Title :
Diagnostics of surge arresters using high voltage gradient ZnO elements for the 800 kV GIS by UHF partial discharge methods
Author :
Shirakawa, S. ; Tanaka, S. ; Yamada, S. ; Watahiki, S. ; Kondo, S. ; Kato, T. ; Son, W.-P.
Author_Institution :
Hitachi Ltd., Ibaraki, Japan
Abstract :
It is important to perform partial discharge tests in order to evaluate the soundness of the insulation parts of surge arresters. Normally, surge arresters have been evaluated by ERA methods in factory tests. In this case, newly developed surge arresters for the 800 kV GIS using high voltage gradient ZnO elements have been diagnosed by UHF partial discharge methods. This paper describes test results of surge arresters for the 800 kV GIS by partial discharge tests
Keywords :
arresters; 800 kV; ERA methods; GIS; SF6; SF6 insulation; UHF partial discharge methods; ZnO; high voltage gradient ZnO elements; surge arresters diagnostics;
Conference_Titel :
High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)
Conference_Location :
London
Print_ISBN :
0-85296-719-5
DOI :
10.1049/cp:19990903
