Title :
Location of partial discharge source on distribution line by measuring emitted pulse-train electromagnetic waves
Author :
Tungkanawanich, A. ; Kawasaki, Z.-I. ; Abe, J. ; Matsuura, K.
Author_Institution :
Graduate Sch. of Electr. Eng., Osaka Univ., Japan
Abstract :
This paper presents a new system designed for detecting the pulse-train electromagnetic waves emitted from partial discharge. The authors utilize a VHF wideband antenna array as electromagnetic sensors and calculate the time delay between them in order to locate partial discharge in 3 dimensions. The standard cross correlation and smoothed coherence transform are used and compared to estimate the time delay. The time delay is then statistically calculated from a lot of pulses in one time of detection. The proposed system shows the effectiveness in the detection and location of partial discharge, and enhances the reliability of a method. A field experiment is performed to approach the concept of this method
Keywords :
delay estimation; electromagnetic waves; fault location; partial discharges; power distribution faults; power distribution lines; transforms; VHF wideband antenna array; cross correlation; electromagnetic sensors; partial discharge source location; power distribution line; reliability; smoothed coherence transform; time delay; Coherence; Delay effects; Delay estimation; EMP radiation effects; Electromagnetic measurements; Electromagnetic scattering; Partial discharge measurement; Partial discharges; Power system reliability; Pulse measurements;
Conference_Titel :
Power Engineering Society Winter Meeting, 2000. IEEE
Print_ISBN :
0-7803-5935-6
DOI :
10.1109/PESW.2000.847194
