A continuous parameter high frequency model based on travelling waves for transformer diagnostic purposes

authored by

Asghar Akbari, Peter Werle, H. Borsi, Ernst Gockenbach

Abstract

In this contribution a new continuous parameter model for power transformers, which is based on the travelling wave theory is suggested. In this modeling approach a small partial length along the winding is considered and a continuous circuit model is used to describe the Partial Differential Equation (PDE) of the coil structure. This equation determines the characteristics of the voltage wave propagation along the winding. The experimental procedure of the PDE parameter optimization using measurements, which have been performed in the laboratory, is presented. The suggested model has been used to calculate the sectional winding transfer functions, which are required for a PD localization. Furthermore the results of a PD evaluation on a distribution transformer based on the new suggested model are illustrated.

Organisation(s)

High Voltage Engineering and Asset Management Section (Schering Institute)

External Organisation(s)

K.N. Toosi University of Technology

Type

Article

Journal

Conference Record of IEEE International Symposium on Electrical Insulation

Pages

154-157

No. of pages

4

ISSN

0164-2006

Publication date

2002

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Building and Construction, Electrical and Electronic Engineering

Electronic version(s)

https://doi.org/10.1109/ELINSL.2002.995901 (Access: Unknown)