Title :
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
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;
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
DOI :
10.1109/ICPADM.2000.876417
