Application of digital filters for on-site partial discharge detection on high voltage cables

Author

Schichler, U. ; Borsi, H. ; Gockenbach, E.

Author_Institution

Schering-Inst. of High Voltage Tech. & Eng., Hannover Univ., Germany

Volume

2

fYear

1994

fDate

3-8 Jul 1994

Firstpage

618

Abstract

There are a lot of problems for a sensitive on-site partial discharge (PD) detection on high voltage cables caused by ambient noises. The PD pulses are often superposed by various noise signals which have different characteristics in the time and frequency domain. For a sensitive on-site PD detection these disturbances have to be reduced or separated. A suitable solution of this problem can be achieved by the application of digital filters. A specially tuned digital LMS-filter which is for the first time applied for noise suppression in PD detection on high voltage cables is described. The LMS-filter works in the time domain and suppresses continuous noise signals

Keywords

charge measurement; digital filters; insulation testing; interference (signal); interference suppression; least mean squares methods; partial discharges; polyethylene insulation; power cable insulation; power cable testing; signal detection; continuous noise signals suppression; digital filters; frequency domain; high voltage cables; noise signals; noise suppression; on-site partial discharge detection; polyethylene insulated cables; time domain; tuned digital LMS-filter; Cables; Digital filters; Frequency domain analysis; High-voltage techniques; Instruments; Noise shaping; Partial discharges; Pulse shaping methods; Testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1994., Proceedings of the 4th International Conference on

Conference_Location

Brisbane, Qld.

Print_ISBN

0-7803-1307-0

Type

conf

DOI

10.1109/ICPADM.1994.414086

Filename

414086