Insulation fault monitoring of power transformer by transfer function method

Author

Yuting, Qi ; Xuechang, Yang

Author_Institution

Tsinghua Univ., Beijing, China

Volume

1

fYear

2001

fDate

2001

Firstpage

297

Abstract

A transfer function method is being developed for both the impulse test and monitoring of power transformers. A three-phase equivalent circuit of power transformer based on the Bergeron method is created in this paper. The influences of input signals with different frequency characteristics on transfer function calculation are analyzed and a suitable input is selected to perform the evaluation of transformers´ insulation conditions by transfer function method. Three different types of transformer faults are simulated in this paper. The results show the potential contributions to insulation fault monitoring and location

Keywords

equivalent circuits; fault diagnosis; impulse testing; insulation testing; monitoring; power transformer insulation; power transformer testing; transfer functions; Bergeron method; frequency characteristics; insulation fault location; power transformer insulation fault monitoring; three-phase equivalent circuit; transfer function calculation; transfer function method; transformer impulse test; Circuit faults; Circuit testing; Equivalent circuits; Frequency; Impulse testing; Monitoring; Power transformer insulation; Power transformers; Signal analysis; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on

Conference_Location

Shenyang

Print_ISBN

7-5062-5115-9

Type

conf

DOI

10.1109/ICEMS.2001.970671

Filename

970671