KR930020800A - Automatic failure breaker for track failure section - Google Patents
Automatic failure breaker for track failure section Download PDFInfo
- Publication number
- KR930020800A KR930020800A KR1019920003860A KR920003860A KR930020800A KR 930020800 A KR930020800 A KR 930020800A KR 1019920003860 A KR1019920003860 A KR 1019920003860A KR 920003860 A KR920003860 A KR 920003860A KR 930020800 A KR930020800 A KR 930020800A
- Authority
- KR
- South Korea
- Prior art keywords
- circuit
- voltage
- current
- section
- light load
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
Abstract
본 발명은 부하측의 고장전류 발생시 후비보호장치와 협조하여 선로 고장구간을 분리하는 선로고장구간 자동개방 차단장치에 관한 것으로서, 이는 전원측의 무전압에 대한 판단을 전류억제회로로 명명되는 회로를 통해 변류기 2차측의 전류에 의해 형성되는 전압으로 판단하게 되어 있어 경부하시 일정전류값 이하에서는 전원측이 무전압이 아닌데도 고장구간 자동 개폐기(A.S.B.S)는 후비보호장치가 개방되어 있는 무전압 상태로 판단하여 정상적인 기능을 수행하지 못하게 될뿐만 아니라, 경부하시의 무저압으로 판단하게 되는 감지전류의 한계값은 3〔A〕정도로 높아 동작의 신뢰성을 저하시키는 종래기술의 문제점을 해소하고자 하는 것이다.The present invention relates to an automatic open circuit breaker of a line fault section that separates a line fault section in cooperation with a back protection device when a fault current on the load side occurs, which determines the voltage of the power supply side through a circuit called a current suppression circuit. It is judged as the voltage formed by the current on the secondary side. Under light load, the automatic failure switch (ASBS) is regarded as the no-voltage state in which the back protection device is open even though the power supply side is not voltageless. In addition, the limit value of the sense current, which is judged as a low voltage at light load, is about 3 [A], so as to solve the problem of the related art, which lowers the reliability of the operation.
따라서 본 발명은 부하측의 고장전류 발생시 후비보호장치와 협조하여 선로고장구간을 분리하는 선로고장구간 자동개폐기에 경부하시의 돌입전류 억제기능 수행에 대한 특성을 개선하기 위해 변류기 2차전류의 값을 증폭하는 무전압 검출부를 두어 경부하시의 무전압으로 판단하게 되는 감지전류 한계값을 0.5A 이하로 낮추게 하여 검출도록 하므로서 경부하 운전시의 고장전류가 발생할시 돌입전류 억제에 의한 오동작을 방지할 수가 있음은 물론 부하조건에 관계없이 무전압 검출에 대한 동작의 신뢰성을 더욱 향상시킬 수가 있는 효과를 제공한다.Therefore, the present invention amplifies the value of the secondary current of the current transformer to improve the characteristics of the inrush current suppression function at light load in the line failure section automatic switch that separates the line failure section in cooperation with the back protection device when a fault current on the load side occurs. It is possible to prevent the malfunction due to the inrush current suppression when the fault current during light load operation occurs by setting the no-voltage detector to lower the detection current limit value which is judged as the no-voltage under light load to 0.5A or less. In addition, the present invention provides an effect of further improving the reliability of the operation for the voltage-free detection regardless of the load condition.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명에 의한 선로고장구간 자동개폐 장치의 블록구성도.Figure 1 is a block diagram of a circuit failure section automatic switching device according to the present invention.
제2도는 본 발명장치에 적용되는 무전압 검출부의 회로도.2 is a circuit diagram of a voltage-free detection unit applied to the apparatus of the present invention.
제3도는 본 발명장치에 적용되는 무전압 검출부의 다른 실시예 회로도.3 is a circuit diagram of another embodiment of a voltage-free detection unit applied to the apparatus of the present invention.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920003860A KR940003000B1 (en) | 1992-03-09 | 1992-03-09 | Automatic sectionalizing breaking switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920003860A KR940003000B1 (en) | 1992-03-09 | 1992-03-09 | Automatic sectionalizing breaking switch |
Publications (2)
Publication Number | Publication Date |
---|---|
KR930020800A true KR930020800A (en) | 1993-10-20 |
KR940003000B1 KR940003000B1 (en) | 1994-04-09 |
Family
ID=19330160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920003860A KR940003000B1 (en) | 1992-03-09 | 1992-03-09 | Automatic sectionalizing breaking switch |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR940003000B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100383724B1 (en) * | 2000-12-22 | 2003-05-14 | 이창영 | An automatical power supply switching apparatus |
-
1992
- 1992-03-09 KR KR1019920003860A patent/KR940003000B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100383724B1 (en) * | 2000-12-22 | 2003-05-14 | 이창영 | An automatical power supply switching apparatus |
Also Published As
Publication number | Publication date |
---|---|
KR940003000B1 (en) | 1994-04-09 |
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