KR100900469B1 - Uninterruptable changing machine for eletric device - Google Patents

Uninterruptable changing machine for eletric device Download PDF

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KR100900469B1
KR100900469B1 KR1020070029722A KR20070029722A KR100900469B1 KR 100900469 B1 KR100900469 B1 KR 100900469B1 KR 1020070029722 A KR1020070029722 A KR 1020070029722A KR 20070029722 A KR20070029722 A KR 20070029722A KR 100900469 B1 KR100900469 B1 KR 100900469B1
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power line
power
breaker
balance transformer
earth leakage
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KR1020070029722A
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Korean (ko)
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KR20080087461A (en
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김정수
최낙환
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김정수
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10Parallel operation of dc sources
    • H02J1/106Parallel operation of dc sources for load balancing, symmetrisation, or sharing
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/068Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Transformers (AREA)

Abstract

본 발명은 전력 라인에 설치되는 전기장치를 부하측에 연속적으로 전원을 공급하면서 교체하기 위한 무순단 교체장치이다.The present invention is a non-sequential replacement device for replacing the electric device installed in the power line while continuously supplying power to the load side.

본 발명의 주요 특징은 상기 전기장치를 기준으로 상기 전력라인의 입력측에 연결되는 복수의 접점을 스위칭 수단; 1차측이 상기 스위칭 수단에 연결되며, 2차측이 상기 전기장치를 기준으로 상기 전력라인의 출력측에 연결되는 밸런스 변압기를 포함하는 것이다. The main feature of the present invention is a switching means for switching a plurality of contacts connected to the input side of the power line based on the electrical device; The primary side is connected to the switching means, the secondary side comprises a balance transformer connected to the output side of the power line with respect to the electrical device.

무순단, 누전 차단기, 밸런스 변압기 Stepless, earth leakage breaker, balance transformer

Description

무순단 교체장치{uninterruptable changing machine for eletric device} Uninterruptable changing machine for eletric device

도 1은 종래의 무순단 교체장치의 회로도이다.1 is a circuit diagram of a conventional stepless replacement device.

도 2는 본 발명의 일실시예의 회로도이다.2 is a circuit diagram of one embodiment of the present invention.

본 발명은 전원 라인과 연결된 전기장치의 교체시에 부하측에 연속적으로 전원을 공급할 수 있도록 하는 무순단 교체장치에 관한 것이다.The present invention relates to a non-sequential replacement device capable of continuously supplying power to a load side when replacing an electric device connected to a power line.

건물의 전원 인입부로부터 건물내에 각종 부하들에 전원을 공급하기 위하여 전력라인이 설치되고, 전력라인에는 누전차단기, 서지 보호기등 각종 보호장치들이 설치된다. 이와 같은 보호장치들에 고장이 발생하게 되거나, 제한된 사용기간이 초과하게 되면 보호장치들을 교체해 주어야 한다.Power lines are installed to supply power to the various loads in the building from the power inlet of the building, and various protection devices such as an earth leakage breaker and a surge protector are installed in the power line. If these protection devices fail, or if their limited service life is exceeded, they must be replaced.

또한, 이러한 보호장치들을 교체할 때 전력라인에 연결된 부하들에 연속적인 전원 공급을 위하여 무순단 기술들이 사용되고 있다. 특히, 전원 라인에 직렬로 연결되어 있는 차단기의 교체시에는 차단기 후단의 전체 부하들에 전원 공급이 중단되기 때문에 이러한 무순단 기술이 더욱 요구되었다.In addition, when replacing these protection devices, no-step techniques are used to provide continuous power to the loads connected to the power lines. In particular, when the circuit breaker connected in series with the power line is replaced, this stepless technology is further required because the power supply to the entire loads behind the circuit breaker is interrupted.

도 1은 종래의 무순단 교체장치의 회로도이다.1 is a circuit diagram of a conventional stepless replacement device.

전원측으로부터 부하측에 전원을 공급하기 위한 전력라인(IN-OUT, IN'-OUT')에는 교체대상의 누전차단기(Earth Leakage Circuit Breaker: ELB)(1)가 설치되어 있으며, 누전차단기(1)를 무순단으로 교체하기 위하여 누전차단기(1)와 병렬로 NFB(No Fuse Breaker)(2)가 설치된다. NFB(2)의 쌍극 접점을 닫은 후 누전차단기(1)를 교체하고, NFB(2)의 쌍극 접점을 개방하면 부하에 연속적으로 전원을 공급할 수 있는 무순단교체를 이루게 된다.In the power lines (IN-OUT, IN'-OUT ') for supplying power from the power supply side to the load side, an earth leakage circuit breaker (ELB) (1) to be replaced is installed, and the earth leakage breaker (1) is provided. NFB (No Fuse Breaker) (2) is installed in parallel with the ground fault breaker (1) in order to replace it without a break. After closing the bipolar contacts of the NFB 2, replacing the earth leakage breaker 1, and opening the bipolar contacts of the NFB 2, an unsuccessful replacement is possible in which power can be continuously supplied to the load.

그러나, 교체를 위한 NFB(2)는 누전차단기(1)가 트립되는 것을 방지하기 위하여 쌍극 접점(a-a'), (b-b')을 갖는 것을 사용하고, 이러한 쌍극 접점(a-a'), (b-b')은 이상적으로 동시에 접촉되어 닫히게 되고, 개방시에 동시에 분리되도록 설계되어지나 실제로는 미세한 시간차를 갖고 접촉되게 된다. 이와 같이, NFB(2)의 접점 개폐시에 접점의 미세한 접촉 시간차에 의하여 누전차단기(1)가 트립되게 되어 무순단교체를 달성할 수 없는 경우가 빈번히 발생하게 된다.However, the NFB 2 for replacement uses those having bipolar contacts a-a 'and (b-b') to prevent the earth leakage breaker 1 from tripping, and such a bipolar contact a-a ') and (b-b') are ideally contacted and closed at the same time, and are designed to be separated at the same time in opening, but in reality they are contacted with a slight time difference. As described above, when the NFB 2 opens and closes the contact, the earth leakage breaker 1 is tripped due to the minute contact time difference between the contacts, and thus, the stepless replacement is frequently not achieved.

본 발명은 이러한 문제점을 해결하기 위한 것으로, 본 발명은 전력라인에 설치되는 전기장치를 무순단으로 교체하기 위한 것이다.The present invention is to solve such a problem, the present invention is to replace the electrical device installed in the power line without a change.

상기 목적들을 달성하기 위한 본 발명은 전력라인의 입력측과 부하측 사이에 연결된 차단기를 전원공급의 중단없이 교체하기 위한 무순단 교체장치에 있어서: 상기 입력측에 연결된 복수의 접점을 갖는 스위칭 수단; 1차측이 상기 스위칭 수단에 연결되며, 2차측이 상기 부하측에 연결되어 상기 복수의 접점이 시간차를 갖고 접촉되거나 개방될 때 불평형 상태를 제거하는 밸런스 변압기를 포함하는 것이다.SUMMARY OF THE INVENTION The present invention for achieving the above objects comprises a stepless replacement device for replacing a breaker connected between an input side and a load side of a power line without interruption of power supply, comprising: switching means having a plurality of contacts connected to the input side; The primary side is connected to the switching means, and the secondary side is connected to the load side to include a balance transformer which eliminates an unbalanced state when the plurality of contacts are contacted or opened with time difference.

삭제delete

또한, 본 발명에서 밸런스 변압기의 1차측과 2차측의 권선비는 1:1인 것이 바람직하다. In the present invention, it is preferable that the turns ratio of the primary side and the secondary side of the balance transformer is 1: 1.

이하, 첨부된 도면에 따라서 본 발명의 일실시예를 상세히 설명하기로 한다.Hereinafter, an embodiment of the present invention according to the accompanying drawings will be described in detail.

도 2는 본 발명의 일실시예의 회로도이다.2 is a circuit diagram of one embodiment of the present invention.

전력 라인(IN-OUT, IN'-OUT')에는 누전차단기(1)가 설치된다. 누전차단기(1)는 누전 트립형, 과전류 트립형 등 다양한 형태가 사용될 수 있다. 또한, 당업자에게는 누전차단기(1) 대신에 다양한 전기장치에 본 발명의 실시예가 응용될 수 있음은 당연한 것이다.An earth leakage breaker 1 is installed in the power lines IN-OUT and IN'-OUT '. The earth leakage breaker 1 may be used in various forms such as an earth leakage trip type and an over current trip type. In addition, it will be apparent to those skilled in the art that the embodiments of the present invention may be applied to various electric devices instead of the earth leakage breaker 1.

누전 차단기(1)를 무순단으로 교체하기 위해서, 누전 차단기(1)와 병렬로 NFB(2)와 밸런스 변압기(T)로 이루어진 무순단 교체장치(3)가 설치된다.In order to replace the earth leakage breaker 1 in an indispensable manner, an uninterruptible replacement device 3 composed of an NFB 2 and a balance transformer T is installed in parallel with the earth leakage breaker 1.

NFB(2)는 a-a', b-b'의 쌍극 접점을 갖는 것으로 쌍극 접점은 이상적으로 동시에 개방되고, 닫히게 된다. NFB(2)의 입력측 접점 a, b는 누전 차단기(1)를 기준으로 전원측의 전력라인에 각각 연결되고, 출력측 접점 a', b'는 밸런스 변압기(T)의 1차측 권선단에 각각 연결되고, 밸런스 변압기(T)의 2 차측의 권선단은 누전 차단기(1)를 기준으로 부하측의 전력라인에 각각 연결된다.The NFB 2 has a-a 'and b-b' bipolar contacts, which ideally open and close at the same time. The input contacts a and b of the NFB 2 are connected to the power lines on the power supply side based on the ground fault breaker 1, and the output contacts a 'and b' are respectively connected to the primary winding ends of the balance transformer T. The winding end of the secondary side of the balance transformer T is connected to the power line of the load side based on the ground fault breaker 1, respectively.

밸런스 변압기(T)는 1차측에 연결되는 NFB(2)의 쌍극 접점이 시간차를 갖고 접촉되거나 개방되는 경우에 발생되는 불평형상태를 제거하여, 2차측에는 평형상태를 이루도록 하는 1:1 변압기이다.The balance transformer T is a 1: 1 transformer that removes an unbalance generated when a dipole contact of the NFB 2 connected to the primary side is contacted or opened with a time difference, thereby achieving an equilibrium state on the secondary side.

누전 차단기(1)를 교체하기 위하여 무순단 교체장치(3)를 누전 차단기(1)와 병렬로 설치하고, 무순단 교체장치(3) 내의 NFB(2)의 접점을 닫은 후에 누전 차단기(1)를 교체시킨다. 이 교체 작업중에도 무순단 교체장치(3)를 통하여 전원이 부하측에 공급되게 되므로 무순단 목적을 달성할 수 있다. 교체 작업 종료 후에 NFB(2)의 접점을 개방시킨 후에 무순단 교체장치(3)를 전력 라인으로부터 분리시켜 전체 작업을 종료한다.In order to replace the circuit breaker (1), an uninterruptible replacement device (3) is installed in parallel with the circuit breaker (1), and after closing the contact point of the NFB (2) in the circuitless replacement device (3), the circuit breaker (1) Replace. Even during this replacement operation, since the power is supplied to the load side through the non-sequential replacement device 3, the non-obvious purpose can be achieved. After the replacement work is completed, the contact of the NFB 2 is opened, and then the non-sequential replacement device 3 is disconnected from the power line to complete the whole work.

무순단 교체장치(3)의 NFB(2)를 닫거나, 개방시킬 때 쌍극접점의 접촉, 분리시에 미세 시간차로 인한 불평형 상태는 밸런스 변압기(T)에 의하여 교정되어 평형상태를 이루게 되므로 누전 차단기(1)가 임의적으로 트립되는 것이 방지되어 무순단 전원 공급의 목적을 달성할 수 있다.When the NFB (2) of the stepless replacement device (3) is closed or opened, an unbalanced state due to minute time difference at the time of contact or disconnection of the bipolar contact is corrected by the balance transformer (T) to achieve an equilibrium state. 1) can be prevented from tripping arbitrarily to achieve the purpose of an uninterrupted power supply.

상기의 목적과 구성을 갖는 본 발명에 따르면, 전력 라인에 설치되는 전기장치 교체시에, 전기장치와 병렬로 연결되는 무순단 교체장치에서, 불평형 상태를 밸런스 변압기에 의하여 평형상태로 교정함으로써 교체시에 부하측에 불평형 상태의 전원이 공급되는 것을 방지할 수 있다.According to the present invention having the above object and configuration, when replacing the electric device installed in the power line, in the non-sequential replacement device connected in parallel with the electric device, when replacing the unbalance state by correcting the equilibrium state by the balance transformer The supply of unbalanced power to the load side can be prevented.

특히, 전기장치가 누전 차단기를 포함한 차단기인 경우에 무순단 교체장치의 NFB의 투입 또는 차단시에 발생되는 쌍극 접점의 시간차이에서 발생되는 불평형 상태는 차단기의 트립을 유발하지만 NFB에 연결된 밸런스 변압기에 의하여 평형 상태를 회복하게 되므로 차단기가 트립되는 것을 방지하도록 하여 전원이 연속적으로 공급되도록 한다. In particular, when the electrical device is a circuit breaker including an earth leakage circuit breaker, an unbalance caused by the time difference of the bipolar contact point generated when the NFB is inserted or interrupted by an unsuccessful replacement device causes a trip of the circuit breaker, but the balance transformer connected to the NFB As the equilibrium state is restored, the breaker is prevented from tripping so that power is continuously supplied.

Claims (3)

전력라인의 입력측과 부하측 사이에 연결된 차단기를 전원공급의 중단없이 교체하기 위한 무순단 교체장치에 있어서:In an indispensable replacement device for replacing a breaker connected between the input side and the load side of a power line without interruption of power supply: 상기 입력측에 연결된 복수의 접점을 갖는 스위칭 수단;Switching means having a plurality of contacts connected to the input side; 1차측이 상기 스위칭 수단에 연결되며, 2차측이 상기 부하측에 연결되어 상기 복수의 접점이 시간차를 갖고 접촉되거나 개방될 때 불평형 상태를 제거하는 밸런스 변압기를 포함하는 것을 특징으로 하는 무순단 교체장치.And a balance transformer having a primary side connected to the switching means and a secondary side connected to the load side to remove an unbalance when the plurality of contacts are contacted or opened with time difference. 삭제delete 제 1 항에 있어서, 상기 밸런스 변압기의 1차측과 2차측의 권선비는 1:1인 것을 특징으로 하는 무순단 교체장치.The apparatus of claim 1, wherein a turns ratio of the primary side and the secondary side of the balance transformer is 1: 1.
KR1020070029722A 2007-03-27 2007-03-27 Uninterruptable changing machine for eletric device KR100900469B1 (en)

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KR20040081414A (en) * 2004-09-02 2004-09-21 (주)에이엔피테크놀러지 Protection Switch, Emergency Switch and Transformer Tab Transfering Section of Automatic Voltage Regulator

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JPH07154450A (en) * 1993-12-01 1995-06-16 Nec Corp Transmission line interface switching device
KR20040042529A (en) * 2002-11-14 2004-05-20 주식회사 포스코 Emergency line switching circuit of uninterruptible power supply
KR20040081414A (en) * 2004-09-02 2004-09-21 (주)에이엔피테크놀러지 Protection Switch, Emergency Switch and Transformer Tab Transfering Section of Automatic Voltage Regulator

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