Analytical method for evaluating surface charge distribution on a dielectric from capacitive probe measurement-application to a cone-type spacer in ±500 kV DC-GIS

Author

Ootera, H. ; Nakanishi, K.

Author_Institution

Mitsubishi Electr. Corp., Hyogo, Japan

Volume

3

Issue

1

fYear

1988

fDate

1/1/1988 12:00:00 AM

Firstpage

165

Lastpage

172

Abstract

The measurement of surface charging on a spacer in a ±500-kV HVDC gas-insulated switchgear (GIS) is performed by a capacitive probe set inside the gas tank. The various factors that cause measurement errors are examined using a simple model. An analytical method to correct the measurement errors and transform the probe output into the charge distribution on the surface of the spacer is developed. The method is an extension of a numerical method for 3-D surface charge calculation. It is shown that the charge distributions from the probe measurement agree fairly well with dust figures

Keywords

gaseous insulation; sulphur compounds; switchgear; 3-D surface charge calculation; 500 kV; SF₆; capacitive probe measurement; charge distributions; cone-type spacer; dielectric; gas tank; surface charge distribution; surface charging; Charge measurement; Current measurement; Gas insulation; Geographic Information Systems; HVDC transmission; Measurement errors; Performance evaluation; Probes; Surface charging; Switchgear;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.4242

Filename

4242