KIEE - The Transactions of the Korean Institute of Electrical Engineers

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The Transactions of the Korean Institute of Electrical Engineers

The Transactions of the Korean Institute of Electrical Engineers

ISO Journal TitleTrans. Korean. Inst. Elect. Eng.

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Title	Analysis of Leakage Current Waveforms for Transmission Line Porcelain Insulators due to ESDD Contamination
Authors	박재준(Park, Jae-Jun)
DOI	https://doi.org/10.5370/KIEE.2012.61.10.1461
Page	pp.1461-1470
ISSN	1975-8359
Keywords	Transmission line porcelain insulators ; ESDD ; Contamination ; Leakage current ; Surface resistance
Abstract	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.

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