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A Study on the Deterioration Progress of Railway Arresters  

길경석 (한국해양대학교 전기전자공학부)
한주섭 (한국해양대학교 전기전자공학부)
한문섭 (한국철도기술연구원 전력계통그룹)
Publication Information
Journal of the Korean Society for Railway / v.7, no.4, 2004 , pp. 307-311 More about this Journal
Abstract
Arresters are the best protective device on electrical power systems against transient overvoltages generated by lightning and/or switching operation. Nonetheless, arresters are deteriorated by absorption of moisture in the environments of its use, repetition in the protective operation to overvoltages, and some defects at manufacturing. It is therefore important to estimate the electrical characteristic changes of ZnO blocks. In this paper, an accelerated ageing test by a standard lightning impulse current was carried out to extract parameters needed for arrester diagnosis, and leakage current components were measured. Total energy applied to the ZnO blocks at each time is about 1,050[J] in 8/20[${\mu}\textrm{s}$] impulse current. From the experimental results, we proposed electrical parameters and leakage current level to diagnose arrester soundness.
Keywords
Railway Arrester; Leakage Current; Impulse Current; Deterioration Progress; Arrester Soundness;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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