KR101488348B1 - Current detection circuit for main transformer of railway vehicles - Google Patents

Current detection circuit for main transformer of railway vehicles Download PDF

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KR101488348B1
KR101488348B1 KR20130117267A KR20130117267A KR101488348B1 KR 101488348 B1 KR101488348 B1 KR 101488348B1 KR 20130117267 A KR20130117267 A KR 20130117267A KR 20130117267 A KR20130117267 A KR 20130117267A KR 101488348 B1 KR101488348 B1 KR 101488348B1
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South Korea
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line
relay
overcurrent
contact
main transformer
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KR20130117267A
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Korean (ko)
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박성준
박진수
전성현
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현대로템 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The present invention relates to a current detection circuit for a main transformer of railway vehicles, and more specifically, a circuit capable of displaying an over current detection for first and second sides of a main transformer in the state that a main circuit breaker and a 25KV loop line breaker perform a breaking operation such as upon contact keep of pantograph, making and breaking of a main circuit breaker, and passing through a neutral section. According to an embodiment of the present invention, the current detection circuit for a main transformer of railway vehicles comprises: an AC over current relay 1,2 which are installed in the first and second sides of the main transformer, are energized respectively by over current protection transformer 1,2 when an over current above a reference current occurs, and open the main circuit breaker and a 25KV block switch. An AC over current relay 1a contact and an AC over current second relay 1 between 1165 line and 1000N line are connected in series. An 1a contact of the AC over current second relay for outputting an 1 side over current detection signal to a train diagnostic and control system (TDCS) is connected to a rear end of the 1165 line. An AC over current relay 2a contact and an AC over current second relay 2 between the 1165 line and the 1000N line are connected in series. An 2a contact of the AC over current second relay for outputting a 2 side over current detection signal to the TDCS is connected to the rear end of the 1165 line.

Description

철도차량의 주변압기 전류 검지회로 {Current detection circuit for main transformer of railway vehicles}BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current detection circuit for a railway vehicle,

본 발명은 철도차량의 주변압기 전류 검지회로에 관한 것으로서, 더욱 상세하게는 팬터그라프 이선시, 주회로차단기의 투입 및 차단시, 절연구간 통과시 등의 경우에 주회로차단기 및 25KV 루프라인 차단기가 차단 동작한 상태에서 주변압기 1, 2차측 과전류 검지를 현시할 수 있도록 하는 회로에 관한 것이다.The present invention relates to a main transformer current detection circuit for a railway vehicle, and more particularly, to a main transformer current detection circuit for a railway vehicle, and more particularly, The present invention relates to a circuit capable of detecting an overcurrent detection of a main transformer 1 and a secondary side in a cut-off state.

철도차량은 가선(架線)에서 급전을 하기 위한 팬터그라프가 지붕에 설치되어 있으며, 이 가선에서 팬터그라프(Pantograph)를 통하여 집전된 전기는 주회로차단기(main circuit breaker; MCB)를 경유하여 기계실 내부에 설치된 주변압기의 1차측에 25KV의 전압이 인가되고, 변압기 2차측에 설치된 견인권선과 보조권선의 보조전원장치와 축전지, 충전기 및 객차에 2차 전압을 유기하여 해당 기기에 전원을 공급하도록 구성된다.The railway car is equipped with a pantograph on the roof to feed electricity from the line, and electricity collected through the pantograph is passed through the main circuit breaker (MCB) 25KV voltage is applied to the primary side of the main transformer installed in the secondary side of the transformer and secondary voltage is applied to the secondary power source of the traction winding and the auxiliary winding installed on the secondary side of the transformer and the secondary battery of the battery, do.

상기한 철도차량의 안전성과 신뢰성 확보를 위하여 가장 중요한 것은 각 전장품의 성능특성을 확인하는 것이라고 할 수가 있다. In order to secure the safety and reliability of the above-mentioned railway vehicle, the most important thing is to confirm the performance characteristics of each electric component.

상기 주변압기(Main Transformer)는 팬터그라프를 통하여 고압권선에 외부 전원을 공급받아서 견인전동기 및 히터, 에어컨, 전등부하의 보조전원에 전력을 공급하는 장치이다The main transformer is a device that receives external power to the high voltage winding through the pantograph, and supplies power to the auxiliary motor of the traction motor, heater, air conditioner, and lamp

상기 주회로차단기는 운전 중에 주변압기 1차, 2차측 이후의 전기기기에 고장이 발생하였거나 과대전류 혹은 이상전압에 의한 장애 또는 교류교류의 방전 등 이상 발생시 전차선과 고속차량 간의 회로를 신속, 정확하게 차단하는 작용을 한다.The circuit breaker of the main circuit breaks the circuit between the car line and the high-speed car quickly and accurately when a fault occurs in the main device of the main transformer or after the secondary side, or when the fault occurs due to the excessive current or abnormal voltage, .

도 1은 본 발명의 이해를 돕기 위한 철도차량 고압회로의 일부를 보여주는 도면이다.1 is a view showing a part of a railway vehicle high-voltage circuit for facilitating understanding of the present invention.

도 1에서 동력차(PC) 상부의 팬터그라프(Pan)는 전차선의 전원을 고속차량으로 수전하는 집전장치(集電裝置)로 적당한 압력을 유지하여 전차선에 접촉하도록 작용하고 상승/하강한다.In Fig. 1, the pantograph (Pan) on the upper part of the power train (PC) is a current collecting device that collects the electric power of the electric line by a high-speed vehicle.

주회로차단기(MCB)는 상술한 바와 같이 주변압기(MTr) 1, 2차측 이후의 전기기기에 고장이 발생하였거나 과대전류 혹은 이상전압에 의한 장애 또는 교류교류의 방전 등 이상 발생시 전차선과 고속차량 간의 회로를 신속, 정확하게 차단한다.The main circuit breaker (MCB), as described above, is connected between the main line transformer (MTr) 1 and the high voltage side of the vehicle when a failure occurs in the electric device after the secondary side, a failure due to an excessive current or an abnormal voltage, It blocks the circuit quickly and accurately.

주변압기(MTr)는 집전장치가 있는 차량 하부에 있으며 팬터그라프(Pan)에서 수전한 교류 25KV의 전원을 공급받아 전압을 강압하여 주변환장치에 인가한다.The main transformer (MTr) is located at the bottom of the vehicle where the power collecting device is installed. The main transformer (MTr) receives a power of 25 kV AC supplied from the pantograph (Pan) and applies the voltage to the main converting device.

과전류 보호용 변류기(CT1)는 주회로의 주변압기(MTr) 1차측에 설치되어 과부하, 기타 고장 등에 의해 과전류가 발생할 경우 교류 과전류계전기1(ACOCR1)를 동작시켜 주회로차단기(MCB)를 개방하고 객차(T)에 설치된 25KV 차단스위치(ISW)를 개방한다.The overcurrent protection transformer (CT1) is installed on the primary side of the main transformer (MTr) of the main circuit. When the overcurrent occurs due to overload or other trouble, AC1 is operated to open the main circuit breaker (MCB) (ISW) which is installed in the terminal block (T) is opened.

과전류 보호용 변류기(CT2)는 주회로의 주변압기(MTr) 2차측에 설치되어 과부하, 기타 고장 등에 의해 과전류가 발생할 경우 교류 과전류계전기2(ACOCR2)를 동작시켜 주회로차단기(MCB)를 개방하고 객차(T)에 설치된 25KV 차단스위치(ISW)를 개방한다.
The overcurrent protection transformer (CT2) is installed on the secondary side of the main transformer (MTr) of the main circuit and opens the main circuit breaker (MCB) by operating AC Overcurrent Relay 2 (ACOCR2) when over current occurs due to overload, (ISW) which is installed in the terminal block (T) is opened.

도 2a와 도 2b는 종래 주변압기 1, 2차측 과전류 검지회로와 25KV 루프라인 차단회로이다.Figs. 2A and 2B show a conventional main transformer 1, a secondary side overcurrent detecting circuit, and a 25 kV loop line breaking circuit.

도 2a에서 철도차량에 발생되는 주회로차단기(MCB) 투입 및 차단 시에 주변압기 1, 2차측에 기준전류(예를 들어 1,400A) 이상의 전류가 순간적으로 흐르면, 교류 과전류계전기1 a접점(ACOCR1a)과 교류 과전류계전기2 a접점(ACOCR2a)이 클로즈(close)되고, 차량진단제어시스템(TDCS, Train Diagnostic and Control System) 측으로 과전류 검지신호가 출력되어 운전실 모니터에 주변압기 1, 2차측 과전류 검지가 현시된다(도 2a의 ① 동작 참조).2A, when a current exceeding a reference current (for example, 1,400A) flows instantaneously to the main transformer 1 and the secondary side at the time of inputting and interrupting the main circuit breaker (MCB) generated in the railway vehicle, the AC overcurrent relay 1 a ) And the AC overcurrent relay 2 a contact (ACOCR2a) are closed, and the overcurrent detection signal is output to the TDCS (Vehicle Diagnosis and Control System) side, and the main transformer 1 and the secondary overcurrent detection (See operation (1) in Fig. 2a).

여기서 상기 TDCS는 철도차량에 실시간으로 열차의 상태를 감지 기록하고 현시함으로서 열차운전에 필요한 제어 및 유지보수 지원 등의 기능을 수행하기 위해 설치되는 것으로, 열차 운전실에 설치되어 차량의 상태진단 및 제어를 담당하는 장치 즉 중앙제어장치(CCU, Central Control Unit), 객차에 장착되어 객차의 상태진단 및 제어를 담당하는 장치(VCU, Vehicle Control Unit) 등을 포함한다.The TDCS is installed to perform functions such as control and maintenance support necessary for train operation by sensing and recording the state of a train in real time on a railroad vehicle and is installed in a train cab to diagnose and control the state of the vehicle A central control unit (CCU), and a device (VCU, Vehicle Control Unit) for diagnosing and controlling the condition of the carriage mounted on the carriage.

주변압기 1, 2차측에 기준전류(예를 들어 1,400A) 이상의 전류가 순간적으로 흐르다가 다시 기준전류 이하의 전류가 흐르면, 각 a접점(ACOCR1a,ACOCR2a)이 다시 오픈(open)된다.When a current equal to or greater than the reference current (for example, 1,400A) flows instantaneously to the main transformer 1 and the secondary side and a current equal to or smaller than the reference current flows again, each of the a-contacts (ACOCR1a and ACOCR2a) is opened again.

이와 같은 동작이 각 a접점(ACOCR1a,ACOCR2a)의 뒷단에 연결된 교류 과전류제2계전기1(ACOCRR1)과 교류 과전류제2계전기2(ACOCRR2)를 여자할 수 있는 동안 전압을 인가하여 충분한 전류를 흘러주어야만, 도 2b에 도시된 교류 과전류제2계전기1 접점(ACOCRR1s)과 교류 과전류제2계전기2 접점(ACOCRR2s)이 동작하여 클로즈되고, 그 뒷단의 25KV 루프라인차단기 계전기(ISMCBR)가 여자되어(도 2b의 ① 동작 참조) 루프라인차단기가 개방된다.Such an operation must flow a sufficient current by applying a voltage while exciting the AC over-current second relay 1 (ACOCRR1) and the AC over-current second relay 2 (ACOCRR2) connected to the rear ends of the respective a-contacts (ACOCR1a and ACOCR2a) , The AC overcurrent second relay 1 contact (ACOCRR1s) and the AC overcurrent second relay 2 contact (ACOCRR2s) shown in FIG. 2B operate and close and the rear 25KV loop line breaker relay (ISMCBR) is excited The loop line breaker is opened.

그런데 기준전류 이상의 전류가 순간적으로 흐르다가 다시 정상적으로 전류가 흐르면 교류 과전류제2계전기1(ACOCRR1)과 교류 과전류제2계전기2(ACOCRR2)가 여자되지 않고(도 2a의 ② 동작 참조), 따라서 도 2b의 교류 과전류제2계전기1 접점(ACOCRR1s)과 교류 과전류제2계전기2 접점(ACOCRR2s)이 오픈되어 25KV 계전기(ISMCBR)가 여자되지 않으며, 이에 따라 루프라인차단기가 개방(차단)되지 않는다.However, if the current over the reference current flows instantaneously and then the current flows normally again, the AC overrunning second relay 1 (ACOCRR1) and the AC overcurrent second relay 2 (ACOCRR2) are not excited (ACOCRR1s) and AC overcurrent (ACOCRR2s) are opened and the 25KV relay (ISMCBR) is not energized, so that the loop line breaker is not opened (blocked).

즉, 주변압기(MTr) 1, 2차측에 기준전류 이상의 과전류가 순간적으로 발생하면, 교류 과전류계전기1 a접점(ACOCR1a)과 교류 과전류계전기2 a접점(ACOCR2a)이 클로즈되고, TDCS 측으로 과전류 검지신호가 출력되어 운전실 모니터에 주변압기 1, 2차측 과전류 검지가 현시되지만, 실제 차량의 보호회로 동작하는 주회로차단기와 25KV 루프라인차단기는 동작하지 않는다.That is, when an overcurrent more than the reference current instantaneously occurs on the secondary side of the main transformer (MTr) 1, the AC overcurrent relay 1 a contact (ACOCR1a) and the AC overcurrent relay 2 a contact (ACOCR2a) are closed and the overcurrent detection signal And the main transformer 1 and secondary overcurrent detection are displayed on the cab monitor. However, the main circuit breaker and the 25KV loop line circuit breaker, which operate the protection circuit of the actual vehicle, do not operate.

결국, 철도차량의 실제 운행 중 팬터그라프 이선시, 주회로차단기의 투입 및 차단시, 절연구간 통과시 등의 경우에 주변압기 1차측에 순간적인 임펄스 과전류가 발생 후 사라져, TDCS 모니터에 주변압기 1차측 과전류가 현시되나, 실제 차량의 보호회로인 주회로차단기 및 25KV 루프라인차단기는 동작하지 않는 문제점이 있었다.As a result, instantaneous impulse overcurrent occurs at the primary side of the main transformer when the pantograph is turned on, when the main circuit breaker is turned on or off, when it passes through the insulation section, etc., and the main transformer 1 However, the main circuit breaker and the 25-kV loop line circuit breaker, which are the protection circuits of the actual vehicle, do not operate.

국내공개특허 제10-2012-0061200호(2012년06월13일)Korean Patent Laid-Open No. 10-2012-0061200 (June 13, 2012)

본 발명은 상술한 문제점을 해결하기 위하여 안출된 것으로서, 차량 제어 로직으로 주회로차단기 및 25KV 루프라인차단기가 동작하지 않은 상태에서 주변압기 1, 2차측 과전류 검지가 기록되지 않도록 하는 철도차량의 주변압기 전류 검지회로를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a main transformer and a main transformer of a railway vehicle, which prevent the overcurrent detection of the secondary transformer from being recorded in a state where the main circuit breaker and the 25- And to provide a current detection circuit.

상술한 목적을 달성하기 위한 본 발명의 실시예에 따른 철도차량의 주변압기 전류 검지회로는 주변압기 1, 2차측에 설치되어 기준전류 이상의 과전류가 발생하는 경우 과전류 보호용 변류기1, 2에 의해 각각 여자되어 주회로차단기 및 25KV 차단스위치를 개방하는 교류 과전류계전기1, 2를 구비하는 철도차량의 주변압기 전류 검지회로에 있어서;According to an aspect of the present invention, there is provided a main transformer current detection circuit for a railway vehicle, comprising: a main transformer; a current transformer installed in a secondary side of the transformer, for overcurrent protection, 1. A main transformer current detection circuit for a railway vehicle having an AC overcurrent relay (1, 2) for opening a main circuit breaker and a 25 KV breaking switch, the circuit comprising:

1165라인과 1000N라인 사이에 교류 과전류계전기1 a접점과 교류 과전류제2계전기1이 직렬 연결되고, 차량진단제어시스템(TDCS)에 1차측 과전류 검지 신호를 출력하는 교류 과전류제2계전기1 a접점이 1165라인의 뒷단에 연결되고,The AC overcurrent relay 1 a is connected in series between the 1165 line and the 1000N line and the AC overcurrent 2 relay 1 is connected in series and the AC overcurrent relay 1 a contact for outputting the overcurrent detection signal on the primary side is connected to the vehicle diagnosis control system (TDCS) Connected to the rear end of the 1165 line,

상기 1165라인과 1000N라인 사이에 교류 과전류계전기2 a접점과 교류 과전류제2계전기2가 직렬 연결되고, 상기 TDCS에 2차측 과전류 검지 신호를 출력하는 교류 과전류제2계전기2 a접점이 1165라인의 뒷단에 연결되는 것을 특징으로 한다.The AC overcurrent relay 2 a contact and the AC overcurrent second relay 2 are connected in series between the 1165 line and the 1000N line and the AC overcurrent second relay 2 a contact for outputting the secondary overcurrent detection signal to the TDCS is connected to the back side of 1165 lines And the like.

또한, 상기 1165라인에 교류 과전류제2계전기2 접점이 연결되어 1165라인과 1000N라인 사이에 연결된 1166A라인에 연결되고, 그 1165라인의 뒷단에 교류 과전류제2계전기1 접점이 연결되어 상기 1166A라인에 연결되며, 상기 1166A라인에는 25KV 루프라인차단기 계전기가 연결되는 것을 특징으로 한다.The 1165 line is connected to the 1166A line connected between the 1165 line and the 1000N line and the AC overcurrent 2 relay 1 contact is connected to the 1165 line, and the AC overcurrent second relay 1 contact is connected to the 1165 line, And a 25KV loop line breaker relay is connected to the 1166A line.

또한, 1144라인과 1191라인 사이에 교류 과전류제2계전기1 접점과 교류 과전류제2계전기2 접점이 각각 연결되고, 상기 1191라인에서 분기되는 1191A라인이 객차에 연장되어 상기 1191A라인에서 분기되는 1193라인에 25KV계전기가 연결되며, 1171L라인과 1171M라인에는 25KV계전기 a접점이 각각 연결되어 상기 25KV 차단스위치가 연결되는 것을 특징으로 한다.An AC overcurrent second relay 1 contact and an AC overcurrent second relay 2 contact are connected between lines 1144 and 1191 respectively. An 1191A line extending from the 1191 line is connected to the 1193A line extending from the 1191A line, And the 25KV relay is connected to the 1171L line and the 1171M line, respectively, so that the 25KV cut-off switch is connected.

또한, 상기 TDCS는 과전류 검지 신호가 입력되고 일정시간이 경과한 후, 고장으로 판단하여 모니터에 과전류 검지를 현시하는 것을 특징으로 한다.
The overcurrent detection signal is input to the TDCS, and after a predetermined time has elapsed, it is determined that a fault has occurred and the overcurrent detection is displayed on the monitor.

본 발명의 실시예에 따른 철도차량은 상술한 어느 하나의 주변압기 전류 검지회로를 구비한다.The railway vehicle according to the embodiment of the present invention includes any one of the main transformer current detection circuits described above.

상술한 과제의 해결 수단에 의하면, 차량 제어 로직으로 팬터그라프 이선시, 주회로차단기의 투입 및 차단시, 절연구간 통과시 등의 경우에 주회로차단기 및 25KV 루프라인 차단기가 동작하지 않은 상태에서 주변압기 1, 2차측 과전류 검지가 기록되지 않도록 할 수 있다.According to the means for solving the above-mentioned problems, when the main control circuit breaker and the 25-kV loop line circuit breaker are not operated when the pantograph is switched to the vehicle control logic, when the main circuit breaker is turned on or off, The overcurrent detection of the transformer 1 and the secondary side can be prevented from being recorded.

도 1은 본 발명의 이해를 돕기 위한 철도차량 고압회로의 일부를 보여주는 도면이다.
도 2a와 도 2b는 종래 주변압기 1, 2차측 과전류 검지회로와 25KV 루프라인 차단회로이다.
도 3a와 도 3b는 본 발명에 따른 주변압기 1, 2차측 과전류 검지회로와 25KV 루프라인 차단회로이다.
도 4는 본 발명에 따른 25KV 차단스위치 동작 조건 회로이다.1 is a view showing a part of a railway vehicle high-voltage circuit for facilitating understanding of the present invention.
Figs. 2A and 2B show a conventional main transformer 1, a secondary side overcurrent detecting circuit, and a 25 kV loop line breaking circuit.
3A and 3B are a main transformer 1, a secondary side overcurrent detecting circuit, and a 25-kV loop line breaking circuit according to the present invention.
4 is a circuit diagram of a 25 KV shutdown switch according to the present invention.

이하 본 발명의 실시예에 대하여 첨부된 도면을 참고로 그 구성 및 작용을 설명하기로 한다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

도면들 중 동일한 구성요소들에 대해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 참조번호 및 부호들로 나타내고 있음에 유의해야 한다.It is to be noted that the same components of the drawings are denoted by the same reference numerals and symbols as possible even if they are shown in different drawings.

하기에서 본 발명을 설명함에 있어, 관련된 공지 기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략할 것이다.In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

또한, 어떤 부분이 어떤 구성요소를 "포함"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다.
Also, when a part is referred to as "including " an element, it does not exclude other elements unless specifically stated otherwise.

도 3a와 도 3b는 본 발명에 따른 주변압기 1, 2차측 과전류 검지회로와 25KV 루프라인 차단회로이다.3A and 3B are a main transformer 1, a secondary side overcurrent detecting circuit, and a 25-kV loop line breaking circuit according to the present invention.

도 3a에 도시된 바와 같이 1165라인과 1000N라인 사이에 교류 과전류계전기1 a접점(ACOCR1a)과 교류 과전류제2계전기1(ACOCRR1)이 직렬 연결되고, 교류 과전류제2계전기1 a접점(ACOCRR1a)이 그 뒷단의 1165라인에 연결되어 TDCS에 1차측 과전류 검지 신호를 출력한다.(ACOCR1a) and the AC overcurrent second relay 1 (ACOCRR1) are connected in series between the 1165 line and the 1000N line, and the AC overcurrent second relay 1 a contact (ACOCRR1a) is connected in series between the first overcurrent relay And is connected to the 1165 line at the rear end to output a primary side overcurrent detection signal to the TDCS.

이와 마찬가지로 1165라인과 1000N라인 사이에 교류 과전류계전기2 a접점(ACOCR2a)과 교류 과전류제2계전기2(ACOCRR2)가 직렬 연결되고, 교류 과전류제2계전기2 a접점(ACOCRR2a)이 그 뒷단의 1165라인에 연결되어 TDCS에 2차측 과전류 검지 신호를 출력한다.Similarly, the AC overcurrent relay 2 a contact (ACOCR 2 a) and the AC overcurrent second relay 2 (ACOCRR 2) are connected in series between the 1165 line and the 1000 N line, and the AC overcurrent second relay 2 a contact (ACOCRR 2 a) And outputs a secondary side overcurrent detection signal to the TDCS.

상기 교류 과전류계전기1 a접점(ACOCRa)은 도 1에서 기설명한 주변압기(MTr) 1차측에 설치되는 과전류 보호용 변류기(CT1)에 연결되어 과전류가 발생시 동작하는 교류 과전류계전기1(ACOCR)의 여자시 클로즈된다.The AC overcurrent relay 1 a contact (ACOCRa) is connected to an overcurrent protection current transformer (CT1) installed on the primary side of the main transformer (MTr) described in FIG. 1 and is connected to an AC overcurrent relay 1 Closed.

이와 마찬가지로, 교류 과전류계전기2 a접점(ACOCR2a)은 도 1에서 기설명한 주변압기(MTr) 2차측에 설치되는 과전류 보호용 변류기(CT2)에 연결되어 과전류가 발생시 동작하는 교류 과전류계전기2(ACOCR2)의 여자시 클로즈된다.Similarly, the AC overcurrent relay 2 a contact (ACOCR 2 a) is connected to the overcurrent protection current transformer CT 2 provided on the secondary side of the main transformer (MTr) described in FIG. 1, and is connected to the AC overcurrent relay 2 The woman is closed at the time.

도 3b에 도시된 바와 같이 상기 1165라인에 25KV 차단스위치 a접점(ISWa)과 교류 과전류제2계전기2 접점(ACOCRR2s)이 차례로 연결되어 1165라인과 1000N라인 사이에 연결된 1166A에 연결되고, 그 뒷단의 1165라인에 교류 과전류제2계전기1 접점(ACOCRR1s)이 연결되어 상기 1166A에 연결되며, 상기 1166A라인에는 25KV 루프라인차단기 계전기(ISMCBR)가 구비된다.
As shown in FIG. 3B, the 25KV cut-off switch a contact ISWa and the AC over-current second relay 2 contact ACOCRR2s are sequentially connected to the 1165 line and connected to the 1166A connected between the 1165 line and the 1000N line, (ACOCRR1s) is connected to the AC over-current secondary relay 1 1165 line, and the 1166A line is provided with a 25-kV loop line circuit breaker relay (ISMCBR).

상술한 구성에서 주변압기(MTr) 1, 2차측에 기준전류 이상의 과전류가 발생하면 과전류 보호용 변류기(CT1)가 교류 과전류계전기1(ACOCR1)을 여자시키고, 과전류 보호용 변류기(CT2)가 교류 과전류계전기2(ACOCR2)를 여자시켜(도 1 참조), 교류 과전류계전기1 a접점(ACOCR1a)과 교류 과전류계전기2 a접점(ACOCR2a)이 클로즈된다.When the overcurrent exceeding the reference current occurs in the secondary winding of the main transformer MTr 1 in the above-described configuration, the overcurrent protection current transformer CT1 excites the AC overcurrent relay 1 (ACOCR1) and the overcurrent protection current transformer CT2 excites the AC overcurrent relay 2 (ACOCR2a) is energized (see Fig. 1), and the AC overcurrent relay 1a contact (ACOCR1a) and the AC overcurrent relay 2a contact (ACOCR2a) are closed.

이에 따라 1165B라인과 1165C라인에 전류가 흐르고 교류 과전류제2계전기1(ACOCRR1)과 교류 과전류제2계전기2(ACOCRR2)에 전압이 인가된다.As a result, current flows through the 1165B line and the 1165C line, and voltage is applied to the AC over-current second relay 1 (ACOCRR1) and the AC over-current second relay 2 (ACOCRR2).

이때 만약에 과전류가 순간적으로 발생하였다가 사라지면 바로 교류 과전류계전기1 a접점(ACOCR1a)과 교류 과전류계전기2 a접점(ACOCR2a)이 오픈되어 교류 과전류제2계전기1(ACOCRR1)과 교류 과전류제2계전기2(ACOCRR2)에는 두 제2계전기(ACOCRR1,ACOCRR2)가 충분히 동작할 수 있는 시간 보다 짧게 전압이 인가되어 여자되지 않는다.(ACOCR1a) and the AC overcurrent relay (ACOCR2a) are opened and the AC overcurrent 2 relay 1 (ACOCRR1) and the AC overcurrent 2 relay 2 (ACOCR1a) are opened when the overcurrent momentarily occurs and disappears. (ACOCRR2) is not energized by applying a voltage shorter than the time for which the two second relays (ACOCRR1, ACOCRR2) can operate sufficiently.

따라서 그 뒷단의 1665라인에 연결된 교류 과전류제2계전기1 a접점(ACOCRR1a)과 교류 과전류제2계전기2 a접점(ACOCRR2a)이 오픈되어 1165H라인과 1165J라인에는 전류가 흐르지 않고, 이에 따라 TDCS에서 과전류 검지 신호가 출력되지 않는다.Therefore, the AC over current (ACOCRR1a) and the AC overcurrent 2 relay (ACOCRR2a) are opened to the 1165H line and the 1165J line connected to the 1665 line at the rear end, so that the overcurrent The detection signal is not output.

만약 과전류가 오랫동안 지속적으로 발생하면, 교류 과전류계전기1 a접점(ACOCR1a)과 교류 과전류계전기2 a접점(ACOCR2a)이 클로즈 상태를 유지하여 교류 과전류제2계전기1(ACOCRR1)과 교류 과전류제2계전기2(ACOCRR2)에 동작할 수 있는 충분한 시간 동안 전압이 인가되어 여자된다(도 3a의 ① 동작).If the overcurrent continues for a long time, the AC overcurrent relay 1 a contact (ACOCR1a) and the AC overcurrent relay 2 a contact (ACOCR2a) are kept closed and the AC overcurrent 2 relay 1 (ACOCRR1) and the AC overcurrent 2 relay 2 (ACOCRR2) for a sufficient period of time (operation (1) in Fig. 3A).

이에 따라 그 뒷단의 1665라인에 연결된 교류 과전류제2계전기1 a접점(ACOCRR1a)과 교류 과전류제2계전기 a접점(ACOCRR2a)이 클로즈되어 1165H라인과 1165J라인에는 전류가 흐르고, 따라서 TDCS에서 과전류 검지 신호가 출력된다(도 3a의 ② 동작).As a result, current flows through the 1165H line and the 1165J line due to the closing of the AC over-current secondary relay 1 a contact (ACOCRR1a) and the AC over-current secondary relay a contact (ACOCRR2a) connected to the rear 1665 line, (Operation (2) in Fig. 3A).

또한, 교류 과전류제2계전기1(ACOCRR1)과 교류 과전류제2계전기2(ACOCRR2)가 여자됨으로 인해 도 3b에서 교류 과전류제2계전기2 접점(ACOCRR2s)이 클로즈되고 교류 과전류제2계전기1 접점(ACOCRR1s)이 클로즈되어(도 3b의 ①, ② 동작), 1166A라인을 통해 전류가 흘러 25KV 루프라인차단기 계전기(ISMCBR)가 여자되며, 이에 따라 25KV 루프라인차단기와 주회로차단기가 개방된다.3B, the second overcurrent relay 2 contact (ACOCRR2s) is closed and the AC overcurrent second relay 1 contact (ACOCRR1s) is closed in FIG. 3B because the second overcurrent relay 2 (ACOCRR1) and the second overcurrent relay 2 ) Is closed (operation (1), (2) in FIG. 3B), a current flows through the 1166A line to excite the 25KV loop line breaker relay (ISMCBR), thereby opening the 25KV loop line breaker and main circuit breaker.

이때 상기 TDCS는 내부 소프트웨어적으로 일정시간 동안(예를 들어 1초 이상) 값을 하이(high)로 유지하여 실제로 주회로차단기가 차단(개방)된 상태가 1초 이상 유지되는 경우 고장으로 판단하여 모니터에 현시한다.
At this time, the TDCS keeps the value of the TDCS high for a predetermined time (for example, one second or more) in accordance with the internal software, and judges that the main circuit breaker is shut down (opened) Display on the monitor.

도 4는 본 발명에 따른 25KV 차단스위치 동작 조건 회로이다.4 is a circuit diagram of a 25 KV shutdown switch according to the present invention.

도 4에 도시된 바와 같이 1144라인과 1191라인 사이에는 교류 과전류제2계전기1 접점(ACOCRR1s)과 교류 과전류제2계전기2 접점(ACOCRR2s)이 각각 연결되고 상기 1191라인에서 분기되는 1191A라인(25KV 차단스위치 절연)이 8호 객차(T)에 연장되어 상기 1191A라인에서 분기되는 1193라인에 25KV계전기(ISR)가 연결된다.4, the AC over-current second relay 1 contact (ACOCRR1s) and the AC over-current second relay 2 contact (ACOCRR2s) are connected between the 1144 line and the 1191 line, and the 1191A line Switch isolation) is extended to the No. 8 carriage T and the 25KV relay (ISR) is connected to the 1193 line branching from the 1191A line.

또한, 1171L라인과 1171M라인에는 25KV계전기 a접점(ISRa)이 각각 연결되어 25KV 차단스위치(ISW)에 연결된다.
In addition, the 1171L line and the 1171M line are connected to the 25KV relay a (ISRa) and the 25KV isolation switch (ISW), respectively.

상술한 구성에서 도 3a의 교류 과전류제2계전기1(ACOCRR1)과 교류 과전류제2계전기2(ACOCRR2)가 여자되는 경우 교류 과전류제2계전기1 접점(ACOCRR1s)과 교류 과전류제2계전기2 접점(ACOCRR2s)이 클로즈되어 1191A라인과 1193라인에 전류가 흘러 25KV계전기(ISR)가 여자된다.In the above-described configuration, when the AC overcurrent 2 relay 1 (ACOCRR1) and the AC overcurrent 2 relay 2 (ACOCRR2) are energized, the AC overcurrent 2 relay 1 contact (ACOCRR1s) and the AC overcurrent 2 relay 2 contact (ACOCRR2s ) Is closed and a current flows through lines 1191A and 1193 to excite the 25KV relay (ISR).

이에 따라 25KV계전기 a접점(ISRa)이 클로즈되어 25KV 차단스위치(ISW)가 개방된다.
As a result, the 25 kV relay a contact (ISRa) is closed and the 25 kV disconnecting switch (ISW) is opened.

이상에서 본 발명에 대한 기술 사상을 첨부 도면과 함께 서술하였지만, 이는 본 발명의 바람직한 실시예를 예시적으로 설명한 것이지 본 발명을 한정하는 것은 아니다. 또한, 이 기술 분야의 통상의 지식을 가진 자라면 누구나 본 발명의 기술 사상의 범주를 이탈하지 않는 범위 내에서 다양한 변형 및 모방이 가능함은 명백한 사실이다.Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. In addition, it is a matter of course that various modifications and variations are possible without departing from the scope of the technical idea of the present invention by anyone having ordinary skill in the art.

ACOCR1,ACOCR2: 교류 과전류계전기
ACOCRR1, ACOCRR2: 교류 과전류제2계전기
ISW: 차단스위치 MCB: 주회로차단기
MTr: 주변압기 Pan: 팬터그라프ACOCR1, ACOCR2: AC Overcurrent Relay
ACOCRR1, ACOCRR2: AC over-current secondary relay
ISW: disconnect switch MCB: main circuit breaker
MTr: Main transformer Pan: Pantograph

Claims (5)

주변압기 1, 2차측에 설치되어 기준전류 이상의 과전류가 발생하는 경우 과전류 보호용 변류기1, 2에 의해 각각 여자되어 주회로차단기 및 25KV 차단스위치를 개방하는 교류 과전류계전기1, 2를 구비하는 철도차량의 주변압기 전류 검지회로에 있어서;
1165라인과 1000N라인 사이에 교류 과전류계전기1 a접점과 교류 과전류제2계전기1이 직렬 연결되고, 차량진단제어시스템(TDCS)에 1차측 과전류 검지 신호를 출력하는 교류 과전류제2계전기1 a접점이 1165라인의 뒷단에 연결되고,
상기 1165라인과 1000N라인 사이에 교류 과전류계전기2 a접점과 교류 과전류제2계전기2가 직렬 연결되고, 상기 TDCS에 2차측 과전류 검지 신호를 출력하는 교류 과전류제2계전기2 a접점이 1165라인의 뒷단에 연결되는 것을 특징으로 하는 철도차량의 주변압기 전류 검지회로.A main transformer 1, and an overcurrent relay 1, 2 provided on the secondary side for exciting the main circuit breaker and the 25KV cut-off switch by being excited by the over-current protection current transformers 1, 2 when an over- A main transformer current detection circuit comprising:
The AC overcurrent relay 1 a is connected in series between the 1165 line and the 1000N line and the AC overcurrent 2 relay 1 is connected in series and the AC overcurrent relay 1 a contact for outputting the overcurrent detection signal on the primary side is connected to the vehicle diagnosis control system (TDCS) Connected to the rear end of the 1165 line,
The AC overcurrent relay 2 a contact and the AC overcurrent second relay 2 are connected in series between the 1165 line and the 1000N line and the AC overcurrent second relay 2 a contact for outputting the secondary overcurrent detection signal to the TDCS is connected to the back side of 1165 lines Wherein the main transformer current detection circuit is connected to the main transformer current detection circuit of the railway car. 제1항에 있어서,
상기 1165라인에 교류 과전류제2계전기2 접점이 연결되어 1165라인과 1000N라인 사이에 연결된 1166A라인에 연결되고, 그 1165라인의 뒷단에 교류 과전류제2계전기1 접점이 연결되어 상기 1166A라인에 연결되며, 상기 1166A라인에는 25KV 루프라인차단기 계전기가 연결되는 것을 특징으로 하는 철도차량의 주변압기 전류 검지회로.The method according to claim 1,
The AC overcurrent second relay 2 contact is connected to the 1165 line and is connected to the 1166A line connected between the 1165 line and the 1000N line and the AC overcurrent second relay 1 contact is connected to the rear end of the 1165 line and is connected to the 1166A line , And a 25KV loop line breaker relay is connected to the line 1166A. 제1항에 있어서,
1144라인과 1191라인 사이에 교류 과전류제2계전기1 접점과 교류 과전류제2계전기2 접점이 각각 연결되고, 상기 1191라인에서 분기되는 1191A라인이 객차에 연장되어 상기 1191A라인에서 분기되는 1193라인에 25KV계전기가 연결되며, 1171L라인과 1171M라인에는 25KV계전기 a접점이 각각 연결되어 상기 25KV 차단스위치가 연결되는 것을 특징으로 하는 철도차량의 주변압기 전류 검지회로.The method according to claim 1,
An AC overcurrent second relay 1 contact and an AC overcurrent second relay 2 contact are connected between lines 1144 and 1191 respectively and an 1191A line branching from the 1191 line is extended to the carriage so that 1193 lines branched from the 1191A line are divided into 25KV And the 25KV relay a is connected to the 1171L line and the 1171M line, respectively, and the 25KV cutoff switch is connected to the 1171L line and the 1171M line. 제1항에 있어서,
상기 TDCS는 과전류 검지 신호가 입력되고 일정시간이 경과한 후, 고장으로 판단하여 모니터에 과전류 검지를 현시하는 것을 특징으로 하는 철도차량의 주변압기 전류 검지회로.The method according to claim 1,
Wherein the TDCS judges that the overcurrent detection signal is inputted after a lapse of a predetermined time and displays an overcurrent detection on the monitor. 제1항 내지 제4항 중 어느 한 항에 기재된 주변압기 전류 검지회로를 구비하는 철도차량.A railway vehicle comprising the main transformer current detection circuit according to any one of claims 1 to 4.
KR20130117267A 2013-10-01 2013-10-01 Current detection circuit for main transformer of railway vehicles KR101488348B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108710017A (en) * 2018-05-03 2018-10-26 南京蓝园精瑞电气有限公司 It is a kind of that electricity and measurement switching apparatus and system are taken based on single magnetic loop
CN108790948A (en) * 2018-08-24 2018-11-13 成都尚华电气有限公司 A kind of electric railway AT institutes bypass breaker measure and control device and its investigating method
KR102468562B1 (en) 2022-05-19 2022-11-17 김영동 Device for diagnosing the condition of main transformer for rail vehicles
KR20230081255A (en) 2021-11-30 2023-06-07 김영동 Probe device r of railway vehicles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101306109B1 (en) 2012-04-30 2013-09-09 현대로템 주식회사 Current detecting circuit for railway car

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101306109B1 (en) 2012-04-30 2013-09-09 현대로템 주식회사 Current detecting circuit for railway car

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108710017A (en) * 2018-05-03 2018-10-26 南京蓝园精瑞电气有限公司 It is a kind of that electricity and measurement switching apparatus and system are taken based on single magnetic loop
CN108710017B (en) * 2018-05-03 2024-04-02 深圳市蓝希望电子有限公司 Electricity taking and measuring switching device and system based on single magnetic loop
CN108790948A (en) * 2018-08-24 2018-11-13 成都尚华电气有限公司 A kind of electric railway AT institutes bypass breaker measure and control device and its investigating method
CN108790948B (en) * 2018-08-24 2023-07-28 成都尚华电气有限公司 Measuring and controlling device and measuring and controlling method for bypass breaker of electrified railway AT
KR20230081255A (en) 2021-11-30 2023-06-07 김영동 Probe device r of railway vehicles
KR102468562B1 (en) 2022-05-19 2022-11-17 김영동 Device for diagnosing the condition of main transformer for rail vehicles

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