A contribution on the traceability of partial discharge measurements

Author

Osváth, P. ; Carminati, E. ; Gandelli, A.

Author_Institution

Tettex Instrum. AG, Dietikon-Zurich, Switzerland

Volume

27

Issue

1

fYear

1992

fDate

2/1/1992 12:00:00 AM

Firstpage

130

Lastpage

134

Abstract

Commercially used partial discharge (PD) detectors are intended to capture current pulses generated by PD activity in the insulation of a HV test object and then to integrate it, producing a display proportional to the apparent charge. The integration procedure is approximated by a low pass (or bandpass) filter and therefore different partial detectors display different charges on the same measurement setup. The error of the approximated integration is simulated and analyzed, and a new calibrator is proposed which has an adjustable duration current pulse. Using the calibrator, the correct working range of the PD detector can be tested and thus qualified. The new calibrator, as a reference unit, can be considered a base of traceability of PD measurement

Keywords

calibration; charge measurement; insulation testing; measurement errors; partial discharges; HV insulation; PD detector; adjustable duration current pulse; bandpass filter; calibrator; current pulses; integration error; integration procedure; low pass filter; partial discharge measurements; reference unit; traceability; Current measurement; Detectors; Displays; Filters; Frequency; IEC standards; Instruments; Partial discharge measurement; Partial discharges; Testing;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.123448

Filename

123448