Title :
Digital discharge location in HV cables with the travelling wave system
Author :
Gulski, E. ; Samuel, A.R. ; Kehl, L. ; Geene, H.T.F.
Author_Institution :
Delft Univ. of Technol., Netherlands
Abstract :
Partial discharges are the main cause of breakdown in insulation materials. Therefore location of partial discharges is important for the quality control of HV cables. This paper discusses the noise and disturbances affecting PD measurements and presents some digital filter techniques to suppress these disturbances. Three of them have been implemented in PDLOC, a commercialized digital system for the location of PD in HV cables. Test results show that disturbances up to five times as large as the second PD pulse can be successfully suppressed. The maximum location error with use of filters is in the same order as without filtering
Keywords :
automatic test equipment; automatic testing; digital filters; electric breakdown; insulation testing; partial discharges; power cable insulation; power cable testing; quality control; signal processing; HV cables; commercialized digital system; digital filter techniques; gas-filled cavities; insulation breakdown tests; maximum location error; measurement noise; partial discharge location; quality control; test automation; travelling wave system; Cables; Commercialization; Digital filters; Digital systems; Electric breakdown; Fault location; Insulation; Noise measurement; Partial discharges; Quality control;
Conference_Titel :
Electrical Insulation, 1996., Conference Record of the 1996 IEEE International Symposium on
Print_ISBN :
0-7803-3531-7
DOI :
10.1109/ELINSL.1996.549299
