Title :
Field location of partial discharge in power cables using an adaptive noise mitigating system
Author :
Hariri, Ali ; Du, Zhifang ; Sui, Dong ; Mashikian, Matthew S. ; Jordan, David
Author_Institution :
Electr. Insulation Res. Center, Connecticut Univ., Storrs, CT, USA
Abstract :
The digitized partial discharge (PD) signal recorded at one power cable end consists of a sequence of pulses whose separation time contains information on the relative location of the PD sites. However, noisy PD signals can lead to a large PD site estimation error. The most annoying noise encountered during PD measurements consists primarily of amplitude modulated (AM) radio signals. The performance and the resolution of the wide band PD detection system are critically affected by this noise. This paper describes an adaptive noise mitigating system (ANMS) which is aimed at effectively reducing this noise
Keywords :
automatic testing; electric breakdown; fault location; insulation testing; interference suppression; measurement errors; partial discharges; power cable insulation; power cable testing; radiofrequency interference; AM radio signals; PD site estimation error; adaptive noise mitigating system; digitized measurement signals; insulation breakdown tests; noisy PD signals; partial discharge location; power cables; pulses whose separation time; test automation; wide band PD detection system; Amplitude modulation; Estimation error; Noise level; Noise measurement; Noise reduction; Partial discharge measurement; Partial discharges; Power cables; Signal resolution; Wideband;
Conference_Titel :
Electrical Insulation, 1996., Conference Record of the 1996 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-3531-7
DOI :
10.1109/ELINSL.1996.549298
