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http://dx.doi.org/10.4313/JKEM.2007.20.10.895

Analysis and lest of On-line and off-line PD Testing for High Voltage Rotating Machines Stator Windings using Ceramic Coupler  

Oh, Bong-Keun (한국수자원공사 수자원연구원)
Kim, Hyun-Il (한국수자원공사 수자원연구원)
Kang, Seong-Hwa (충청대학 소방안전과)
Lim, Kee-Joe (충북대학교 전기전자컴퓨터공학부)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.20, no.10, 2007 , pp. 895-900 More about this Journal
Abstract
Partial discharge(PD) test can be performed either when the rotating machine is not operating(off-line) or during normal machine operation(on-line). This paper presents an on-line and off-line PD test on a large hydro-generator and induction motor using the same PD acquisition system(PDAS) and ceramic coupler(CC) sensor. PD signal characteristics of CC sensor proved similar with that of epoxy mica coupler(EMC) sensor as a results of PD test for simulated defect winding and frequency response test. A comparison of on-line and off-line PD test for PD characteristic parameters-phase resolved PD(PRPD), maximum PD value(Qmax) and PD occurrence energy(POE)-indicated that on-line PD test could reliably and effectively diagnose insulation conditions which were verified by off-line PD test.
Keywords
PD; On-line PD test; Off-line PD test; Rotating machine; Insulation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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