New techniques for monitoring the insulation quality of in-service HV apparatus

Author

Allan, D. ; Blundell, M. ; Boyd, K. ; Hinde, D.

Volume

27

Issue

3

fYear

1992

fDate

6/1/1992 12:00:00 AM

Firstpage

578

Lastpage

585

Abstract

New online monitoring techniques have been developed for use on HV systems. An online testing device was developed to measure partial discharge and dielectric loss angle (DLA) of in-service HV instrument transformers and is used as a fast screening device. A continuous DLA monitor for in-service transformer bushings and current transformers has also been developed and installed at a 132 kV substation. These techniques considerably enhance HV plant maintenance programs and have a significant impact on future plant monitoring strategies

Keywords

current transformers; dielectric measurement; high-voltage engineering; instrument transformers; insulation testing; loss-angle measurement; partial discharges; transformer insulation; transformer substations; transformer testing; 132 kV; HV instrument transformers; current transformers; dielectric loss angle; fast screening device; in-service HV apparatus; insulation quality; online monitoring techniques; online testing device; partial discharge; plant maintenance programs; transformer bushings; Current transformers; Dielectric loss measurement; Dielectric measurements; Dielectrics and electrical insulation; Instrument transformers; Loss measurement; Monitoring; Partial discharge measurement; Power transformer insulation; Testing;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.142722

Filename

142722