Development of advanced arresters for GIS with new zinc-oxide elements

Author

Shichimiya, S. ; Yamaguchi, M. ; Furuse, N. ; Kobayashi, M. ; Ishibe, S.

Author_Institution

Mitsubishi Electr. Corp., Amagasaki, Japan

Volume

13

Issue

2

fYear

1998

fDate

4/1/1998 12:00:00 AM

Firstpage

465

Lastpage

471

Abstract

New zinc-oxide elements with a varistor voltage about twice that of conventional ones of the same thickness have been developed by reducing the ZnO grain size with a new additive, which enable a halving of the series number of elements in metal oxide surge arresters. The advanced arresters with these elements for GIS are compact by 40 to 60% in volume compared with conventional ones. The electrical and mechanical performance of the advanced arresters was found to be satisfactory through various evaluation tests such as thermal stability tests, residual voltage tests, seismic tests and long-term stability tests

Keywords

arresters; gas insulated switchgear; grain size; power system protection; switchgear testing; zinc compounds; 66 to 500 kV; GIS; ZnO; ZnO varistors; electrical performance; evaluation tests; grain size; long-term stability tests; mechanical performance; metal oxide surge arresters; residual voltage tests; seismic tests; thermal stability tests; Arresters; Geographic Information Systems; Grain size; Microstructure; Surge protection; Testing; Thermal stability; Varistors; Voltage; Zinc oxide;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.660916

Filename

660916