Title :
Application of high voltage gradient zinc oxide elements to SF6 gas insulated surge arresters for 22 kV-765 kV power systems
Author :
Shirakawa, S. ; Ejiri, I. ; Watahiki, S. ; Iimura, N. ; Nakano, S. ; Yamada, S. ; Kondo, S.
Author_Institution :
Hitachi Ltd., Japan
fDate :
4/1/1999 12:00:00 AM
Abstract :
Zinc oxide elements have been developed for the surge arrester elements. Basically, these zinc oxide elements are evaluated by the reference voltage VNmA. Newly developed high voltage gradient zinc oxide elements have about twice value VNmA/mm of normal zinc oxide elements. This paper describes the application of the high voltage gradient zinc oxide elements to SF6 gas insulated tank type surge arresters for 22 kV-765 kV power systems
Keywords :
SF6 insulation; arresters; power system protection; zinc compounds; 22 to 765 kV; SF6; SF6 gas insulated surge arresters; ZnO; high voltage gradient zinc oxide elements; power systems; reference voltage; surge arrester elements; tank type surge arresters; Arresters; Circuit testing; Gas insulation; Geographic Information Systems; IEC standards; Sulfur hexafluoride; Surge protection; Switchgear; Voltage; Zinc oxide;
Journal_Title :
Power Delivery, IEEE Transactions on
