Title :
Reliability of station class surge arresters
Author_Institution :
Manitoba Hydro, Winnipeg, Man., Canada
Abstract :
Power transformers installed in the 1960s and 1970s were protected by surge arresters with gaps and silicon carbide valve elements. Many of these arresters are still in service but the population is declining. By 1980, gapless zinc oxide arresters were being installed in all new installations. There are two reliability issues involving surge arresters: adequacy of protection and consequential damage resulting from in-service failure.
Keywords :
arresters; power transformer protection; reliability; SiC; SiC arresters; ZnO; ZnO arresters; gapless zinc oxide arresters; in-service failure damage; lightning related failures; reliability issues; station class surge arresters reliability; transformer faults; transformers protection; Arresters; Impulse testing; Loss measurement; Partial discharge measurement; Partial discharges; Power transformers; Pulse transformers; Silicon carbide; Surge protection; Zinc oxide;
Conference_Titel :
Electrical Insulation, 2002. Conference Record of the 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7337-5
DOI :
10.1109/ELINSL.2002.995941
