Operational experience on HVDC and HVAC insulators at Sylmar Converter Station

Author

Fong, Fleur

Author_Institution

Dept. of Water & Power, Sylmar Converter Station, Los Angeles, CA, USA

fYear

2002

fDate

7-10 Apr 2002

Firstpage

216

Lastpage

219

Abstract

Sylmar Converter Station (SCS) personnel have used two methods to prevent insulator flashovers. The most widely used method was to coat the HVDC insulators with a room temperature vulcanized (RTV) silicone coating. Once the coating was applied, no further maintenance work was done. The second less widely used method at SCS was to install composite insulators consisting of silicone rubber sheds attached to a fiberglass core. Since silicone rubber sheds are water repellent, this property eliminates the need for another surface coating. This paper examines the operational performance of using both methods at SCS to prevent flashovers.

Keywords

HVDC power convertors; bushings; composite insulators; flashover; insulating coatings; insulator contamination; silicone insulation; silicone rubber insulators; substations; 400 kV; 500 kV; AC current transformers; HVAC insulators; HVDC insulators; RTV silicone coating; Sylmar Converter Station; composite insulators; contamination; fiberglass core; flashovers prevention; hybrid-optical measuring system; hydrophobicity; room temperature vulcanized silicone coating; silicone rubber material; silicone rubber sheds; wall bushings; water repellent sheds; Coatings; Flashover; HVDC transmission; Insulation; Personnel; Protection; Rubber; Temperature; Valves; Water pollution;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2002. Conference Record of the 2002 IEEE International Symposium on

Print_ISBN

0-7803-7337-5

Type

conf

DOI

10.1109/ELINSL.2002.995916

Filename

995916