A Study for the Fault Location of Insulation Defects considering Waveguide Characteristics in GIS

GIS의 도파관 특성을 고려한 절연결함 위치판정에 관한 연구

  • 이승철 (한양대 공대 전자전기제어계측과) ;
  • 정승용 (한양대 공대 전자전기제어계측과) ;
  • 이재호 (한양대 공대 전자전기제어계측과) ;
  • 구자윤 (한양대 공대 전자전기제어계측과)
  • Published : 2008.02.01

Abstract

A study for discharge pattern analysis partial and fault location by use of UHF sensors in GIS. However, in the latter case, the results considered the velocity of EM waves modified by the waveguide characteristics of GIS bus bar were not reported yet. In this paper, UHF wide band sensor to detect partial discharge signals have been designed and manufactured to get the widest band characteristic by an application of Fat-Dipole UHF antenna and the result that the transmission velocity of EM waves is 2/3 of the light have been got through the consideration of waveguide characteristics. Also, to verify applicability on site of the developed method, self-designed external type UHF sensor have been installed on operating GIS in Korea Midland Power co. and detected location of the fault. Through the fault have been found at the location, the reliability of the developed method have been proved.

Keywords

References

  1. H.Maekawa T.Masui H-Inujima N. Miyamoto, "Partial Discharge Locating System for GIS", IEE 2nd International Conference on Advances in Power System Control, p159-163, 1993
  2. Kwang-Hwa Kim, Sang-Hwa Yi, Jae-Gu Choi, "PROPAGATION CHARACTERISTICS OF GIS PD SIGNALS BY UWB PD DETECTION SYSTEM USING DUAL UHF BAND METHOD", IEEE, Power Modulator Symposium, 2004 and 2004 High-Voltage Workshop. Conference Record of the Twenty-Sixth International, p454-457, 2004
  3. Xin Li, Chengrong Li, Lijian Ding, Jing Yang, Hailiang Li, "Improvement of PD location in GIs", IEEE, 2004 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, P418-421, 2004
  4. Deltv Gross and Markus Soeller "Partial Discharge Monitering and Breakdown Location on GIS Equipment" Draft, Paper1.19,submitted to ETG 'Diagonostik Elektrischer Betribsmittel', Berlin, February 26-27, 2002
  5. 황철민, 구자윤, 박기준, 구선근, 윤진열, 이영상, "GIS용 외장형 광대역 극초단파 부분방전 센서의 구조에 따른 특성 비교", 2004년도 대한전기학회 하계학술대회 논문집 2004.7.14-16
  6. 황철민, 구자윤, 이영상, 윤진열, "Gas Insulated Switchgear(GIS) 내부 부분방전 측정을 위한 Barrier coupler-type UHF센서 개발에 관한 연구", 2003년도 대한전기학회 하계학술대회 논문집 2003.7.21-23
  7. 윤진열, "GIS 부분방전 검출기술 연구", 한국전력공사 전력 연구원, p13, 2002.10