Monitoring and diagnostic systems for dry type transformers

authored by

Ernst Gockenbach, Peter Werle, H. Borsi

Abstract

A cost effective and efficient system to monitor online local overheating of dry type transformers using fibre optic sensor technology was discussed. An offline analysis of the transfer function gave indications on interturn short circuits. The sensitivity in the range of a few percent of the whole number of windings enabled reduced maintenance and repair costs. The measurement of the absolute value of the signals as well as the difference between two adjacent sensors led to a detection sensitivity in the range of 20 pC even under noisy conditions.

Organisation(s)

High Voltage Engineering and Asset Management Section (Schering Institute)

Type

Paper

Pages

291-294

No. of pages

4

Publication date

2001

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Electrical and Electronic Engineering