Investigation of PD pulse propagation characteristics in GIS

Author

Mizuno, X. ; Ogawa, Anna ; Nojima, K. ; Murase, H. ; Koyama, H. ; Wakabayashi, S. ; Sakakibara, T.

Author_Institution

Chubu Electric Power Co. Inc., Nagoya, Japan

Volume

12

Issue

2

fYear

1997

fDate

5/1/1997 12:00:00 AM

Firstpage

1022

Lastpage

1030

Abstract

Concentrating on the TEM mode, the damping characteristics of partial discharge (PD) pulses propagating through each gas-insulated switchgear (GIS) component were investigated. As a result, it was discovered that frequency components above 500 MHz were remarkably damped by spacers, T-shape branches, and L-bends. Quantitative studies were undertaken on the frequency dependency of these damping characteristics. Then the equivalent circuits for analyzing the propagation characteristic of PD pulses were proposed. Furthermore, the validity of concentrating on the TEM mode was denoted by tests at a substation in service

Keywords

damping; electric breakdown; equivalent circuits; gas insulated switchgear; insulation testing; partial discharges; switchgear testing; L-bends; T-shape branches; damping characteristics; dielectric breakdown tests; equivalent circuits; frequency components; gas-insulated switchgear; partial discharges; pulse propagation characteristics; spacers; Circuit analysis; Circuit testing; Damping; Equivalent circuits; Frequency; Gas insulation; Geographic Information Systems; Partial discharges; Pulse circuits; Switchgear;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.589815

Filename

589815