KR20110038996A - Monitoring apparatus for power device box using power line modem - Google Patents

Monitoring apparatus for power device box using power line modem Download PDF

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KR20110038996A
KR20110038996A KR1020090096242A KR20090096242A KR20110038996A KR 20110038996 A KR20110038996 A KR 20110038996A KR 1020090096242 A KR1020090096242 A KR 1020090096242A KR 20090096242 A KR20090096242 A KR 20090096242A KR 20110038996 A KR20110038996 A KR 20110038996A
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South Korea
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power
power line
monitoring
line
panel
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KR1020090096242A
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Korean (ko)
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KR101089578B1 (en
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한정이
서승우
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대승전기공업(주)
서승우
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/46—Boxes; Parts thereof or accessories therefor
    • H02B1/48—Mounting of devices therein
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

Abstract

PURPOSE: A monitoring apparatus for a power device box using a power line modem is provided to simplify a monitoring wire by transmitting monitoring parameters through power line. CONSTITUTION: In a monitoring apparatus for a power device box using a power line modem, a transmission module(30) is installed in inner panel(10). A transmission module comprises a current detection unit(32) and a voltage detection unit(34) The transmission module comprises a first micro-control unit(36) and a power line modem transmitter(38) The current detection unit detects current flowing in the power line. The voltage detection unit detects the electric potential difference between a center line and phase lines. . The first micro control unit generates monitoring parameters. The power line model transmitter modulates the monitoring parameters. A receive module(40) comprises a power line model receiver(42) and a second micro control unit(44) The power line modem receiver demodulates the monitoring parameters.

Description

전력선모뎀을 이용한 전력기기함 감시장치{Monitoring apparatus for power device box using power line modem}Monitoring apparatus for power device box using power line modem}

본 발명은 전력선모뎀을 이용한 전력기기함 감시장치에 관한 것으로서, 보다 상세하게는 전력선모뎀을 이용하여 전력기기함 내부의 배선을 간소화하고, 감시라인의 유지보수가 간편하게 이루어지는 전력선모뎀을 이용한 전력기기함 감시장치에 관한 것이다. The present invention relates to a power equipment box monitoring apparatus using a power line modem, and more particularly, a power equipment box using a power line modem that simplifies the wiring inside the power equipment box and easily maintains the monitoring line using the power line modem. It relates to a monitoring device.

일반적으로, 분전반은 공장이나 빌딩 등에서 배전전원을 수용하여 수용가측에 공급하거나 차단하는 장치이다. 분전반 내에는 전력선을 개폐하는 배선차단기, 퓨즈, 마그네틱 스위치 등의 전력설비들이 설치된다. 통상적으로 과부하 발생, 단락, 송전측의 전압 불평형, 역률 저하, 고조파 성분에 의한 무효전력 증가 등으로부터 수용가측 전기기기 및 전력설비를 보호하기 위하여, 분전반은 상시 감시되어야 한다. 이를 위하여 분전반을 구성하는 큐비클의 도어판넬 전면에는 전압계, 전류계, 전력량계, 주파수계, 역률계, 과전압 경보기, 과전류 경보기, 지락과전류 경 보기 등과 같은 각종 표시기들이 설치된다.In general, the distribution panel is a device for receiving or distributing distribution power to a customer side in a factory or building. In the distribution panel, power equipment such as a circuit breaker, a fuse, and a magnetic switch to open and close the power line are installed. In general, distribution boards should be monitored at all times to protect consumer-side electrical equipment and power equipment from overloads, short circuits, voltage unbalance on the transmission side, reduced power factor and increased reactive power due to harmonic components. To this end, various indicators such as a voltmeter, an ammeter, an electricity meter, a frequency meter, a power factor meter, an overvoltage alarm, an overcurrent alarm, and a ground overcurrent alarm are installed on the front of the door panel of the cubicle constituting the distribution panel.

이와 같이 큐비클 내부에 전력선 및 전력설비가 설치되고, 큐비클의 전면에 설치된 표시기로 큐비클 내부의 전력선 및 전력설비 상황을 표시하는 장치는 분전반 이외에도 수배전반, 전기기기들의 컨트롤박스 등 다양한 종류의 전력기기함에서도 동일하게 적용된다.In this way, the power line and power equipment is installed inside the cubicle, and the device that displays the power line and power equipment status inside the cubicle with an indicator installed on the front of the cubicle is used in various types of power equipment boxes such as switchboards and control boxes of electrical equipment. The same applies.

그런데, 위와 같이 도어판넬의 전면에 다수의 표시기들이 장착됨으로 인해, 큐비클의 내부판넬과 도어판넬 사이에는 무수히 많은 통신라인들이 설치된다. 각각의 통신라인들은 내부판넬과 도어판넬 사이에 설치된 덕트를 통해 배선되는데, 도어판넬을 자주 개폐하는 과정에서 일부 통신라인들이 문틈에 끼어 단선되는 경우가 종종 발생한다. 또한, 통신라인들이 복잡하게 얽혀 있어, 통신라인들의 정확한 식별이 곤란하며, 이는 감시라인의 유지보수를 곤란하게 할 뿐만 아니라 전력기기함 내에 설치된 전력설비 등의 유지보수 역시 곤란하게 한다.However, since a plurality of indicators are mounted on the front of the door panel as described above, numerous communication lines are installed between the inner panel of the cubicle and the door panel. Each communication line is wired through a duct installed between the inner panel and the door panel. In the process of frequently opening and closing the door panel, some communication lines are often interrupted by the door gap. In addition, the communication lines are intricately intertwined, so that accurate identification of the communication lines is difficult, which not only makes maintenance of the monitoring line difficult, but also makes maintenance of power equipment installed in the power equipment box and the like difficult.

본 발명은 상기와 같은 문제점을 해결하기 위하여 제안된 것으로서, 전력기기함의 도어판넬 전면에 장착된 표시기를 통해 전력기기함 내부의 전력설비 및 전력선을 감시하는 전력기기함 감시장치에 있어서, 내부판넬과 도어판넬에 각각 전력선모뎀을 설치하고, 전력선을 통해 계기용 전압 및 계기용 전류를 포함한 감시 파라미터를 전송함으로써, 전력기기함 내부의 감시라인 배선이 간소화되고 깔끔하게 정돈되며, 감시라인 및 전력기기함 내부의 전력설비 유지보수를 간편하게 하는 새로운 구조의 전력선모뎀을 이용한 전력기기함 감시장치를 제공함에 그 목적이 있다.The present invention has been proposed to solve the above problems, in the power box monitoring device for monitoring the power equipment and power lines inside the power box through the indicator mounted on the front of the door panel of the power box, the inner panel and By installing power line modems on the door panels and transmitting monitoring parameters including instrument voltage and instrument current through the power line, wiring of the monitoring line inside the power equipment box is simplified and neatly arranged. The purpose of the present invention is to provide a power box monitoring device using a power line modem of a new structure that simplifies maintenance of power equipment.

상기와 같은 목적을 달성하기 위한 본 발명의 전력선모뎀을 이용한 전력기기함 감시장치는, 전력기기함에 설치되어 전력기기함 내부판넬(10)의 전력설비 및 전력선(12) 상황을 전력기기함 도어판넬(20)의 전면에 설치된 표시기(22)로 표시하는 전력기기함 감시장치에 있어서, 상기 내부판넬(10)에 설치되며, 전력선(12)의 상선(R, S, T)과 중성선(N) 사이에 연결되어 전력선(12)에 흐르는 전류를 검출하는 전류검출수단(32) 및 상선(R, S, T)과 중성선(N)의 전위차를 검출하는 전압검출수단(34)과, 상기 전류검출수단(32) 및 전압검출수단(34)의 검출값으로부터 계기용 전압, 계기용 전류를 포함한 감시 파라미터를 생성하는 제1마이크로컨트롤유닛(36) 과, 상기 제1마이크로컨트롤유닛(36)에서 생성된 감시 파라미터를 변조하여 전력선(12)을 통해 송신하는 전력선모뎀 송신기(38)를 포함하는 송신모듈(30); 및 상기 도어판넬(20)에 설치되며, 전력선(12)을 통해 상기 전력선모뎀 송신기(38)에서 전송되는 감시 파라미터를 수신하여 복조하는 전력선모뎀 수신기(42)와, 수신된 감시 파라미터를 상기 표시기(22)로 출력하고 표시기(22)의 구동을 제어하는 제2마이크로컨트롤유닛(44)을 포함하는 수신모듈(40);을 포함하여 구성된 것을 특징으로 한다.Power equipment box monitoring device using the power line modem of the present invention for achieving the above object, the power equipment box power panel and the power line 12 situation of the power equipment box inner panel 10 installed in the power equipment box door panel In the power equipment box monitoring device displayed by the indicator 22 installed on the front of the (20), installed on the inner panel 10, the merchant line (R, S, T) and the neutral line (N) of the power line 12 A current detection means 32 connected between the current detection means 32 for detecting a current flowing through the power line 12 and a voltage detection means 34 for detecting a potential difference between the phase lines R, S, and T, and the neutral line N, and the current detection means. Generated by the first microcontrol unit 36 and the first microcontrol unit 36 for generating monitoring parameters including the instrument voltage and the instrument current from the detected values of the means 32 and the voltage detection means 34. Power line modem transmission, which modulates the transmitted monitoring parameters and transmits them through the power line 12 Transmission module 30 comprising a group 38; And a power line modem receiver 42 which is installed in the door panel 20 and receives and demodulates a monitoring parameter transmitted from the power line modem transmitter 38 through a power line 12. And a receiving module 40 which includes a second micro control unit 44 for outputting to the 22 and controlling the driving of the indicator 22.

바람직한 실시예에 따르면, 상기 표시기(22)는 전압계(22a), 전류계(22b), 전력량계(22c), 주파수계(22d), 역률계(22e), 과전압 또는 과전류 경보기(22f) 중 적어도 하나 이상을 포함한다.According to a preferred embodiment, the indicator 22 is at least one of voltmeter 22a, ammeter 22b, wattmeter 22c, frequency meter 22d, power factor meter 22e, overvoltage or overcurrent alarm 22f. It includes.

본 발명의 전력선모뎀을 이용한 전력기기함 감시장치에 따르면, 전력기기함 내부의 감시라인 배선이 크게 간소화되고, 배선들이 깔끔하고 일목요연하게 정돈되며, 전력설비 감시라인의 유지보수가 간편해짐은 물론 전력기기함의 다른 설비들의 유지보수 역시 간편해지는 효과가 있다.According to the power equipment box monitoring apparatus using the power line modem of the present invention, the wiring of the monitoring line inside the power equipment box is greatly simplified, the wiring is neat and tidy, and the maintenance of the power equipment monitoring line is simplified, as well as the power equipment Maintenance of other installations of the vessel also has the effect of being simplified.

이하, 본 발명의 바람직한 실시예를 첨부된 도면 및 실시예를 참조하여 상세 히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and embodiments.

도 1은 본 발명에 따른 전력기기함 감시장치를 개략적으로 묘사한 블록도이고, 도 2 및 3은 본 발명에서 송신모듈의 구성예를 보인 블록도이다.1 is a block diagram schematically illustrating an apparatus for monitoring a power equipment box according to the present invention, and FIGS. 2 and 3 are block diagrams showing a configuration example of a transmission module in the present invention.

먼저, 도 1을 참조하면, 본 발명의 전력기기함 감시장치는 전력기기함에 자체적으로 설치되어 전력기기함 도어판넬 전면의 표시기를 통해 전력선 및 전력설비의 전압, 전류, 전력량, 주파수, 역률, 각종 경보 등을 표시하도록 구성된다. 이하에서 설명되는 실시예는 전력기기함의 예로서 "분전반"을 예시하여 설명하겠으나, 본 발명의 기술사상은 분전반에 한정되어 적용되는 것이 아니라 수배전반이나 기타 전기기기들의 컨트롤박스 등과 같이 다양한 종류의 전력기기함에 적용 가능하다는 것이 당해 기술분야에서 통상의 지식을 가진 자에게 자명할 것이다.First, referring to FIG. 1, the power equipment box monitoring apparatus of the present invention is installed in the power equipment box itself, and the voltage, current, power amount, frequency, power factor, and various kinds of power lines and power equipments are displayed on the front panel of the power equipment box door panel. Configured to display alarms and the like. An embodiment described below will be described by way of example as a power distribution box, "distribution panel", but the technical concept of the present invention is not limited to the distribution panel, but various types of power equipment such as control boxes of switchboards and other electrical equipment It will be apparent to those of ordinary skill in the art that the present invention is applicable to the art.

도시한 바와 같이, 분전반의 내부판넬(10)에는 통상의 분전반에서와 같이 3상4선식 전력선(12)이 배치된다. 분전반으로 인입되는 각 상선(R, S, T)과 중성선(N)에는 각각 메인 배선차단기(14)가 설치된다. 그리고, 메인 배선차단기(14) 후단의 각 상선(R, S, T)에서 분기된 분기선에는 보조 배선차단기(16)가 설치된다. 보조 배선차단기(16)의 후단에서는, 어느 하나의 상선(R, S, T)과 중성선(N)에 접속된 전력라인이 부하측으로 전달된다.As shown in the drawing, the three-phase four-wire power line 12 is disposed in the inner panel 10 of the distribution panel as in a conventional distribution panel. The main wiring breaker 14 is provided in each of the merchant wires R, S, T and the neutral conductor N, which are led to the distribution panel. An auxiliary wiring breaker 16 is provided at branch lines branched from each of the upper lines R, S, and T behind the main wiring breaker 14. At the rear end of the auxiliary wiring breaker 16, the power lines connected to any one of the upper wires R, S and T and the neutral wire N are transferred to the load side.

위와 같은 분전반의 구성에 더하여, 본 발명의 분전반 감시장치는 내부판넬(10)에 전력선모뎀 송신기(38)를 포함하는 송신모듈(30)이 더 설치된다. 송신모듈(38)은 도 1에 도시된 바와 같이, 부하측으로 전달되는 분기라인 상에서 어느 하나의 상선(R, S, T)과 중성선(N) 사이에 설치된다.In addition to the configuration of the distribution panel as described above, the distribution panel monitoring device of the present invention is further provided with a transmission module 30 including a power line modem transmitter 38 in the inner panel (10). As shown in FIG. 1, the transmission module 38 is installed between any one of the merchant wires R, S, and T and the neutral wire N on the branch line transmitted to the load side.

도 2 및 3은 본 발명에서의 송신모듈 구성을 잘 보여준다. 도 2 및 3을 참조하면, 송신모듈(30)은 전류검출수단(32)과, 전압검출수단(34)과, 제1마이크로컨트롤유닛(36)과, 전력선모뎀 송신기(38)로 구성된다.2 and 3 show the configuration of the transmission module in the present invention. 2 and 3, the transmission module 30 includes a current detecting means 32, a voltage detecting means 34, a first micro control unit 36, and a power line modem transmitter 38.

상기 전류검출수단(32)은 각 상선(R, S, T)에 흐르는 전류를 검출하여 계기용 전류로 변성하는 수단이다. 일 예로서, 전류검출수단(32)은 도 2에 도시된 바와 같이, CT(Current Transformer) 타입으로 구성될 수 있다. CT 타입의 전류검출수단(32)은 도시된 바와 같이 각 상선(R, S, T)에 링 코어를 삽입하고 자장의 양에 의한 전압을 출력하여 전류를 검출하는 수단이다. 다른 예로서, 전류검출수단(34)은 도 3에 도시된 바와 같이, Shunt 타입으로 구성될 수도 있다. Shunt 타입의 전류검출수단(34)은 각 상선(R, S, T)에 저항을 설치하고 저항에 의한 전압강하를 검출하여 전류를 검출하는 수단이다. 물론, 전류검출수단(32)은 언급된 두가지 방식 이외의 다른 방식으로 대체될 수 있다.The current detecting means 32 is a means for detecting a current flowing in each of the phase lines R, S, and T and converting it into a meter current. As an example, the current detecting unit 32 may be configured as a CT (Current Transformer) type, as shown in FIG. CT type current detecting means 32 is a means for detecting a current by inserting a ring core into each of the merchant lines (R, S, T) and outputting a voltage by the amount of magnetic field. As another example, the current detecting means 34 may be configured as a shunt type, as shown in FIG. The current detection means 34 of the shunt type is a means for detecting a current by providing a resistor in each of the phase lines R, S, and T, and detecting a voltage drop caused by the resistance. Of course, the current detecting means 32 can be replaced in other ways than the two mentioned ways.

상기 전압검출수단(34)은 상선(R, S, T)과 중성선(N) 사이에서의 전위차를 검출하여 계기용 전압으로 변성하는 수단이다. 예를 들어, 전압검출수단(34)은 PT(Potential Transformer)로 구성된다. PT는 변압기의 권선비를 이용하여 고압의 전압을 계기용 전압으로 변성한다.The voltage detecting means 34 is a means for detecting a potential difference between the phase lines R, S, and T and the neutral line N, and converting the voltage into an instrument voltage. For example, the voltage detecting means 34 is composed of PT (Potential Transformer). PT converts the high voltage into instrument voltage using the turns ratio of transformer.

상기 제1마이크로컨트롤유닛(36)은 전류검출수단(32)과 전압검출수단(34)의 검출값으로부터 계기용 전압, 계기용 전류를 포함한 감시 파라미터를 생성한다. 바람직하게는, 감시 파라미터는 전압, 전류, 주파수, 전력, 전력량, 역률 등을 포함한다. 또한, 감시 파라미터는 전력설비의 전압기 설정치 이상으로 상승하는지 여부 에 따라 과전압 경보신호를 발생시킨다. 또한, 이와 유사한 방식으로, 과전류 경보신호, 지락과전류 경보신호 등을 발생시킨다.The first micro control unit 36 generates a monitoring parameter including the instrument voltage and the instrument current from the detection values of the current detection unit 32 and the voltage detection unit 34. Preferably, the monitoring parameters include voltage, current, frequency, power, amount of power, power factor, and the like. In addition, the monitoring parameter generates an overvoltage alarm signal depending on whether or not it rises above the voltage setting of the power plant. In a similar manner, an overcurrent alarm signal, a ground overcurrent alarm signal, and the like are generated.

상기 전력선모뎀 송신기(38)는 제1마이크로컨트롤유닛(36)에서 생성된 감시 파라미터를 변조하여 전력선(12)을 통해 송신한다. 이를 위하여 전력선모뎀 송신기(38)는 각 상선(R, S, T)과 중성선(N) 사이에 연결된다. 또한, 전력선모뎀 송신기(38)는 상선(R, S, T)과 중성선(N) 사이에서 전력을 공급받고 이를 정류하여 송신모듈(30)의 각 구성품에 공급한다.The power line modem transmitter 38 modulates the monitoring parameter generated by the first micro control unit 36 and transmits it through the power line 12. To this end, the power line modem transmitter 38 is connected between each phase line (R, S, T) and the neutral (N). In addition, the power line modem transmitter 38 receives power between the commercial lines (R, S, T) and the neutral line (N), rectifies it and supplies it to each component of the transmission module (30).

다시 도 1을 참조하면, 분전반의 도어판넬(20)에는 송신 모듈(30)에서 전력선(12)을 통해 송신한 데이터를 수신하는 수신모듈(40)과 이 수신모듈(40)에 연결되어 수신모듈(40)로부터 전달되는 감시 파라미터를 표시하는 각종 표시기(22)가 설치된다.Referring back to FIG. 1, the door panel 20 of the distribution panel has a receiving module 40 for receiving data transmitted from the transmitting module 30 through the power line 12 and connected to the receiving module 40. Various indicators 22 are provided which display the monitoring parameters transmitted from 40.

도시한 바와 같이, 도어판넬(20)에는 각 상선(R, S, T)과 중성선(N)이 연결된다. 그리고, 통상 그러하듯이 도어판넬(20)에 연결되는 전력선은 도어판넬에 설치된 각종 장비의 전원으로 이용된다. 이때, 본 발명의 분전반 감시장치에서는 위와 같이 도어판넬(20)로 연결되는 전력선(12)을 이용하여 감시 파라미터를 전송한다.As shown, each of the merchant ships (R, S, T) and the neutral wire (N) is connected to the door panel (20). And, as usual, the power line connected to the door panel 20 is used as a power source for various equipment installed in the door panel. In this case, the distribution panel monitoring apparatus of the present invention transmits the monitoring parameter by using the power line 12 connected to the door panel 20 as described above.

도시한 바와 같이, 상기 수신모듈(40)은 전력선모뎀 수신기(42)와, 제2마이크로컨트롤유닛(44)으로 구성된다.As shown, the receiving module 40 includes a power line modem receiver 42 and a second micro control unit 44.

상기 전력선모뎀 수신기(42)는 전력선(12)의 각 상선(R, S, T)과 중성선(N) 사이에 접속되어, 전력선(12)을 통해 전송되는 감시 파라미터를 수신하고, 수신된 감시 파라미터를 원래의 데이터로 복조한다. 통상 알려진 바와 같이, 전력선모뎀 수신기(42)는 전력선모뎀 송신기(38)와 쌍을 이루도록 구성된다.The power line modem receiver 42 is connected between each of the phase lines R, S, and T of the power line 12 and the neutral line N to receive the monitoring parameters transmitted through the power line 12, and receive the received monitoring parameters. Demodulate to the original data. As is commonly known, the power line modem receiver 42 is configured to pair with the power line modem transmitter 38.

상기 제2마이크로컨트롤유닛(44)은 수신된 감시 파라미터를 각각의 표시기(22)로 출력하여 표시기(22)의 표시를 제어한다. 도 1에 도시된 예에서, 표시기(22)는 전압을 표시하는 전압계(22a), 전류를 표시하는 전류계(22b), 전력량을 표시하는 전력량계(22c), 주파수를 표시하는 주파수계(22d), 역률을 표시하는 역률계(22e), 각종 경보기(22f)로 구성된다. 경보기(22f)는 예를 들어, 과전압 경보기, 과전류 경보기, 지락과전류 경보기 등으로 구성된다.The second microcontrol unit 44 outputs the received monitoring parameter to each indicator 22 to control the display of the indicator 22. In the example shown in FIG. 1, the indicator 22 includes a voltmeter 22a for displaying a voltage, an ammeter 22b for displaying a current, an electricity meter 22c for displaying a power amount, a frequency meter 22d for displaying a frequency, It is comprised from the power factor meter 22e which displays a power factor, and various alarms 22f. The alarm 22f is configured with, for example, an overvoltage alarm, an overcurrent alarm, a ground overcurrent alarm, or the like.

위와 같이 구성된 분전반 감시장치의 작용에 대하여 설명하면 다음과 같다.Referring to the operation of the distribution panel monitoring device configured as described above are as follows.

우선, 분전반 내부판넬(10)의 송신모듈(30)은 각 상선(R, S, T)에 흐르는 전류와 각 상선(R, S, T)과 중성선 사이의 전압을 검출하고, 이를 계기용 전류 및 전압으로 변성하며, 변성된 계기용 전류 및 전압을 이용하여 감시 파라미터를 생성한다. 그리고, 송신모듈(30)의 전력선모뎀 송신기(38)는 감시 파라미터를 변조하여 전력선(12)을 통해 송신한다.First, the transmission module 30 of the distribution panel inner panel 10 detects a current flowing in each phase line (R, S, T) and a voltage between each phase line (R, S, T) and a neutral wire, and this is the instrument current. And voltage, and generate the monitoring parameters using the modified instrument current and voltage. Then, the power line modem transmitter 38 of the transmission module 30 modulates the monitoring parameter and transmits it via the power line 12.

분전반 도어판넬(20)의 수신모듈(40)은 감시 파라미터를 수신하여 복조하고, 이를 다시 각종 표시기(22)에서 표시하기 적합한 신호로 변환하여 표시기(22)로 전달한다. 따라서, 각종 표시기(22)를 통해 다양한 감시 파라미터들이 표시된다.The receiving module 40 of the distribution panel door panel 20 receives and demodulates a monitoring parameter, converts it into a signal suitable for display on various indicators 22, and transmits it to the indicators 22. Thus, various monitoring parameters are displayed via various indicators 22.

만약, R 상의 상선에서 과전류가 발생하였다면, R 상의 상선에 연결된 전류검출수단(32)에서 이를 검출하고, R 상과 중성선 사이에 설치된 송신모듈은 과전류 발생에 대응하는 신호를 전력선(12)을 통해 송신한다. 그러면, 도어판넬(20)측의 수신모듈은 수신된 신호를 복조하여 과전류 경보기를 점등시킨다.If an overcurrent occurs in the phase line of R phase, the current detecting means 32 connected to the phase line of R phase detects it, and the transmission module installed between the R phase and the neutral line transmits a signal corresponding to the overcurrent generation through the power line 12. Send. Then, the receiving module on the door panel 20 demodulates the received signal to turn on the overcurrent alarm.

이와 같은 본 발명은 분전반의 내부판넬(10)과 도어판넬(20)이 매우 근접 배치됨에도 불구하고, 종래에 주로 원격 통신용으로만 이용되던 전력선 모뎀을 이용하여 내부판넬(10)과 도어판넬(20) 사이를 연결하는 많은 가닥의 감시라인을 없앨 수 있다. 따라서, 분전반의 내부판넬(10)과 도어판넬(20) 사이에는 전력선(12)만 연결하면 되므로, 분전반 내부의 배선이 크게 간소화되며, 깔끔하게 정돈될 수 있다. 또한, 분전반 내부의 배선이 간소화됨으로써 전력설비의 유지보수 및 감시라인의 유지보수가 매우 수월해지는 기술적 장점을 갖는다.In the present invention as described above, although the inner panel 10 and the door panel 20 of the distribution panel are very close to each other, the inner panel 10 and the door panel 20 using a power line modem, which is conventionally mainly used only for remote communication. Can eliminate many lines of monitoring line Therefore, since only the power line 12 needs to be connected between the inner panel 10 and the door panel 20 of the distribution panel, the wiring inside the distribution panel is greatly simplified and can be neatly arranged. In addition, by simplifying the wiring inside the distribution panel has a technical advantage that the maintenance of the power equipment and the maintenance of the monitoring line is very easy.

이상 설명한 본 발명은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능하다는 것이, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어 명백할 것이다.The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the technical field of the present invention without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

도 1은 본 발명에 따른 전력기기함 감시장치를 개략적으로 묘사한 블록도1 is a block diagram schematically illustrating a power equipment box monitoring apparatus according to the present invention

도 2는 본 발명에서 송신모듈의 일 구성예를 보인 블록도Figure 2 is a block diagram showing an example of the configuration of a transmission module in the present invention

도 3은 본 발명에서 송신모듈의 다른 구성예를 보인 블록도3 is a block diagram showing another configuration example of a transmission module in the present invention;

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : 내부판넬 12 : 전력선10: inner panel 12: power line

14 : 메인 배선차단기 16 : 보조 배선차단기14: main circuit breaker 16: auxiliary wiring breaker

20 : 도어판넬 22 : 표시기20: door panel 22: indicator

30 : 송신모듈 32 : 전류검출수단30: transmitting module 32: current detecting means

34 : 전압검출수단 36 : 제1마이크로컨트롤유닛34: voltage detecting means 36: first micro control unit

38 : 전력선모뎀 송신기 40 : 수신모듈38: power line modem transmitter 40: receiving module

42 : 전력선모뎀 수신기 44 : 제2마이크로컨트롤유닛42: power line modem receiver 44: second micro control unit

Claims (2)

전력기기함에 설치되어 전력기기함 내부판넬(10)의 전력설비 및 전력선(12) 상황을 전력기기함 도어판넬(20)의 전면에 설치된 표시기(22)로 표시하는 전력기기함 감시장치에 있어서,In the power equipment box monitoring device installed in the power box to display the power equipment and power line 12 of the power panel inside the panel 10, the indicator 22 installed on the front of the power box door panel 20, 상기 내부판넬(10)에 설치되며, 전력선(12)의 상선(R, S, T)과 중성선(N) 사이에 연결되어 전력선(12)에 흐르는 전류를 검출하는 전류검출수단(32) 및 상선(R, S, T)과 중성선(N)의 전위차를 검출하는 전압검출수단(34)과, 상기 전류검출수단(32) 및 전압검출수단(34)의 검출값 으로부터 계기용 전압, 계기용 전류를 포함한 감시 파라미터를 생성하는 제1마이크로컨트롤유닛(36)과, 상기 제1마이크로컨트롤유닛(36)에서 생성된 감시 파라미터를 변조하여 전력선(12)을 통해 송신하는 전력선모뎀 송신기(38)를 포함하는 송신모듈(30); 및The current detecting means 32 and the merchant line installed in the inner panel 10 and connected between the merchant lines R, S and T and the neutral line N of the power line 12 to detect a current flowing through the power line 12. Instrument voltage and instrument current from the voltage detection means 34 for detecting the potential difference between (R, S, T) and the neutral line N, and the detected values of the current detection means 32 and the voltage detection means 34. A first micro control unit 36 for generating a monitoring parameter including a; and a power line modem transmitter 38 for modulating and transmitting the monitoring parameters generated in the first micro control unit 36 through the power line 12. A transmission module 30; And 상기 도어판넬(20)에 설치되며, 전력선(12)을 통해 상기 전력선 모뎀 송신기(38)에서 전송되는 감시 파라미터를 수신하여 복조하는 전력선모뎀 수신기(42)와, 수신된 감시 파라미터를 상기 표시기(22)로 출력하고 표시기(22)의 구동을 제어하는 제2마이크로컨트롤유닛(44)을 포함하는 수신모듈(40);을 포함하여 구성된 것을 특징으로 하는 전력선모뎀을 이용한 전력기기함 감시장치.A power line modem receiver 42 which is installed in the door panel 20 and receives and demodulates a monitoring parameter transmitted from the power line modem transmitter 38 through a power line 12, and displays the received monitoring parameter in the display unit 22. And a receiving module (40) including a second micro control unit (44) for outputting and controlling the driving of the indicator (22). 제 1항에 있어서,The method of claim 1, 상기 표시기(22)는 전압계(22a), 전류계(22b), 전력량계(22c), 주파수계(22d), 역률계(22e), 과전압 또는 과전류 경보기(22f) 중 적어도 하나 이상을 포함하는 것을 특징으로 하는 전력선모뎀을 이용한 전력기기함 감시장치.The indicator 22 is characterized in that it comprises at least one of voltmeter 22a, ammeter 22b, wattmeter 22c, frequency meter 22d, power factor meter 22e, overvoltage or overcurrent alarm 22f. Power equipment box monitoring device using a power line modem.
KR1020090096242A 2009-10-09 2009-10-09 Monitoring apparatus for power device box using power line modem KR101089578B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101305484B1 (en) * 2012-03-29 2013-09-06 (주) 솔루윈스 Apparatus for sensing a power state using one pole type sensor in industrial distribution board
CN108181496A (en) * 2018-01-11 2018-06-19 国网山东省电力公司夏津县供电公司 Electric power circuit insulator safety device
CN113555798A (en) * 2020-04-02 2021-10-26 合肥龙发智能科技有限公司 Block terminal system with remote monitoring

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101305484B1 (en) * 2012-03-29 2013-09-06 (주) 솔루윈스 Apparatus for sensing a power state using one pole type sensor in industrial distribution board
CN108181496A (en) * 2018-01-11 2018-06-19 国网山东省电力公司夏津县供电公司 Electric power circuit insulator safety device
CN113555798A (en) * 2020-04-02 2021-10-26 合肥龙发智能科技有限公司 Block terminal system with remote monitoring

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