Analysis of Leakage Current Waveforms for Transmission Line Porcelain Insulators due to ESDD Contamination

ESDD 오손에 따른 송전용자기애자의 누설전류 파형의 분석

  • 박재준 (중부대학교 전기전자공학과)
  • Received : 2012.08.19
  • Accepted : 2012.09.03
  • Published : 2012.10.01


This paper reports the contamination performance of transmission line porcelain insulators tested under five different contaminant conditions - clean and ESDD (equivalent salt deposit density) level (A, B, C, and D) through measurement of their leakage current under drop of potential method. To estimate the contamination for transmission line porcelain insulators, leakage current waveform and its maximum value were measured under step-up power test. In the clean insulators test, % distortion factors decreased with increasing step-up power, and as the ESDD level increased, some characteristics such as frequency analysis, harmonics and % distortion facotor could be used for contamination diagnosis of the transmission line porcelain insulators.


Transmission line porcelain insulators;ESDD;Contamination;Leakage current;Surface resistance


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