TEM- and TE-mode waves excited by partial discharges in GIS

Author

Zhang, M.C. ; Li, H.

Author_Institution

Xi´´an Jiaotong Univ., China

Volume

5

fYear

1999

fDate

1999

Firstpage

144

Abstract

The possibility of using information from the TEM- and TE-modes for the detection and location of partial discharges has been investigated. The propagation and attenuation of the E and H components of the different modes excited radially by a line current in a coaxial cylinder is described. To give the verification of it, experiments have been performed with simulated partial discharge currents injected radially in a GIS test facility. It is shown that: both the TEM-mode and TE₁₁-mode are excited by partial discharges in GIS; an inductive sensor allows the TEM-mode to be distinguished from the TE-mode; and the discharge location can be determined by employing different propagation velocities of the TEM- and TE₁₁-modes

Keywords

gas insulated substations; E component attenuation; E component propagation; GIS; GIS test facility; H component attenuation; H component propagation; TE-mode waves excitation; TE₁₁-mode; TEM-mode waves excitation; coaxial cylinder; gas insulated substations; inductive sensor; injected PD currents; line current; partial discharges detection; partial discharges location; propagation velocities; simulated partial discharge currents;

fLanguage

English

Publisher

iet

Conference_Titel

High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)

Conference_Location

London

ISSN

0537-9989

Print_ISBN

0-85296-719-5

Type

conf

DOI

10.1049/cp:19990906

Filename

818258