Title :
Technique to examine the influence of voltage harmonics on leakage current based MOSA diagnostic indicator
Author :
Fernando, S.N. ; Raghuveer, M.R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man., Canada
Abstract :
The degradation of Metal Oxide Surge Arresters (MOSA) in service is diagnosed by using the third harmonic content of the resistive portion of the arrester leakage current as an indicator. The third harmonic content consists of two components, i.e., a component due to the nonlinear volt-ampere characteristics of the MOSA and an error component due to the presence of voltage harmonics. In order to assess the discerning ability of an on-site diagnostic method to the error component its indicator has to be compared with that of a benchmark method. This paper discusses such a method
Keywords :
arresters; harmonics; leakage currents; MOSA diagnostic indicator; benchmark method; error component; leakage current; metal oxide surge arrester; nonlinear volt-ampere characteristics; on-site method; voltage harmonic; Aging; Arresters; Current measurement; Degradation; Harmonic analysis; Leakage current; Shape; Surge protection; Valves; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-6413-9
DOI :
10.1109/CEIDP.2000.884030
