A novel, compact instrument for the measurement and evaluation of relaxation currents conceived for on-site diagnosis of electric power apparatus

Author

Alff, Jean-Jacques ; Houhanessian, Vahe Der ; Zaengl, Walter S. ; Kachler, Adolf J.

Author_Institution

Presco AG, Weiningen, Switzerland

fYear

2000

fDate

2000

Firstpage

161

Lastpage

167

Abstract

Ageing of insulation materials and systems may well be detected by quantitative measurements of their dielectric response. Such measurements can be performed in the frequency or time domain. In this contribution, a novel type of equipment based on relaxation current measurements is introduced which is designed for on-site tests of high voltage power apparatus. The introduction outlines the reasons for the development. Then, the technique of the instrument is briefly explained. Finally, some examples of on-site measurements on power transformers are presented and post-processing and interpretation of the results is demonstrated

Keywords

ageing; dielectric measurement; dielectric relaxation; electric current measurement; insulation testing; power transformer insulation; power transformer testing; ageing; compact instrument; dielectric response; high voltage power apparatus; insulation material; on-site diagnosis; power transformer; relaxation current measurement; Aging; Current measurement; Dielectric materials; Dielectric measurements; Dielectrics and electrical insulation; Frequency measurement; Instruments; Performance evaluation; Testing; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2000. Conference Record of the 2000 IEEE International Symposium on

Conference_Location

Anaheim, CA

ISSN

1089-084X

Print_ISBN

0-7803-5931-3

Type

conf

DOI

10.1109/ELINSL.2000.845480

Filename

845480