• 제목/요약/키워드: UHF PD

검색결과 113건 처리시간 0.031초

VHF 센서를 이용한 GIS에서 부분방전 측정 기법 (Partial Discharge Measuring Technique in GIS using VHF Sensors)

  • 김정태;김동욱;이영조;구자윤;김지홍
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2011년도 제42회 하계학술대회
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    • pp.2063-2064
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    • 2011
  • UHF PD sensor has some disadvantages in measuring void discharges due to their frequency characteristics lower than 300MHz. Therefore, in this study, the possibility of VHF sensor in measuring partial discharges(PD) in GIS was investigated using simulated experiments. As a result, by installing VHF sensors to the copper bus of the encloser in GIS, it is confirmed that partial discharges could be perfectly detected, which means that VHF PD measuring technique can be the alternative of UHF PD method.

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GIS에 있어서 UHF법을 이용한 부분방전 검출에 대한 연구 (A Study on the PD Detection Using a UHF Method in GIS)

  • 윤진열;정길조;??재구;김광화;한상옥
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1999년도 하계학술대회 논문집 E
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    • pp.2063-2065
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    • 1999
  • PD pulses have about one nanosecond rise time in the $SF_6$ gas insulation. These pulses propagate through GIS chamber to PD sensors in the form of the electromagnetic radiation. In this paper, we investigated the characteristics of disc sensors and monopole antenna, by putting high frequency signals into the test cell in $SF_6$ gas by means of a Ins rise time pulse generator and 60Hz power supply respectively. Also, we measured PD quantity from the needle electrode and the location effect of output terminal beneath the disk sensors.

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Detection Characteristics of a Novel Coupler for GIS PD Detection

  • Park, Jae-Gu;Yi, Sang-Hwa;Kim, Kwang-Hwa;Kim, Ik-Soo;Kim, Jae-Chul
    • KIEE International Transactions on Electrophysics and Applications
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    • 제3C권6호
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    • pp.224-229
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    • 2003
  • An ultra high frequency (UHF) coupler possessing ultra wide band (UWB) characteristics ranging from hundreds of MHz to several GHz is desirable for the detection of the partial discharge (PD) pulses because the pulses propagate with rise time shorter than one nanosecond in a gas-insulated substation (GIS). Thus, the authors have proposed a log-periodic antenna for GIS PD detection. Various parameters of the coupler such as frequency bandwidth, coupler gain, radiation pattern, and coupler geometry were considered throughout the simulations. The experiments for the detection characteristics of the coupler were carried out in the mock-up GIS chamber. The results indicated that the detection characteristics of the coupler are dependent on the installation angle of the coupler, the position of the coupler in the hand hole and the existence of the spacer.

가스절연기기에서 외장형 PD 센서를 이용한 부분방전 검출 (Detection of Partial Discharge in $SF_6$ Gas-insulated Switchgear Using External UHF PD sensors)

  • 이창용;홍철용;최병화;윤자홍;남극채;정재기
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2004년도 춘계학술대회 논문집 전기설비전문위원
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    • pp.125-127
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    • 2004
  • We have developed the external-type PD sensors for detecting of the ultra high frequency (UHF) signals in various type of GIS. Sufficiently high sensitivity and accuracy for practical use were achieved for the PD sensor. The experience at the fields and the criteria for the judgment are also discussed in detail.

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주입식 UHF PD 센서를 이용한 유입식 변압기 진단 기술 연구 (A study on the oil transformer diagnostic technology using injection type UHF PD sensor)

  • 강원종;이창준;강윤식;박종배;이희철;박종화
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2004년도 하계학술대회 논문집 C
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    • pp.1891-1893
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    • 2004
  • 이 논무에서는 유입식 변압를 대상으로 UHF 대역의 펄스신호를 검출하는 센서를 소개하고, 이를 이용한 방전 결함별 측정 결과를 소개한다. 측정결과는 기존의 PRPD법과 주파수 Domain과 위상 Domain에 대한 정보를 가지는 p-f-q 분석으로 측정 하였으며, 본 논문에서는 후자의 결과를 중심으로 서술 하였다.

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UHF PD 센서를 이용한 배전기기 상태감시장치 개발 (The Development of the Condition Monitoring Equipment for distribution Facilities by using the UHF Partial Discharge Sensors)

  • 조용준;황철민;김영노;최재옥;송일근;이병성
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2008년도 제39회 하계학술대회
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    • pp.406-407
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    • 2008
  • This paper is analyzed the internal type UHF partial Discharge sensors and Condition Monitoring Module that be able to monitor the condition of the distribution facilities. It set the PD cell on the inside of 22.9kV load switchgear and then it executed Partial Discharge test. it introduced the result of the test.

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GIS 스페이서의 에폭시 주입구 장착형 UHF PD 센서의 성능 비교 (A comparison of the characteristics of External type UHF partial discharge sensor for metal covered barriers in GIS)

  • 황철민;김영노;이영상;곽주식;박기준
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 제36회 하계학술대회 논문집 C
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    • pp.2265-2267
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    • 2005
  • We present detailed studies of externally applicable UHF PD sensors for a metal covered epoxy barrier with a small opening of epoxy injection-hole. The sensors were attached at the surface of injection hole of a metal covered epoxy barrier. 3-Dimensional electro magnetic simulations were performed to analyze electric-field distribution of the GIS and epoxy barrier with injection hole. Sensor structures were designed and analyzed using the 3-D EM simulator then fabricated for experimental verification. Sensor performance was measured in terms of spectral response and detected peak power. Real scale GIS and epoxy barriers were used to test and measure various aspect of performance of the sensors.

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초고주파 광대역 부분방전 센서를 내장한 지능형 스페이서 개발 (A development of intelligent spacer built in the Internal type UHF partial discharge sensor)

  • 김동석;황철민;김영노;최재옥;서왕벽;한봉수;최수헌
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2007년도 Techno-Fair 및 추계학술대회 논문집 전기물성,응용부문
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    • pp.163-164
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    • 2007
  • In this study, we developed intelligent spacer built in the internal type UHF PD sensors. 3-Dimensional electro-magnetic simulations were performed to analyze electric-field distribution of the single-phase GIS and three-phase GIS. After considering the spacer's specification, Sensor structures were designed and analyzed using the 3-D EM Simulator. As a result of the simulation the internal type UHF PD sensors were built in. Performance of the sensor built into real scale GIS spacer was measured in terms of return loss and detected Max voltage. And we identified a character of the intelligent spacer by using 5pC partial discharge ceil.

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UHF법 부분방전 진단기법에 의한 가스절연 개폐장치의 성능검증 (Performance Verification of Gas Insulated Switchgear using UHF Partial Discharge Diagnosis Method)

  • 김정배;박경수;송원표;김덕수;김종화
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2002년도 추계학술대회 논문집 전기물성,응용부문
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    • pp.37-39
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    • 2002
  • UHF method is very effective to diagnosis for partial discharge of GIS. In generally, inner UHF sensor can be attached on sheath cover of GIS under construction for periodic inspection. However, there is no inner UHF sensor for GIS of the domestic substation. We used the outer UHF sensor attached on spacer for GIS of existing substation. In this paper, we report the diagnosis result of partial discharge on 800kV GIS in domestic substation. From these results, we can find the quantity, reason and location of PD and certificate the performance of UHF method for partial discharge diagnosis of GIS.

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GIS에서 UHF 부분방전 검출법의 교정방안 연구 (The Study of The Calibration Method for The UHF PD Detection in GIS)

  • 이우영;정진교;최영길
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1999년도 하계학술대회 논문집 E
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    • pp.2290-2292
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    • 1999
  • The Ultra-High Frequency(UHF) method for detecting a partial discharge in Gas-Insulated Substation(GIS) has some advantages compared to a conventional method(IEC 270) but there is a shortage in view of a quantitative analysis. Therefore, this paper describes the implementation of a calibrator and the calibration process based on it. And its characteristics are confirmed through the experiment using the 362kV GIS chamber.

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