KR101303082B1 - Apparatus for detecting partial discharge of portable - Google Patents

Apparatus for detecting partial discharge of portable Download PDF

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KR101303082B1
KR101303082B1 KR1020120026728A KR20120026728A KR101303082B1 KR 101303082 B1 KR101303082 B1 KR 101303082B1 KR 1020120026728 A KR1020120026728 A KR 1020120026728A KR 20120026728 A KR20120026728 A KR 20120026728A KR 101303082 B1 KR101303082 B1 KR 101303082B1
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partial discharge
sensor
module
portable
partial
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KR1020120026728A
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Korean (ko)
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최길수
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오피전력기술 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • 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
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G01R23/165—Spectrum analysis; Fourier analysis using filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/16—Construction of testing vessels; Electrodes therefor
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

PURPOSE: A portable partial-discharge detecting system is provided to convert measurement values of an ultra high frequency (UHF) electromagnetic partial-discharge sensor, an ultrasonic corona sensor, a transient earth voltage (TEV) sensor, and a high frequency current transducer (HFCT) sensor into digital signals, thereby analyzing phases, the amount of a discharge, and discharge magnitude with a phase resolved pulse sequence (PRPS) method and a phase resolved partial discharge (PRPD) method and monitoring waveforms, measurement frequency bands, and measurement values of each sensor. CONSTITUTION: A portable partial-discharge detecting system includes a device body (100) transmitting partial discharge measurement values measured by a plurality of sensors inside a distributing board to a portable partial discharge detecting device; and the portable partial discharge detecting device displaying partial discharge measurement data analyzed/processed by converting the partial discharge measurement values received from the device body into digital signals. The device body includes a sensor module (110); and a communication module (120) the partial discharge measurement values applied by the sensor module connected via a signal cable (10) to the portable partial discharge detecting device connected via an information communication network. The sensor module includes an HFCT sensor measuring partial discharges generated in a cable and a cable terminal inside the distributing board; a UHF electromagnetic partial-discharge sensor (112) measuring minute discharges generated by electric devices inside the distributing board; a TEV sensor sensing an internal discharge of the distributing board; and an ultrasonic corona sensor (114) tracing the position of the partial discharges generated by the electric devices inside the distributing board. [Reference numerals] (110) Sensor module; (111) HFTC sensor; (112) UHF sensor; (113) TEV sensor; (114) Ultrasonic corona sensor; (120) Communication module

Description

휴대형 부분방전 검출 장치{APPARATUS FOR DETECTING PARTIAL DISCHARGE OF PORTABLE}Portable partial discharge detection device {APPARATUS FOR DETECTING PARTIAL DISCHARGE OF PORTABLE}

본 발명은 휴대형 부분방전 검출 장치에 관한 것으로 더욱 상세하게는, 배전반 내부의 전력기기 열화 검출에 맞는 각각의 센서를 이용하여 복수의 부분방전 검출 센서를 이용하여 부분방전 발생유무를 측정 및 분석하는 기술에 관한 것이다.The present invention relates to a portable partial discharge detection device, and more particularly, a technology for measuring and analyzing the occurrence of partial discharge by using a plurality of partial discharge detection sensors using respective sensors suitable for detection of deterioration of power equipment inside a switchboard. It is about.

일반적으로 전원을 공급하는 설비 등을 내장하는 배전반은, 폐쇄형의 금속함으로 안전사고(예: 감전)를 방지하기 위해 외부에서 쉽게 접속할 수 없는 구조이다. 이러한 배전반 내부에 설치되어 있는 전력기기(예: 변압기, 부스바(bus bar) 및 차단기, 변성기, 전력케이블은 대부분이 고압기기로서 장시간 사용 시 절연열화가 진행되고, 이를 방치할 시 지락사고 및 단락사고로 이어져 인적·물적 손실을 초래한다.In general, a switchboard having a built-in equipment for supplying power is a closed metal structure, which is not easily accessible from the outside in order to prevent safety accidents (eg electric shock). Most power devices installed inside such switchboards (e.g. transformers, bus bars and breakers, transformers, and power cables) are mostly high voltage devices, and the insulation deteriorates when they are used for a long time. It leads to accidents, resulting in human and material loss.

전력 케이블은 고압 전력 설비 중의 하나로서 현장의 점검 및 기술원들이 주로 접하게 되는 현장의 일반 및 대용량 수용가에서 주요한 설비로 적정한 측정을 통한 정밀 분석이 필요하며, 이러한 주요 측정 및 분석 기법 중의 하나인 부분 방전 측정 기술에 대해 많은 연구 개발들이 진행되고 있다.The power cable is one of the high voltage power equipments, and it is the main equipment in the field and general customers who are mainly in contact with technical staff. There is a lot of research and development going on in technology.

부분 방전은 절연체의 전체적인 절연 파괴가 아니라, 코로나와 같은 국부적인 대기중 방전과 내부적으로 장기간 운전되는 고압 설비에서 절연체 내에 존재하는 보이드에서 발생하는 열화의 마지막 단계에 해당하는 현상으로, 부분 방전의 측정을 통한 절연체의 진단은 다른 방법에 비해 정확하다고 볼 수 있다. Partial discharge is not the entire dielectric breakdown of the insulator, but the final stage of degradation occurring in the voids present in the insulator in local atmospheric discharges such as corona and internally operated high pressure equipment for long periods of time. Diagnosis of insulators is more accurate than other methods.

부분 방전은 절연체 내의 결함의 형태, 인가전압의 종류 및 크기, 절연체의 종류 등에 따라 상당히 다른 특성을 보인다. 즉 부분 방전은 열화 상태에 대한 수많은 정보를 갖고 있다.Partial discharge shows considerably different characteristics depending on the type of defect in the insulator, the type and size of the applied voltage, the type of the insulator, and the like. That is, the partial discharge has a lot of information about the deteriorated state.

또한, 부분 방전은 어느 정도 고전압이 인가될 때 개시되고, 부분 방전 발생시 전류나 음향과 같은 부분 방전 신호를 발생시킨다. 그러나 이러한 부분 방전 신호는 상당히 미약하기 때문에 높은 정밀도를 갖는 방법을 이용하여 측정하게 된다. 즉, 극단적으로 큰 스트레스(고전압)가 인가될 때 극단적으로 작은 신호를 측정해야 하므로 상당한 어려움이 뒤따른다. 따라서 부분 방전이 절연 열화 및 절연 파괴에 대해 많은 정보를 가지고 있음에도 현재까지도 부분 방전의 현장 적용은 많은 어려운 문제들을 포함하고 있다. In addition, partial discharge starts when a high voltage is applied to a certain degree, and generates partial discharge signals such as current or sound when partial discharge occurs. However, since the partial discharge signal is very weak, it is measured using a method having high precision. In other words, when a very large stress (high voltage) is applied, an extremely small signal must be measured, which is a significant difficulty. Therefore, even though partial discharges have a great deal of information on insulation degradation and dielectric breakdown, the field application of partial discharges still contains many difficult problems.

도 1에 도시된 선행특허 제10-709694호(수배전반 절연열화 예측시스템 및 방법)를 살피면, 내부설치기기 각각의 부분방전에 대응한 온도측정신호를 획득하도록 수배전반의 내부에서 설치된 복수개의 적외선 온도센서와; 적외선 온도센서와 전기적으로 결합된 센서입력단을 통해 온도측정신호를 입력받은 후 아날로그-디지털 컨버터를 통해 온도측정신호를 RS485통신이 가능한 프로토콜로 변환시키도록 수배전반에 설치된 인디케이터와; 인디케이터의 프로토콜을 컴퓨터통신용 프로토콜로 변환시키도록 인디케이터와 연결된 통신컨버터와; 통신컨버터의 프로토콜 변환에 대응하여 온도측정신호로부터 변화된 온도측정값을 실시간으로 입력받아 온도측정값을 공유하도록, 통신컨버터가 접속된 네트워크망을 통해서 상호 연결되고, 미리 기준 부분방전량 모델값이 각각 설정된 복수개의 컴퓨터를 포함하되, 컴퓨터가 온도측정값을 기준 부분방전량 모델값과 비교 체크하여 내부설치기기의 온도별 절연열화상태인 안전, 주의, 경고, 위험, 사고 중 어느 하나를 검출하여 해당 온도측정값과 함께 컴퓨터의 감시화면상에 표시하는 구성이 개시되어 있습니다.Referring to the prior patent No. 10-709694 (system and method for predicting insulation degradation of a switchgear) shown in FIG. 1, a plurality of infrared temperature sensors installed inside the switchgear to obtain a temperature measurement signal corresponding to a partial discharge of each of the internal installation devices. Wow; An indicator installed in the switchgear to receive the temperature measurement signal through a sensor input terminal electrically coupled with the infrared temperature sensor and to convert the temperature measurement signal into a protocol capable of RS485 communication through an analog-digital converter; A communication converter connected with the indicator to convert the protocol of the indicator into a protocol for computer communication; Corresponding to the protocol conversion of the communication converter in order to receive the temperature measurement value changed from the temperature measurement signal in real time, so that the communication converter is interconnected through a network connected to each other, and the reference partial discharge quantity model values are previously Including a plurality of computers set up, the computer detects any one of safety, caution, warning, danger, and accident of insulation deterioration by temperature of the internal installation device by checking the temperature measured value against the standard partial discharge model value. The configuration of displaying on the computer monitoring screen together with the temperature measurement is disclosed.

전술한 바와 같은 배전반 부분방전 측정방법에는 각 센서를 이용한 배전반 내부 전력기기 및 케이블의 부분방전을 측정하는 방법이 일부 개시되어 있으나, 각 센서 마다 장비가 필요하여 측정자가 혼자서 운반 및 작동하기에는 시간과 힘이 많이 소요되어 비효율적이며 각 장비에 따르는 가격이 만만치 않다. 또한 부피가 커서 보관 및 이동에도 한계가 있다.As described above, the method for measuring the partial discharge of the switchboard discloses a method of measuring the partial discharge of the internal power device and the cable using the respective sensors. This is inefficient and inefficient, and the cost of each piece of equipment is daunting. In addition, there is a limit to storage and movement due to its large volume.

본 발명은 배전반 내부의 전력기기들로부터 발생되는 미세방전을 측정하는 전자파(UHF) 부분방전 센서, 초음파 코로나 센서, TEV센서 및 케이블 부분방전을 측정하는 HFCT센서의 측정된 값을 디지털신호로 변환함으로써, 위상-방전량-방전크기를 PRPS(Phase Resolved Pulse Sequence) 및 PRPD(Phase Resolved Partial Discharge) 기법으로 분석하고, 각 센서에 따른 파형, 측정 주파수 대역 및 측정값을 모니터링함에 그 목적이 있다.The present invention converts the measured values of an electromagnetic wave (UHF) partial discharge sensor, an ultrasonic corona sensor, a TEV sensor, and a cable HFCT sensor to measure the microdischarges generated from power devices inside the switchboard into digital signals. The purpose of this study is to analyze the phase-discharge amount-discharge size by using Phase Resolved Pulse Sequence (PRPS) and Phase Resolved Partial Discharge (PRPD) techniques, and to monitor waveforms, measurement frequency bands, and measured values according to each sensor.

또한, 본 발명은 활선상태의 고압배전반 내부 전력기기 및 고압케이블의 열화를 조기에 검출하기 위해 휴대형 부분방전 검출장치 본체와 열화검출 용도가 다른 다수의 열화검출센서를 본체와 호환하도록 구성함으로써, 현장에서 용이하게 고압설비 열화를 활선상태에서 검출함에 그 목적이 있다.In addition, the present invention is configured by making the portable partial discharge detection device main body and a plurality of deterioration detection sensors different from the deterioration detection application to be compatible with the main body in order to detect the degradation of the internal power equipment and high-voltage cable in the live state of the high-voltage distribution panel in the live state, The purpose is to easily detect high-pressure equipment deterioration in a live state.

또한, 본 발명은 배전반 내부의 전력기기 및 케이블로부터 발생되는 부분방전신호를 측정자가 간편하게 휴대하여 전력기기별 절연열화 검출에 적합한 부분방전센서를 이용하여 측정함과 동시에 실시간 정밀분석 함으로써, 현장에서 객관적인 측정결과를 제공하여 실시간으로 열화 정도를 확인하고, 사고발생 가능성을 사전에 예측하도록 함에 그 목적이 있다.In addition, the present invention by measuring the partial discharge signal generated from the power device and the cable inside the switchboard, the portable device is easy to carry out the measurement by using a partial discharge sensor suitable for the detection of insulation degradation for each power device and at the same time real-time precise analysis, objective The purpose is to provide measurement results to check the degree of deterioration in real time and to predict the possibility of an accident in advance.

이러한 기술적 과제를 달성하기 위한 본 발명의 휴대형 부분방전 검출 장치는, 배전반에 구비된 복수개의 센서들을 통해 측정한 부분방전 측정값을 휴대형 부분방전 검출기(200)로 전송하는 장치본체(100); 및 장치본체(100)로부터 수신한 부분방전 측정값을 디지털 신호로 변환하여 분석/가공된 부분방전 측정데이터를 디스플레이하는 휴대형 부분방전 검출기(200);를 포함한다.The portable partial discharge detection apparatus of the present invention for achieving the technical problem, the apparatus main body 100 for transmitting the partial discharge measurement value measured through a plurality of sensors provided in the switchboard to the portable partial discharge detector (200); And a portable partial discharge detector 200 for converting the partial discharge measurement value received from the apparatus main body 100 into a digital signal to display the analyzed / processed partial discharge measurement data.

또한, 장치본체(100)는, 배전반 내부의 케이블, 케이블 단말 또는 전력기기로부터 발생되는 부분방전을 측정하는 센서모듈(110); 및 시그널 케이블(10)을 통해 접속된 센서모듈(110)로부터 인가받은 부분방전 측정값을 정보통신망을 통해 접속된 휴대형 부분방전 검출기(200)로 전송하는 통신모듈(120);을 포함한다.In addition, the apparatus main body 100 includes a sensor module 110 for measuring a partial discharge generated from a cable, a cable terminal or a power device inside the switchboard; And a communication module 120 for transmitting the partial discharge measurement value received from the sensor module 110 connected through the signal cable 10 to the portable partial discharge detector 200 connected through the information communication network.

또한, 센서모듈(110)은, 배전반 내부의 케이블 및 케이블 단말로부터 발생되는 부분방전을 측정하는 HFCT(High Frequency Current Transformer) 센서(111); 배전반 내부의 전력기기로부터 발생되는 미세방전을 측정하는 UHF(Ultra High Frequency) 전자파 센서(112); 배전반 내부 방전을 감지하는 TEV(Transient Earth Voltage) 센서(113); 및 배전반 내부의 전력기기로부터 발생되는 부분방전의 위치를 추적하는 초음파 코로나 센서(114);를 포함한다.In addition, the sensor module 110, the HFCT (High Frequency Current Transformer) sensor 111 for measuring the partial discharge generated from the cable and the cable terminal inside the switchboard; Ultra High Frequency (UHF) electromagnetic wave sensor 112 for measuring microdischarges generated from power devices inside the switchboard; A transient earth voltage (TEV) sensor 113 for detecting internal discharge of the switchboard; And an ultrasonic corona sensor 114 for tracking the position of the partial discharge generated from the power device inside the switchboard.

또한, HFCT 센서(111)는 개폐방식의 크래프 타입으로 구성되고, 100kHz 내지 90MHz의 주파수 측정범위를 갖으며, 고압케이블 접지선의 방전전류를 검출하고, UHF 전자파 센서(112)는 마이크로스트립패치 타입으로 구성되고, 300MHz 내지 3000MHz의 주파수 측정범위를 갖으며, 개방구조의 배전반 내부 전자파 방전 신호를 검출하고, TEV 센서(113)는 C-커플러(자석식) 타입으로 구성되고, 1MHz 내지 50MHz의 주파수 측정범위를 갖으며, 밀폐구조의 배전반 내부 방전을 검출하고, 초음파 코로나 센서(114)는 마이크로폰 타입으로 구성되고, 40kHz의 주파수 측정범위를 갖으며, 개방구조의 배전반내부 초음파 음향을 검출하는 것을 특징으로 한다.In addition, the HFCT sensor 111 is composed of the open and close type of creep type, has a frequency measuring range of 100kHz to 90MHz, detects the discharge current of the high-voltage cable ground line, UHF electromagnetic sensor 112 is a microstrip patch type It is configured, has a frequency measuring range of 300MHz to 3000MHz, detects the electromagnetic discharge signal inside the switchgear of the open structure, the TEV sensor 113 is configured of a C-coupler (magnetic) type, frequency measuring range of 1MHz to 50MHz It detects the internal discharge of the switchgear of the closed structure, the ultrasonic corona sensor 114 is of a microphone type, has a frequency measuring range of 40kHz, characterized in that for detecting the ultrasonic sound inside the switchgear of the open structure. .

또한, 통신모듈(120)은, 시그널 케이블(10)을 통해 연결된 상기 센서모듈(110)로부터 부분방전 측정값을 인가받고, 인가받은 부분방전 측정값을 휴대형 부분방전 검출기(200)로 전송하되, 휴대형 부분방전 검출기(200)로의 부분방전 측정값 전송은 시그널 케이블(10) 접속에 의한 유선통신(TCP/IP통신 또는 RS-232통신) 또는 무선통신(3G, 4G 또는 WIFI) 중에 어느 하나의 통신에 의해 전송하는 것을 특징으로 한다.In addition, the communication module 120 receives the partial discharge measurement value from the sensor module 110 connected through the signal cable 10, and transmits the received partial discharge measurement value to the portable partial discharge detector 200, The transmission of the partial discharge measurement value to the portable partial discharge detector 200 may be performed either by wired communication (TCP / IP communication or RS-232 communication) or wireless communication (3G, 4G or WIFI) by a signal cable 10 connection. It is characterized by transmitting by.

또한, 장치본체(100)는, 센서모듈(110)과 통신모듈(120)과의 접속을 스위칭하는 스위칭 모듈(130); 및 스위칭 모듈(130)과 접속되어 인가받은 부분방전 측정값을 증폭하는 증폭회로(140);를 더 포함하여 구성되되, 스위칭 모듈(130)은 스위칭 회로를 토대로 상기 센서모듈(110)의 HFCT 센서(111), UHF 전자파 센서(112), TEV 센서(113) 및 초음파 코로나 센서(114) 각각과 스위칭을 통해 인가받은 부분방전 측정값을 증폭회로(140)로 인가하고, 증폭회로(140)는 스위칭 모듈(130)을 경유하여 센서모듈(110)의 HFCT 센서(111), UHF 전자파 센서(112), TEV 센서(113) 및 초음파 코로나 센서(114) 각각으로부터 인가받은 부분방전 측정값을 아날로그 회로를 토대로 필터링 및 증폭하여 상기 통신모듈(120)로 인가하는 것을 특징으로 한다.In addition, the apparatus main body 100, the switching module 130 for switching the connection between the sensor module 110 and the communication module 120; And an amplifying circuit 140 connected to the switching module 130 to amplify the partial discharge measurement value applied thereto, wherein the switching module 130 is based on the switching circuit HFCT sensor of the sensor module 110. (111), the UHF electromagnetic wave sensor 112, the TEV sensor 113 and the ultrasonic corona sensor 114 and the partial discharge measurement value applied through the switching is applied to the amplifier circuit 140, the amplification circuit 140 is The partial discharge measurement value applied from each of the HFCT sensor 111, the UHF electromagnetic wave sensor 112, the TEV sensor 113, and the ultrasonic corona sensor 114 of the sensor module 110 via the switching module 130 is converted into an analog circuit. Based on the filtering and amplification based on the applied to the communication module 120.

또한, 휴대형 부분방전 검출기(200)는, 장치본체(100)로부터 수신한 부분방전 측정값을 디지털 신호로 변환하는 A/D변환모듈(210); PRPD(Phase Resolved Partial Discharge) 기법에 따라 상기 A/D변환모듈(210)로부터 인가받은 부분방전 측정값으로부터 위상각(

Figure 112012021097129-pat00001
)-방전전하량(
Figure 112012021097129-pat00002
)-발생빈도수(
Figure 112012021097129-pat00003
)를 산출하고 방전의 크기(
Figure 112012021097129-pat00004
)를 산출하여 부분방전 측정데이터를 생성하고, 부분방전 측정데이터를 수치화 및 도식화한 부분방전 그래프를 생성하는 분석모듈(220); 및 분석모듈(220)로부터 인가받은 부분방전 측정데이터 및 부분방전 그래프를 디스플레이 회로를 통해 출력하는 디스플레이모듈(230);을 포함한다.In addition, the portable partial discharge detector 200 includes an A / D conversion module 210 for converting a partial discharge measurement value received from the apparatus main body 100 into a digital signal; Phase angle from the partial discharge measurement value received from the A / D conversion module 210 according to the Phase Resolved Partial Discharge (PRPD) technique
Figure 112012021097129-pat00001
) -Discharge charge (
Figure 112012021097129-pat00002
)-Frequency of occurrence (
Figure 112012021097129-pat00003
) And the magnitude of the discharge (
Figure 112012021097129-pat00004
An analysis module 220 for generating a partial discharge measurement data by calculating a) and generating a partial discharge graph in which the partial discharge measurement data is digitized and plotted; And a display module 230 for outputting the partial discharge measurement data and the partial discharge graph received from the analysis module 220 through the display circuit.

또한, 휴대형 부분방전 검출기(200)는, 파워회로를 토대로 배터리 또는 외부전원기기로부터 인가되는 전원을 관리하는 전원모듈(240); 및 분석모듈(220)로부터 인가받은 부분방전 측정데이터 및 부분방전 그래프를 저장하는 내부메모리(251)와 내부메모리(251)에 저장된 부분방전 측정데이터 및 부분방전 그래프를 보관하고, 착탈이 가능한 구비된 SD메모리(252)로 구성된 저장모듈(250);을 더 포함한다.In addition, the portable partial discharge detector 200 includes a power module 240 that manages power applied from a battery or an external power supply based on a power circuit; And an internal memory 251 for storing the partial discharge measurement data and the partial discharge graph received from the analysis module 220 and the partial discharge measurement data and the partial discharge graph stored in the internal memory 251 and are detachable. The storage module 250 is configured as an SD memory 252.

상기와 같은 본 발명에 따르면, HFCT센서를 이용하여 케이블 부분방전을 측정함으로써, 케이블 열화정도를 판단하여 사고를 미연에 방지하는 효과가 있다.According to the present invention as described above, by measuring the cable partial discharge using the HFCT sensor, it is effective to prevent the accident in advance by determining the degree of cable degradation.

또한, 본 발명에 따르면, UHF센서와 TEV센서를 사용하여 완전 밀폐된 배전반 내부 전력기기에 대한 전자파 부분방전을 측정함으로써, 밀폐된 배전반 내의 전력기기에서 발생하는 방전여부와 열화정도를 실시간으로 확인하는 효과가 있다.In addition, according to the present invention, by using the UHF sensor and the TEV sensor to measure the electromagnetic partial discharge for the power unit inside the fully enclosed switchgear, it is confirmed in real time whether the discharge generated in the power device in the sealed switchgear and the degree of degradation It works.

또한, 본 발명에 따르면, 초음파 코로나센서를 이용하여 부분방전 발생위치를 대략적 위치까지 동시에 확인하는 효과가 있다.In addition, according to the present invention, there is an effect of simultaneously confirming the partial discharge generation position to the approximate position using the ultrasonic corona sensor.

그리고, 본 발명에 따르면, PRPS(Phase Resolved Pulse Sequence) 또는 PRPD(Phase Resolved Partial Discharge) 기법에 의해 측정된 데이터를 토대로 배전반 내부 부분방전 분석을 용이하게 관리토록 함으로써, 부분방전 발생으로 인한 사고를 미연에 방지할 수 있고, 그 관리에 따른 인적·물적 자원의 비용절감을 도모하는 효과가 있다.In addition, according to the present invention, it is possible to easily manage the internal partial discharge analysis of the switchboard based on the data measured by a Phase Resolved Pulse Sequence (PRPS) or a Phase Resolved Partial Discharge (PRPD) technique, thereby preventing accidents caused by partial discharges. It is possible to prevent the cost of human resources and human resources.

도 1은 종래의 수배전반 절연열화 예측시스템을 도시한 구성도.
도 2는 본 발명에 따른 휴대형 부분방전 검출 장치를 도시한 구성도.
도 3은 본 발명에 따른 휴대형 부분방전 검출 장치의 장치본체를 도시한 구성도.
도 4는 본 발명에 따른 휴대형 부분방전 검출 장치의 장치본체를 도시한 또 다른 구성도.
도 5는 본 발명에 따른 휴대형 부분방전 검출 장치의 스위칭 회로를 도시한 회로도.
도 6은 본 발명에 따른 휴대형 부분방전 검출 장치의 아날로그 회로를 도시한 회로도.
도 7은 본 발명에 따른 휴대형 부분방전 검출 장치의 부분방전 검출기를 도시한 구성도.
도 8은 본 발명에 따른 휴대형 부분방전 검출 장치의 디스플레이 회로를 도시한 회로도.
도 9는 본 발명에 따른 휴대형 부분방전 검출 장치의 파워회로를 도시한 회로도.
도 10은 본 발명에 따른 휴대형 부분방전 검출 장치의 SD카드 컨넥터 회로를 도시한 회로도.1 is a block diagram showing a conventional switchboard insulation degradation prediction system.
2 is a block diagram showing a portable partial discharge detection apparatus according to the present invention.
3 is a block diagram showing the main body of the portable partial discharge detection apparatus according to the present invention.
Figure 4 is another configuration diagram showing the main body of the portable partial discharge detection apparatus according to the present invention.
5 is a circuit diagram showing a switching circuit of the portable partial discharge detection apparatus according to the present invention.
6 is a circuit diagram showing an analog circuit of the portable partial discharge detection apparatus according to the present invention.
7 is a block diagram showing a partial discharge detector of the portable partial discharge detection apparatus according to the present invention.
8 is a circuit diagram showing a display circuit of the portable partial discharge detection apparatus according to the present invention.
9 is a circuit diagram showing a power circuit of the portable partial discharge detection apparatus according to the present invention.
10 is a circuit diagram showing an SD card connector circuit of the portable partial discharge detection apparatus according to the present invention.

본 발명의 구체적인 특징 및 이점들은 첨부도면에 의거한 다음의 상세한 설명으로 더욱 명백해질 것이다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 발명자가 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야 할 것이다. 또한, 본 발명에 관련된 공지 기능 및 그 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는, 그 구체적인 설명을 생략하였음에 유의해야 할 것이다.Specific features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It should be interpreted in terms of meaning and concept. It is to be noted that the detailed description of known functions and constructions related to the present invention is omitted when it is determined that the gist of the present invention may be unnecessarily blurred.

도 2에 도시된 바와 같이 본 발명에 따른 휴대형 부분방전 검출 장치(A)는, 배전반에 구비된 복수개의 센서들을 통해 측정한 부분방전 측정값을 휴대형 부분방전 검출기(200)로 전송하는 장치본체(100), 및 장치본체(100)로부터 수신한 부분방전 측정값을 디지털 신호로 변환하여 분석/가공된 부분방전 측정데이터를 디스플레이하는 휴대형 부분방전 검출기(200)로 구성된다.As shown in FIG. 2, the portable partial discharge detection device A according to the present invention includes a device body for transmitting a partial discharge measurement value measured through a plurality of sensors provided in a switchboard to the portable partial discharge detector 200 ( 100) and a portable partial discharge detector 200 which converts the partial discharge measurement value received from the apparatus main body 100 into a digital signal and displays the analyzed / processed partial discharge measurement data.

도 3에 도시된 바와 같이 장치본체(100)는, 배전반 내부의 케이블, 케이블 단말 또는 전력기기로부터 발생되는 부분방전을 측정하는 센서모듈(110)과, 시그널 케이블(10)을 통해 접속된 센서모듈(110)로부터 인가받은 부분방전 측정값을 정보통신망을 통해 접속된 휴대형 부분방전 검출기(200)로 전송하는 통신모듈(120)로 구성된다.As shown in FIG. 3, the apparatus main body 100 includes a sensor module 110 for measuring partial discharge generated from a cable, a cable terminal, or a power device inside a switchboard, and a sensor module connected through a signal cable 10. It consists of a communication module 120 for transmitting the partial discharge measurement value received from the 110 to the portable partial discharge detector 200 connected through the information communication network.

구체적으로, 센서모듈(110)은 고압 배전반 내부의 케이블 및 케이블 단말로부터 발생되는 부분방전을 측정하는 HFCT(High Frequency Current Transformer) 센서(111)와, 배전반 내부의 전력기기로부터 발생되는 미세방전을 측정하는 UHF(Ultra High Frequency) 전자파 센서(112)와, 배전반 내부 방전을 감지하는 TEV(Transient Earth Voltage) 센서(113) 및 배전반 내부의 전력기기로부터 발생되는 부분방전의 위치를 추적하는 초음파 코로나 센서(114)로 구성된다.Specifically, the sensor module 110 measures a high frequency current transformer (HFCT) sensor 111 for measuring partial discharge generated from a cable and a cable terminal inside the high-voltage switchgear, and measures fine discharge generated from a power device inside the switchboard. Ultra high frequency (UHF) electromagnetic wave sensor 112, a transient earth voltage (TEV) sensor 113 for detecting internal discharge of the switchboard, and an ultrasonic corona sensor for tracking the position of the partial discharge generated from the power equipment inside the switchboard ( 114).

이때, HFCT 센서(111)는 개폐방식의 크래프 타입으로 구성되고, 100kHz 내지 90MHz의 주파수 측정범위를 갖으며, 고압케이블 접지선의 방전전류를 검출한다.At this time, the HFCT sensor 111 is composed of a type of open and close craft type, has a frequency measuring range of 100kHz to 90MHz, detects the discharge current of the high-voltage cable ground line.

또한, UHF 전자파 센서(112)는 마이크로스트립패치 타입으로 구성되고, 300MHz 내지 3000MHz의 주파수 측정범위를 갖으며, 개방구조의 배전반 내부 전자파 방전 신호를 검출한다.In addition, the UHF electromagnetic sensor 112 is configured of a microstrip patch type, has a frequency measuring range of 300 MHz to 3000 MHz, and detects an electromagnetic discharge signal inside an open switchboard.

또한, TEV 센서(113)는 C-커플러(자석식) 타입으로 구성되고, 1MHz 내지 50MHz의 주파수 측정범위를 갖으며, 밀폐구조의 배전반 내부 방전을 검출한다.In addition, the TEV sensor 113 is configured of a C-coupler (magnetic) type, has a frequency measuring range of 1 MHz to 50 MHz, and detects an internal discharge of a switchboard having a sealed structure.

그리고, 초음파 코로나 센서(114)는 마이크로폰 타입으로 구성되고, 40kHz의 주파수 측정범위를 갖으며, 개방구조의 배전반내부 초음파 음향을 검출한다.In addition, the ultrasonic corona sensor 114 is configured of a microphone type, has a frequency measuring range of 40 kHz, and detects ultrasonic sound inside the switchboard of an open structure.

한편, 통신모듈(120)은 시그널 케이블(10)을 통해 연결된 센서모듈(110)로부터 부분방전 측정값을 인가받고, 인가받은 부분방전 측정값을 정보통신망을 통해 접속된 휴대형 부분방전 검출기(200)로 전송하되, 휴대형 부분방전 검출기(200)로의 부분방전 측정값 전송은 시그널 케이블(10) 접속에 의한 유선통신(TCP/IP통신 또는 RS-232통신) 또는 무선통신(3G, 4G 또는 WIFI) 중에 어느 하나의 통신에 의해 전송될 수 있으며, 본 발명이 이에 국한되는 것은 아니다.
Meanwhile, the communication module 120 receives the partial discharge measurement value from the sensor module 110 connected through the signal cable 10, and the portable partial discharge detector 200 connected the received partial discharge measurement value through the information communication network. The partial discharge measurement value is transmitted to the portable partial discharge detector 200 during wired communication (TCP / IP communication or RS-232 communication) or wireless communication (3G, 4G or WIFI) by a signal cable 10 connection. It may be transmitted by any one communication, the present invention is not limited thereto.

또한, 도 4에 도시된 바와 같이 장치본체(100)는, 배전반에 구비된 센서모듈(110)과 통신모듈(120)과의 접속을 스위칭하는 스위칭 모듈(130)과, 스위칭 모듈(130)과 접속되어 인가받은 부분방전 측정값을 증폭하는 증폭회로(140)를 더 포함하여 구성된다.In addition, as shown in FIG. 4, the apparatus main body 100 includes a switching module 130 for switching a connection between the sensor module 110 and the communication module 120 provided in the switchboard, and the switching module 130. And an amplifying circuit 140 for amplifying the connected partial discharge measurement value.

여기서, 스위칭 모듈(130)은 도 5에 도시된 스위칭 회로를 토대로 센서모듈(110)의 HFCT 센서(111), UHF 전자파 센서(112), TEV 센서(113) 및 초음파 코로나 센서(114) 각각과 스위칭을 통해 인가받은 부분방전 측정값을 증폭회로(140)로 인가한다.Here, the switching module 130 and the HFCT sensor 111, UHF electromagnetic wave sensor 112, TEV sensor 113 and the ultrasonic corona sensor 114 of the sensor module 110 based on the switching circuit shown in FIG. The partial discharge measurement value applied through the switching is applied to the amplifying circuit 140.

또한, 증폭회로(140)는 스위칭 모듈(130)을 경유하여 센서모듈(110)의 HFCT 센서(111), UHF 전자파 센서(112), TEV 센서(113) 및 초음파 코로나 센서(114) 각각으로부터 인가받은 부분방전 측정값을 도 6에 도시된 아날로그 회로를 토대로 필터링 및 증폭하여 통신모듈(120)로 인가한다.In addition, the amplifying circuit 140 is applied from the HFCT sensor 111, the UHF electromagnetic sensor 112, the TEV sensor 113 and the ultrasonic corona sensor 114 of the sensor module 110 via the switching module 130. The received partial discharge measurement value is filtered and amplified based on the analog circuit shown in FIG. 6 and applied to the communication module 120.

한편, 도 7에 도시된 바와 같이 휴대형 부분방전 검출기(200)는, 정보통신망을 통해 접속된 장치본체(100)로부터 수신한 부분방전 측정값을 디지털 신호로 변환하는 A/D변환모듈(210)과, A/D변환모듈(210)로부터 인가받은 디지털신호를 분석/가공하여 부분방전 측정데이터를 생성하는 분석모듈(220) 및 분석모듈(220)로부터 인가받은 부분방전 측정데이터를 출력하는 디스플레이모듈(230)을 포함하여 구성된다.Meanwhile, as shown in FIG. 7, the portable partial discharge detector 200 converts the partial discharge measurement value received from the apparatus main body 100 connected through the information communication network into a digital signal. And an analysis module 220 for generating partial discharge measurement data by analyzing / processing a digital signal received from the A / D conversion module 210 and a display module for outputting partial discharge measurement data received from the analysis module 220. 230.

구체적으로 A/D변환모듈(210)은 장치본체(100)의 통신모듈(120)로부터 수신한 부분방전 측정값을 디지털 신호로 변환하여 분석모듈(220)로 인가한다.In detail, the A / D conversion module 210 converts the partial discharge measurement value received from the communication module 120 of the device body 100 into a digital signal and applies it to the analysis module 220.

또한, 분석모듈(220)은 PRPS(Phase Resolved Pulse Sequence) 및 PRPD(Phase Resolved Partial Discharge) 기법에 따라 A/D변환모듈(210)로부터 인가받은 부분방전 측정값으로부터 위상각(

Figure 112012021097129-pat00005
)-방전전하량(
Figure 112012021097129-pat00006
)-발생빈도수(
Figure 112012021097129-pat00007
)를 산출하고, 방전의 크기(
Figure 112012021097129-pat00008
)를 산출하여 부분방전 측정데이터를 생성하고, 부분방전 측정데이터를 수치화 및 도식화한 부분방전 그래프를 생성한다.In addition, the analysis module 220 may determine the phase angle (PB) from the partial discharge measurement value applied from the A / D conversion module 210 according to the phase resolved pulse sequence (PRPS) and phase resolved partial discharge (PRPD) techniques.
Figure 112012021097129-pat00005
) -Discharge charge (
Figure 112012021097129-pat00006
)-Frequency of occurrence (
Figure 112012021097129-pat00007
), And the magnitude of the discharge (
Figure 112012021097129-pat00008
) To generate partial discharge measurement data, and generate a partial discharge graph numerically and graphically.

그리고, 디스플레이모듈(230)은 분석모듈(220)로부터 인가받은 부분방전 측정데이터 및 부분방전 그래프를 도 8에 도시된 디스플레이 회로를 통해 출력하도록 구성되며, 디스플레이 회로의 설계는 변경될 수 있다.
In addition, the display module 230 is configured to output the partial discharge measurement data and the partial discharge graph received from the analysis module 220 through the display circuit shown in FIG. 8, and the design of the display circuit may be changed.

아울러, 본 발명에 따른 휴대형 부분방전 검출기(200)는, 도 9에 도시된 파워회로를 토대로 배터리 또는 외부전원기기로부터 인가되는 전원을 관리하는 전원모듈(240)을 더 포함하여 구성되고, 분석모듈(220)로부터 인가받은 부분방전 측정데이터 및 부분방전 그래프를 저장하는 내부메모리(251)와 내부메모리(251)에 저장된 부분방전 측정데이터 및 부분방전 그래프를 보관하되, 착탈이 가능한 구비된 SD메모리(252)로 구성된 저장모듈(250)을 더 포함하여 구성될 수 있다.In addition, the portable partial discharge detector 200 according to the present invention further includes a power module 240 for managing power applied from a battery or an external power supply based on the power circuit shown in FIG. An internal memory 251 for storing the partial discharge measurement data and the partial discharge graph received from the 220 and the partial discharge measurement data and the partial discharge graph stored in the internal memory 251 are stored, and the removable SD memory ( The storage module 250 may be further configured to include a 252.

이때, SD메모리(252)는 도 10에 도시된 SD카드 컨넥터 회로에 의해 분석모듈(220)로부터 인가받은 부분방전 측정데이터 및 부분방전 그래프를 저장하도록 구성되나 본 발명이 이에 국한되는 것은 아니다.At this time, the SD memory 252 is configured to store the partial discharge measurement data and the partial discharge graph received from the analysis module 220 by the SD card connector circuit shown in FIG. 10, but the present invention is not limited thereto.

이상으로 본 발명의 기술적 사상을 예시하기 위한 바람직한 실시예와 관련하여 설명하고 도시하였지만, 본 발명은 이와 같이 도시되고 설명된 그대로의 구성 및 작용에만 국한되는 것이 아니며, 기술적 사상의 범주를 일탈함이 없이 본 발명에 대해 다수의 변경 및 수정이 가능함을 당업자들은 잘 이해할 수 있을 것이다. 따라서 그러한 모든 적절한 변경 및 수정과 균등 물들도 본 발명의 범위에 속하는 것으로 간주되어야 할 것이다.While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be appreciated by those skilled in the art that numerous changes and modifications may be made without departing from the invention. And all such modifications and changes as fall within the scope of the present invention are therefore to be regarded as being within the scope of the present invention.

A: 휴대형 부분방전 검출 장치
100: 장치본체 110: 전원모듈
111: HFCT 센서 112: UHF 전자파 센서
113: TEV 센서 114: 초음파 코로나 센서
120: 통신모듈 130: 스위칭 모듈
140: 증폭회로 200: 휴대형 부분방전 검출기
210: A/D변환모듈 220: 분석모듈
230: 디스플레이모듈 240: 전원모듈
250: 저장모듈 251: 내부메모리
252: SD메모리A: Portable Partial Discharge Detection Device
100: device body 110: power module
111: HFCT sensor 112: UHF electromagnetic sensor
113: TEV sensor 114: ultrasonic corona sensor
120: communication module 130: switching module
140: amplification circuit 200: portable partial discharge detector
210: A / D conversion module 220: analysis module
230: display module 240: power module
250: storage module 251: internal memory
252: SD memory

Claims (8)

휴대형 부분방전 검출 장치에 있어서,
배전반에 구비된 복수개의 센서들을 통해 측정한 부분방전 측정값을 휴대형 부분방전 검출기(200)로 전송하는 장치본체(100); 및
상기 장치본체(100)로부터 수신한 부분방전 측정값을 디지털 신호로 변환하여 분석/가공된 부분방전 측정데이터를 디스플레이하는 휴대형 부분방전 검출기(200);를 포함하되,
상기 장치본체(100)는,
배전반 내부의 케이블 및 케이블 단말로부터 발생되는 부분방전을 측정하는 HFCT(High Frequency Current Transducer) 센서(111)와; 배전반 내부의 전력기기로부터 발생되는 미세방전을 측정하는 UHF(Ultra High Frequency) 전자파 센서(112)와; 배전반 내부 방전을 감지하는 TEV(Transient Earth Voltage) 센서(113)와; 배전반 내부의 전력기기로부터 발생되는 부분방전의 위치를 추적하는 초음파 코로나 센서(114);로 구성된 센서모듈(110); 및
시그널 케이블(10)을 통해 접속된 상기 센서모듈(110)로부터 인가받은 부분방전 측정값을 정보통신망을 통해 접속된 상기 휴대형 부분방전 검출기(200)로 전송하는 통신모듈(120);을 포함하는 것을 특징으로 하는 휴대형 부분방전 검출 장치.In the portable partial discharge detection device,
The apparatus main body 100 for transmitting the partial discharge measurement value measured through a plurality of sensors provided in the switchboard to the portable partial discharge detector 200; And
And a portable partial discharge detector 200 for converting the partial discharge measurement value received from the apparatus main body 100 into a digital signal to display the analyzed / processed partial discharge measurement data.
The device body 100,
A high frequency current transducer (HFCT) sensor 111 for measuring a partial discharge generated from a cable inside the switchboard and a cable terminal; Ultra High Frequency (UHF) electromagnetic wave sensor 112 for measuring microdischarges generated from power devices inside the switchboard; A transient earth voltage (TEV) sensor 113 for detecting internal discharge of the switchboard; An ultrasonic corona sensor 114 for tracking the position of the partial discharge generated from the power device inside the switchboard; And
And a communication module 120 for transmitting the partial discharge measurement value received from the sensor module 110 connected through the signal cable 10 to the portable partial discharge detector 200 connected through the information communication network. A portable partial discharge detection device characterized by the above-mentioned. 삭제delete 삭제delete 제 1 항에 있어서,
상기 HFCT 센서(111)는 개폐방식의 크래프 타입으로 구성되고, 100kHz 내지 90MHz의 주파수 측정범위를 갖으며, 고압케이블 접지선의 방전전류를 검출하고,
상기 UHF 전자파 센서(112)는 마이크로스트립패치 타입으로 구성되고, 300MHz 내지 3000MHz의 주파수 측정범위를 갖으며, 개방구조의 배전반 내부 전자파 방전 신호를 검출하고,
상기 TEV 센서(113)는 C-커플러(자석식) 타입으로 구성되고, 1MHz 내지 50MHz의 주파수 측정범위를 갖으며, 밀폐구조의 배전반 내부 방전을 검출하고,
상기 초음파 코로나 센서(114)는 마이크로폰 타입으로 구성되고, 40kHz의 주파수 측정범위를 갖으며, 개방구조의 배전반내부 초음파 음향을 검출하는 것을 특징으로 하는 휴대형 부분방전 검출 장치.The method of claim 1,
The HFCT sensor 111 is composed of an open-closed craft type, has a frequency measuring range of 100kHz to 90MHz, detects the discharge current of the high-voltage cable ground line,
The UHF electromagnetic wave sensor 112 is composed of a microstrip patch type, has a frequency measuring range of 300 MHz to 3000 MHz, and detects an electromagnetic discharge signal inside an open switchboard.
The TEV sensor 113 is configured as a C-coupler (magnetic) type, has a frequency measuring range of 1 MHz to 50 MHz, and detects an internal discharge of a switchboard having a sealed structure,
The ultrasonic corona sensor 114 is of a microphone type, has a frequency measuring range of 40kHz, portable partial discharge detection device, characterized in that for detecting the ultrasonic sound inside the switchgear of the open structure. 제 1 항에 있어서,
상기 통신모듈(120)은,
시그널 케이블(10)을 통해 연결된 상기 센서모듈(110)로부터 부분방전 측정값을 인가받고, 인가받은 부분방전 측정값을 상기 휴대형 부분방전 검출기(200)로 전송하되,
상기 휴대형 부분방전 검출기(200)로의 부분방전 측정값 전송은 시그널 케이블(10) 접속에 의한 유선통신(TCP/IP통신 또는 RS-232통신) 또는 무선통신(3G, 4G 또는 WIFI) 중에 어느 하나의 통신에 의해 전송하는 것을 특징으로 하는 휴대형 부분방전 검출 장치.The method of claim 1,
The communication module 120,
Receives a partial discharge measurement value from the sensor module 110 connected through the signal cable 10, and transmits the applied partial discharge measurement value to the portable partial discharge detector 200,
The partial discharge measurement value transmission to the portable partial discharge detector 200 may be performed by any one of wired communication (TCP / IP communication or RS-232 communication) or wireless communication (3G, 4G or WIFI) by a signal cable 10 connection. Portable partial discharge detection device characterized in that the transmission by communication. 제 1 항에 있어서,
상기 장치본체(100)는,
상기 센서모듈(110)과 통신모듈(120)과의 접속을 스위칭하는 스위칭 모듈(130); 및
상기 스위칭 모듈(130)과 접속되어 인가받은 부분방전 측정값을 증폭하는 증폭회로(140);를 더 포함하여 구성되되,
상기 스위칭 모듈(130)은 스위칭 회로를 토대로 상기 센서모듈(110)의 HFCT 센서(111), UHF 전자파 센서(112), TEV 센서(113) 및 초음파 코로나 센서(114) 각각과 스위칭을 통해 인가받은 부분방전 측정값을 상기 증폭회로(140)로 인가하고, 상기 증폭회로(140)는 상기 스위칭 모듈(130)을 경유하여 상기 센서모듈(110)의 HFCT 센서(111), UHF 전자파 센서(112), TEV 센서(113) 및 초음파 코로나 센서(114) 각각으로부터 인가받은 부분방전 측정값을 아날로그 회로를 토대로 필터링 및 증폭하여 상기 통신모듈(120)로 인가하는 것을 특징으로 하는 휴대형 부분방전 검출 장치.The method of claim 1,
The device body 100,
A switching module 130 for switching a connection between the sensor module 110 and the communication module 120; And
And an amplifying circuit 140 connected to the switching module 130 to amplify the partial discharge measurement value applied thereto.
The switching module 130 is applied through switching with each of the HFCT sensor 111, the UHF electromagnetic sensor 112, the TEV sensor 113, and the ultrasonic corona sensor 114 of the sensor module 110 based on a switching circuit. The partial discharge measurement value is applied to the amplifying circuit 140, and the amplifying circuit 140 transmits the HFCT sensor 111 and the UHF electromagnetic sensor 112 of the sensor module 110 via the switching module 130. And the partial discharge measurement value applied from each of the TEV sensor 113 and the ultrasonic corona sensor 114 is filtered and amplified based on an analog circuit and applied to the communication module 120. 제 1 항에 있어서,
상기 휴대형 부분방전 검출기(200)는,
상기 장치본체(100)로부터 수신한 부분방전 측정값을 디지털 신호로 변환하는 A/D변환모듈(210);
PRPS(Phase Resolved Pulse Sequence) 및 PRPD(Phase Resolved Partial Discharge) 기법에 따라 상기 A/D변환모듈(210)로부터 인가받은 부분방전 측정값으로부터 위상각(
Figure 112013044901961-pat00009
)-방전전하량(
Figure 112013044901961-pat00010
)-발생빈도수(
Figure 112013044901961-pat00011
)를 산출하고 방전의 크기(
Figure 112013044901961-pat00012
)를 산출하여 부분방전 측정데이터를 생성하고, 부분방전 측정데이터를 수치화 및 도식화한 부분방전 그래프를 생성하는 분석모듈(220); 및
상기 분석모듈(220)로부터 인가받은 부분방전 측정데이터 및 부분방전 그래프를 디스플레이 회로를 통해 출력하는 디스플레이모듈(230);을 포함하는 것을 특징으로 하는 휴대형 부분방전 검출 장치.The method of claim 1,
The portable partial discharge detector 200,
An A / D conversion module 210 for converting the partial discharge measurement value received from the apparatus main body 100 into a digital signal;
Phase angle from the partial discharge measurement value applied from the A / D conversion module 210 according to the Phase Resolved Pulse Sequence (PRPS) and Phase Resolved Partial Discharge (PRPD) techniques.
Figure 112013044901961-pat00009
) -Discharge charge (
Figure 112013044901961-pat00010
)-Frequency of occurrence (
Figure 112013044901961-pat00011
) And the magnitude of the discharge (
Figure 112013044901961-pat00012
An analysis module 220 for generating a partial discharge measurement data by calculating a) and generating a partial discharge graph in which the partial discharge measurement data is digitized and plotted; And
And a display module (230) for outputting the partial discharge measurement data and the partial discharge graph received from the analysis module (220) through a display circuit. 제 7 항에 있어서,
상기 휴대형 부분방전 검출기(200)는,
파워회로를 토대로 배터리 또는 외부전원기기로부터 인가되는 전원을 관리하는 전원모듈(240); 및
상기 분석모듈(220)로부터 인가받은 부분방전 측정데이터 및 부분방전 그래프를 저장하는 내부메모리(251)와 내부메모리(251)에 저장된 부분방전 측정데이터 및 부분방전 그래프를 보관하고, 착탈이 가능한 구비된 SD메모리(252)로 구성된 저장모듈(250);을 더 포함하는 것을 특징으로 하는 휴대형 부분방전 검출 장치.The method of claim 7, wherein
The portable partial discharge detector 200,
A power module 240 for managing power applied from a battery or an external power device based on the power circuit; And
The internal memory 251 for storing the partial discharge measurement data and the partial discharge graph received from the analysis module 220 and the partial discharge measurement data and the partial discharge graph stored in the internal memory 251 are stored and detachable. Portable partial discharge detection device further comprises; storage module (250) consisting of an SD memory (252).
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