Title :
New techniques for monitoring the insulation quality of in-service HV apparatus
Author :
Allan, D. ; Blundell, M. ; Boyd, K. ; Hinde, D.
fDate :
6/1/1992 12:00:00 AM
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;
Journal_Title :
Electrical Insulation, IEEE Transactions on
