Title :
Insulation fault monitoring of power transformer by transfer function method
Author :
Yuting, Qi ; Xuechang, Yang
Author_Institution :
Tsinghua Univ., Beijing, China
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;
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
DOI :
10.1109/ICEMS.2001.970671
