Grounding insulation fault monitoring of power transformers using Bergeron´s method

Author

Qiang, E. ; Xuechang, Yang

Author_Institution

Tsinghua Univ., Beijing, China

Volume

3

fYear

2002

fDate

28-31 Oct. 2002

Firstpage

1865

Abstract

Transfer function analysis is being developed for both impulse testing and monitoring of power transformers and offers advantages of fault identification and location. Based on Bergeron´s method, a three-phase circuit equivalent to a power transformer is introduced in this paper. Sliding grounding insulation faults found at different locations in the winding are analyzed and simulated. The results reveal that changes in the transfer function help locate the fault and show the potential contribution to insulation fault monitoring and location.

Keywords

earthing; electrical faults; fault location; impulse testing; insulation testing; power transformer insulation; power transformer testing; transfer functions; 110 kV; 20 MVA; Bergeron´s method; equivalent circuits; fault identification; fault location; grounding insulation fault monitoring; impulse testing; insulation fault analysis; power transformers; sliding grounding insulation faults; transfer function analysis; Analytical models; Circuit faults; Circuit simulation; Fault diagnosis; Grounding; Impulse testing; Monitoring; Power transformer insulation; Power transformers; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering

Print_ISBN

0-7803-7490-8

Type

conf

DOI

10.1109/TENCON.2002.1182700

Filename

1182700