Time domain PD-detection vs. dielectric spectroscopy

Author

Holbøll, J.T. ; Gäfvert, U. ; Edin, H.

Author_Institution

Dept. of Electr. Power Eng., Tech. Univ., Lyngby, Denmark

Volume

2

fYear

1997

fDate

19-22, Oct 1997

Firstpage

498

Abstract

A theoretically developed relationship between partial discharges and the response from a system for dielectric spectroscopy was experimentally confirmed. The losses caused by the discharges were highest at test voltages with low frequencies. At 0.1 Hz, tanδ tip-up at discharge inception was very difficult to observe. A very clear tip-up could be seen by detection of the third harmonic in the current through the test object. This is much more sensitive to the detection of internal partial discharges than traditional loss measurements, in particular when using low frequency test voltages

Keywords

charge measurement; dielectric loss measurement; insulation testing; partial discharges; time-domain analysis; 0.1 Hz; current third harmonic; dielectric spectroscopy; discharge inception; insulation diagnostic tools; internal partial discharges; losses; low frequency test voltages; tanδ tip-up; time domain PD-detection; Capacitance; Dielectric losses; Dielectric measurements; Dielectrics and electrical insulation; Electrochemical impedance spectroscopy; Electrodes; Frequency; Partial discharges; Power engineering and energy; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1997. IEEE 1997 Annual Report., Conference on

Conference_Location

Minneapolis, MN

Print_ISBN

0-7803-3851-0

Type

conf

DOI

10.1109/CEIDP.1997.641120

Filename

641120