The analysis of on-site noise in on-line partial discharge monitoring

Author

Ning, Gao ; Fuqi, Li ; Wensheng, Gao ; Kexiong, Tan

Author_Institution

Tsinghua Univ., Beijing, China

Volume

2

fYear

2000

fDate

2000

Firstpage

1065

Abstract

The methods of on-site electromagnetic noise suppression are key techniques for on-line partial discharge measurement in transformers based on the pulse current methods. It is difficult to analyze because of the complexity of noise sources and the sensitivity of different measured positions. In this paper, the on-line noise of a 500 kV transformer is measured and the characteristics of the noise are analyzed in detail, which includes their sensitivities in different measurement positions, the characteristics of transient signals caused by the thyristor, the influence of the noise caused by the low voltage power source to the measuring signal, and so on. It is helpful for obtaining the true characteristics of different noise and presenting the effective noise suppression method

Keywords

electron device noise; insulation testing; partial discharge measurement; power transformer insulation; power transformer testing; thyristors; 500 kV; effective noise suppression; low voltage power source; noise sources; on-line partial discharge monitoring; on-site electromagnetic noise suppression; on-site noise; pulse current method; sensitivity; thyristor; transformers; transient signals; EMP radiation effects; Electromagnetic interference; Electromagnetic measurements; Noise measurement; Partial discharge measurement; Partial discharges; Position measurement; Power measurement; Pulse measurements; Transformers;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on

Conference_Location

Xi´an

Print_ISBN

0-7803-5459-1

Type

conf

DOI

10.1109/ICPADM.2000.876417

Filename

876417