KR930020800A - Automatic failure breaker for track failure section - Google Patents

Automatic failure breaker for track failure section Download PDF

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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
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KR
South Korea
Prior art keywords
circuit
voltage
current
section
light load
Prior art date
Application number
KR1019920003860A
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Korean (ko)
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KR940003000B1 (en
Inventor
김종석
Original Assignee
최규복
일진전기공업 주식회사
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.)
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Application filed by 최규복, 일진전기공업 주식회사 filed Critical 최규복
Priority to KR1019920003860A priority Critical patent/KR940003000B1/en
Publication of KR930020800A publication Critical patent/KR930020800A/en
Application granted granted Critical
Publication of KR940003000B1 publication Critical patent/KR940003000B1/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency 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
    • H02H7/26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00Details of emergency protective circuit arrangements
    • H02H1/0007Details 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

선로고장구간 자동개방 차단장치Automatic failure breaker for track failure section

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)

지락 및 위상변류기회로(1)(1'), 정류회로(2)(2'), 지락 및 위상개방 레벨 선택회로(3)(3'), 개방전류 검출 회로(9), 지연회로(10), 펄스발생회로(11), 화이어링회로(12), 트립코일(17), 트립에너지 저장회로(16), 기준 전압발생회로(21)를 결합하고, 이에 전류억제회로(15)와, 돌입전류억제회로(18)와 레벨상승회로(19) 및 돌입전류 타이밍회로(20)를 갖는 섹숀어라이저 기능부(A)와; 차단레벨 선택회로(4) (4'), 지락타이밍회로(5), 차단전류 검출회로(6), 평활회로(7), 타이밍 리세트회로 (8), 위상타이밍회로(13) 및 인터록크회로(14)를 갖는 과부하 차단기능부(B)로 구성된 선로고장구간 자동개폐기에 있어서, 상기 섹숀어라이저 기능부(A)의 정류회로 (2')와 전류억제회로(15)사이에 0.5〔A〕이하의 낮은 감지전류 한계값이 설정되어 경부하 운전시에도 전원측 무전압 상태를 검출하는 무전압 검출부(30)을 구비하여서 구성됨을 특징으로 하는 선로고장구간 자동개방 차단장치.Ground and phase current transformer circuit (1) (1 '), rectifier circuit (2) (2'), ground and phase open level selection circuit (3) (3 '), open current detection circuit (9), delay circuit (10) ), The pulse generating circuit 11, the firing circuit 12, the trip coil 17, the trip energy storage circuit 16, the reference voltage generator circuit 21 is coupled to the current suppression circuit 15, A section analyzer function unit (A) having an inrush current suppressing circuit (18), a level rising circuit (19), and an inrush current timing circuit (20); Cutoff level selection circuit (4) (4 '), ground fault circuit (5), cutoff current detection circuit (6), smoothing circuit (7), timing reset circuit (8), phase timing circuit (13) and interlock In a circuit failure section automatic switchgear comprising an overload breaking function section (B) having a circuit (14), a 0.5 [between the rectifying circuit (2 ') and the current suppressing circuit (15) of the section array function (A). A] A circuit failure section automatic opening and breaking device, characterized in that it comprises a non-voltage detection unit 30 for detecting a low voltage state on the power supply side even at light load operation by setting the following low detection current limit value. 제1항에 있어서, 낮은 감지전류 한계값에 의해 경부하 운전시에도 전원측 무전압 상태를 검출하는 무전압 검출부(30)는 위상변류기(1')의 2차측 감지전류를 정류하여 출력되는 정류전압을 평활시키는 평활콘덴서(C1)와, 평활된 직류전압을 분압하는 분배저항(R2)(R3)과, 분압전압을 안정화시키는 제너다이오드(ZD1)를 통해 일정값으로 전압을 제한하는 제한전압(R4)과, 이를 통해 입력되는 전류를 증폭하는 전압증폭기(OP1)와, 이의 출력을 궤환저항(R5)을 통해 후단회로의 구동전압값으로 기준값을 설정조정하기 위한 가변소자(VR1)와, 비교값의 기준레벨을 제공하기 위한 분배저항(R7)(R8)과, 상기 전압증폭기 (OP2)의 출력값과 분배저항(R7)(R8)을 통한 기준전압값을 비교하여 후단회로를 스위칭제어하는 레벨검출 비교기(OP2)로 구성됨을 특징으로 하는 선로고장구간 자동개방 차단장치.The rectified voltage of claim 1, wherein the non-voltage detector 30, which detects a no-voltage state at the power supply side even at light load operation, rectifies the secondary sense current of the phase current transformer 1 'and outputs the rectified voltage. To limit the voltage to a constant value through a smoothing capacitor (C 1 ) for smoothing the voltage, a distribution resistor (R 2 ) (R 3 ) for dividing the smoothed DC voltage, and a zener diode (ZD 1 ) for stabilizing the divided voltage. Limiting voltage (R 4 ), voltage amplifier (OP 1 ) for amplifying the current input through it, and a variable element for setting and adjusting the reference value to the drive voltage value of the rear circuit through the feedback resistor (R 5 ) (VR 1 ), a distribution resistor (R 7 ) (R 8 ) for providing a reference level of the comparison value, a reference through the output value of the voltage amplifier (OP 2 ) and the distribution resistor (R 7 ) (R 8 ) characterized by consisting of a level detecting comparator (OP 2) for switching control of the subsequent stage circuit compares the voltage values coming from Line fault section automatic opening device for blocking. 제1항 또는 제2항에 있어서, 선로에 흐르는 전류를 검출하기 위한 수단으로 위상변류기(1')를 분압콘덴서(C10,C11)로 대체해도 가능함을 특징으로 하는 선로고장구간 자동개방 차단장치.According to claim 1 or 2 wherein the means to phase current transformer (1 ') for detecting a current flowing in the line divided capacitor line fault section automatic opening blocked, characterized by possible even replaced by (C 10, C 11) Device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920003860A 1992-03-09 1992-03-09 Automatic sectionalizing breaking switch KR940003000B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920003860A KR940003000B1 (en) 1992-03-09 1992-03-09 Automatic sectionalizing breaking switch

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Application Number Priority Date Filing Date Title
KR1019920003860A KR940003000B1 (en) 1992-03-09 1992-03-09 Automatic sectionalizing breaking switch

Publications (2)

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KR930020800A true KR930020800A (en) 1993-10-20
KR940003000B1 KR940003000B1 (en) 1994-04-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100383724B1 (en) * 2000-12-22 2003-05-14 이창영 An automatical power supply switching apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100383724B1 (en) * 2000-12-22 2003-05-14 이창영 An automatical power supply switching apparatus

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KR940003000B1 (en) 1994-04-09

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