KR960039045A - Trip coil abnormality detection circuit of vacuum circuit breaker - Google Patents

Trip coil abnormality detection circuit of vacuum circuit breaker Download PDF

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Publication number
KR960039045A
KR960039045A KR1019950008801A KR19950008801A KR960039045A KR 960039045 A KR960039045 A KR 960039045A KR 1019950008801 A KR1019950008801 A KR 1019950008801A KR 19950008801 A KR19950008801 A KR 19950008801A KR 960039045 A KR960039045 A KR 960039045A
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KR
South Korea
Prior art keywords
coil
trip
trip coil
signal
circuit breaker
Prior art date
Application number
KR1019950008801A
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Korean (ko)
Other versions
KR100259183B1 (en
Inventor
오창균
Original Assignee
이종수
엘지산전 주식회사
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Publication date
Application filed by 이종수, 엘지산전 주식회사 filed Critical 이종수
Priority to KR1019950008801A priority Critical patent/KR100259183B1/en
Publication of KR960039045A publication Critical patent/KR960039045A/en
Application granted granted Critical
Publication of KR100259183B1 publication Critical patent/KR100259183B1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3275Fault detection or status indication
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3272Apparatus, systems or circuits therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Keying Circuit Devices (AREA)

Abstract

본 발명은 진공차단기의 트립코일 이상검출회로에 관한 것으로, 종래의 회로는 트립코일에 이상이 발생하더라도 이를 감지할 수 없기 때문에 외부에서 트립신호가 입력되어도 트립동작 즉, 선로를 차단할 수 없어 송·배전 계통에 대형전기사고가 발생할 우려가 있는 문제점이 있었다. 본 발명은 이러한 종래의 문제점을 해결하기 위해 트립코일에 흐르는 전류를 검출함으로써 트립코일의 이상유무를 즉시 알 수 있어 이상 발생시에는 진공차단기의 구동 및 트립동작을 제어함과 아울러 외부알람 신호를 출력함으로써 대형 선로사고를 방지할 수 있는 진공차단기의 트립코일 이상검출회로를 창안한 것이다.The present invention relates to a trip coil abnormality detection circuit of a vacuum circuit breaker. In the conventional circuit, even if an abnormality occurs in the trip coil, the circuit cannot be detected even if a trip signal is input from the outside. There was a problem that a large electrical accident may occur in the distribution system. The present invention immediately detects the abnormality of the trip coil by detecting the current flowing through the trip coil in order to solve such a conventional problem, and when an error occurs, by controlling the operation and trip operation of the vacuum circuit breaker and outputting an external alarm signal. The trip coil abnormality detection circuit of the vacuum circuit breaker can be prevented to prevent a large line accident.

Description

진공차단기의 트립코일 이상검출회로Trip coil abnormality detection circuit of vacuum circuit breaker

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명 진공차단기의 트립코일 이상검출회로도, 제3도는 본 발명에 있어서, 코일이상검출부의 상세회로도, 제4도는 제3도에 있어서, 각부 출력로직신호를 나타낸 도.FIG. 2 is a circuit diagram showing trip coil abnormality detection of the vacuum circuit breaker of the present invention, FIG. 3 is a detailed circuit diagram of a coil error detection unit, and FIG. 4 is a diagram showing output logic signals of each part in FIG.

Claims (3)

스프링차징을 하기 위한 스프링자칭용모터를 제어하는 모터릴레이의 전원공급을 차단하기 위한 인터록리 미트스위치와, 클로징스위치에 의해 클로징코일에 전원이 인가되어 진공차단기외부릴레이가 구동하면 온되어 클로징코일의 전원공급을 차단함으로써 트립대기상태를 만드는 안티펌프릴레이와, 트립코일에 전원을 공급함으로써 진공차단기가 트립동작을 수행할 수 있도록 하는 트립스위치로 구성된 진공차단기 회로에 있어서, 트립코일에 흐르는 전압을 감지하여 이를 기준전압과 비교하여 그에 따른 신호를 출력함으로써 트립코일의 이상 유무를 검출하는 코일이상검출부와, 상기 코일 이상 검출부에서 트립코일 이상신호가 출력되면 구동하여 트립코일에 공급되는 전압을 차단하는 차단릴레이를 더 포함하여 구성한 것을 특징으로 하는 진공차단기의 트립코일 이상검출회로.The interlock limit switch to cut off the power supply of the motor relay that controls the spring self-regulating motor for spring charging, and the closing coil is powered by the closing coil. In the vacuum circuit breaker circuit consisting of an anti-pump relay which cuts the power supply to make a trip standby state and a trip switch which supplies the power to the trip coil so that the vacuum breaker can perform the trip operation, the voltage flowing through the trip coil is sensed. By comparing this with the reference voltage and outputting the signal according to the coil abnormality detection unit for detecting the presence of trip coil abnormality, and the tripping coil trips when the trip coil abnormal signal is output from the coil abnormality detection block to cut off the voltage supplied to the trip coil Gene characterized by comprising a relay further Circuit breaker trip coil failure detecting circuit of the. 제1항에 있어서, 코일이상검출부는 트립코일에 흐르는 전류를 전압으로 변환하기 위한 저항과, 상기 저항의 출력전압을 반전시켜 출력하는 제1 및 제2반전부와, 상기 제1 및 제2반전부의 출력신호를 각기 입력받아 이를 기준전압과 비교하여 그에 따른 로직신호를 각기 출력하는 비교부와, 상기 비교부의 각 출력신호에 따라 각기 구동하여 그에 따른 로직 신호를 출력하는 제1 및 제2포토커플러와, 상기 제1 및 제2포토커플러의 출력신호를 배타적부정논리합하여 출력하는 배타적노아게이트와, 상기 배타적노아게이트의 출력신호를 일시 지연시켜 출력하는 지연부와, 상기 지연부의 출력신호에 따라 릴레이 구동신호를 출력하는 슈미트트리거의 상기 슈미트트리거의 릴레이 구동신호에 따라 온오프되어 트립코일의 전원 공급을 차단하는 차단릴레이를 구동하는 트랜지스터로 구성한 것을 특징으로 하는 진공차단기의 트립코일 이상검출회로.The coil abnormality detecting unit according to claim 1, wherein the coil abnormality detecting unit includes a resistor for converting a current flowing in the trip coil into a voltage, first and second inverting units for inverting and outputting an output voltage of the resistor, and first and second inverting units. A comparator which receives a negative output signal and compares it with a reference voltage, and outputs a logic signal according to each of the comparator, and first and second photocouplers for driving the respective output signals according to the output signals of the comparator and outputting a logic signal accordingly. An exclusive negative gate for outputting the exclusive negative logic of the output signals of the first and second photocouplers, a delay unit for temporarily delaying the output signal of the exclusive negative gate, and a relay according to the output signal of the delay unit. A shutoff relay is turned on and off according to the relay driving signal of the Schmitt trigger of the Schmitt trigger that outputs a driving signal to cut off the power supply of the trip coil. Characterized in that configured in the same transistor vacuum circuit breaker trip coil failure detecting circuit of the. 제2항에 있어서 비교부는 상기 제1반전부의 출력신호를 비반전압력 단자에 입력받아 이를 반전입력단자에 입력된 기준전압과 비교하여 그에 따른 로직신호를 출력하는 제1비교기와, 상기 제2반전부의 출력신호를 비반전 입력단자에 입력받아 이를 반전입력단자에 입력된 기준전압과 비교하여 그에 따른 로직신호를 출력하는제2비교기로 구성한 것을 특징으로 하는 진공차단기의 트립코일 이상검출회로.3. The comparator of claim 2, wherein the comparator receives the output signal of the first inverting unit from a non-voltage terminal and compares the output signal with a reference voltage input to an inverting input terminal, and outputs a logic signal corresponding thereto. And a second comparator configured to receive a negative output signal from the non-inverting input terminal and compare it with a reference voltage input to the inverting input terminal to output a logic signal according to the trip coil abnormality detection circuit of the vacuum circuit breaker. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019950008801A 1995-04-14 1995-04-14 A checking device for the trip coil of vacuum circuit breakers KR100259183B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950008801A KR100259183B1 (en) 1995-04-14 1995-04-14 A checking device for the trip coil of vacuum circuit breakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950008801A KR100259183B1 (en) 1995-04-14 1995-04-14 A checking device for the trip coil of vacuum circuit breakers

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KR960039045A true KR960039045A (en) 1996-11-21
KR100259183B1 KR100259183B1 (en) 2000-06-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100911734B1 (en) * 2007-08-31 2009-08-10 한국전력공사 The failure monitoring apparatus for trip coil of circuit breaker

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100894213B1 (en) 2007-11-14 2009-04-22 현대제철 주식회사 Apparatus and method for warning a change time of vacuum cricuit breaker in electric furnace
KR101791853B1 (en) * 2016-10-17 2017-10-31 (주)은성엔지니어링 Switchgear including monitoring breaker stroke and preventive diagnostic device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100911734B1 (en) * 2007-08-31 2009-08-10 한국전력공사 The failure monitoring apparatus for trip coil of circuit breaker

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