Development of a 500 kV transmission line arrester and its characteristics

Author

Ishida, K. ; Dokai, K. ; Tsozaki, T. ; Irie, T. ; Nakayama, T. ; Fujita, H. ; Arakawa, K. ; Aihara, Y.

Author_Institution

Kansai Electric Power Co. Inc., Osaka, Japan

Volume

7

Issue

3

fYear

1992

fDate

7/1/1992 12:00:00 AM

Firstpage

1265

Lastpage

1274

Abstract

A 275 kV gapped type arrester was developed and tested on an EHV transmission line which is liable to be extensively affected once a line fault occurs. The study was followed by the development of a 500 kV gapped type arrester, and its field test on an existing line was started in September 1990. The main characteristics of the 500 kV gapped type arrester are discussed, and evidence to corroborate its applicability to 500 kV transmission lines is presented. The series gap length was reduced by adopting an optimal electrode configuration and a reasonable concurrence probability of the arrester unit and a switching impulse, in order to design the practicable gapped type arrester for existing 500 kV transmission towers. It was demonstrated that the 500 kV gapped type arrester can be depended upon to cut off the follow current even when it is contaminated. Satisfactory insulation coordination with the existing insulator assemblies was demonstrated

Keywords

power transmission lines; surge protection; 500 kV; concurrence probability; gapped type arrester; insulation coordination; line fault; optimal electrode configuration; series gap length; transmission line arrester; Arresters; Counting circuits; Insulation; Lightning; Poles and towers; Power transmission lines; Surges; Testing; Transmission lines; Zinc oxide;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.141840

Filename

141840