio |
-
1984
- 1984-03-05 JP JP59040354A patent/JPS60185178A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011066678A1 (en) * | 2009-12-04 | 2011-06-09 | 中国电力科学研究院 | Fault current experiment detection device for direct current transmission converter valve |
| US9335366B2 (en) | 2013-08-06 | 2016-05-10 | Ge Aviation Systems Limited | Built-in testing of an arc fault/transient detector |
| WO2023231278A1 (en) * | 2022-06-02 | 2023-12-07 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Vacuum on-load tap changer test system and harmonic current source |
| WO2023231272A1 (en) * | 2022-06-02 | 2023-12-07 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method and apparatus for realizing boosting-and-injection-type harmonic current source |
| CN117269679A (en) * | 2023-08-21 | 2023-12-22 | 国网江苏省电力有限公司南京供电分公司 | Method for judging external insulation state of high-voltage circuit breaker based on fundamental wave electric field duty ratio |
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