The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Comparate Study for the PD Pattern Analysis using Different Type of Sensors Applicable to the On-line Monitoring of GIS

GIS 감시진단용 다양한 센서를 적용한 PD 검출 및 패턴분석 결과 비교연구

  • 구자윤 (한양대학교 공대 전기공학과) ;
  • 장용무 (한양대학교 퓨전전기기술응용 연구센터) ;
  • 최재옥 ((주)PSD Tech 연구소) ;
  • 연만승 (LS 산전 전력시스템) ;
  • 이지철 (한양대학교 공대 전자전기제어계측공학과)
  • Published : 2005.05.01
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Abstract

Many precedent investigations hate been made for the reliable assessment of the insulation state of large power apparatus for which partial discharge detection is one of tile plausible way. In this work, experimental investigations have been carried out to make the comparison on the PD(partial discharge) pattern analysis related to the five different types of artificial defects such as SFMP (Single Free Moving Particle), MFMP (Multi Free Moving Particle), Void, CFP (Conductor-Fixed Protrusion), EP (Enclosure Protrusion). For each PD pattern, PD detection has been done by tee different types of PD sensors such as HFCT(High Frequency Current Transformer), AE(Acoustic Emission) and UHF(Ultra High Frequency). And, in addition, frequency spectrum by the UHF sensor has been also made for each defect respectively. As a result, it is observed that the possibility of obtaining PD pattern based on PRPD(Phase Resolved Partial Discharge) in connection with the defects tinder investigation is dependant on the type of the sensor while the spectrum analysis is always successful to be achieved for every defect. Therefore, it could be suggested that the nature of PD source can be identified more distinctively when the conventional PRPDA is combined with spectrum analysis.

Keywords

References

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