RF-Based Partial Discharge Early Warning System for Air-Insulated Substations

Author

Portugués, Iliana E. ; Moore, Philip J. ; Glover, Ian A. ; Johnstone, Carl ; McKosky, Ralph H. ; Goff, Mark B. ; Van Der Zel, Luke

Author_Institution

Elimpus Ltd., Bellshill

Volume

24

Issue

1

fYear

2009

Firstpage

20

Lastpage

29

Abstract

Partial discharges (PDs) generate wideband radio-frequency interference which can be used for noninvasive monitoring of discharges. This paper presents a novel method based on this principle for PD monitoring of substations. The significant advantage of this method lies in the ability to detect PD sources in energized equipment anywhere within a substation compound during normal operating conditions. The results obtained from the prototypes installed in the U.K. and U.S. substations are reported. Results include correlation with apparent charge and daily recordings obtained before, during, and after the failure of a 132-kV current transformer and 69-kV voltage transformer.

Keywords

monitoring; partial discharges; power transformers; substations; RF-based partial discharge early warning system; air-insulated substations; current transformer; noninvasive monitoring; voltage 132 kV; voltage 69 kV; voltage transformer; Alarm systems; Current transformers; Fault location; Partial discharges; Prototypes; Radio frequency; Radiofrequency interference; Substations; Voltage transformers; Wideband; Apparent charge; condition monitoring; impulsive noise; location; partial discharge; radiometric monitoring;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2008.2005464

Filename

4729811