Novel method for noise rejection during PD measurements in combination with pulse-width-modulation amplifiers

authored by

A. Kaindl, S. Nowak, T. Koschnitzki, H. Borsi

Abstract

This paper describes a new method to avoid the noise influence on partial discharge (PD) measurements upon using pulse-width modulation (PWM) amplifiers. This is achieved by a special PD test set-up, where the test object, a coil with high inductivity, and a capacitance are put together to form a series resonance circuit. Energy is only applied to the measurement circuit by the PWM amplifier during a short period of time (e.g., between 0 and 90° phase angle). To avoid the noise generated by the PWM amplifier, the PD measurement is only carried out during its switch-off period. With this measurement set-up, it was possible to measure the PD behavior of the test object under high voltage as well as under high current conditions. By this, a new method was found to conduct PD measurements of coils with high inductivity and high capacitance under operation conditions.

Organisation(s)

High Voltage Engineering and Asset Management Section (Schering Institute)

External Organisation(s)

Siemens AG

Type

Conference article

Journal

Conference Record of IEEE International Symposium on Electrical Insulation

Volume

2

Pages

448-451

No. of pages

4

ISSN

0164-2006

Publication date

1998

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Electrical and Electronic Engineering, Building and Construction