Title :
Grounding insulation fault monitoring of power transformers using Bergeron´s method
Author :
Qiang, E. ; Xuechang, Yang
Author_Institution :
Tsinghua Univ., Beijing, China
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;
Conference_Titel :
TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering
Print_ISBN :
0-7803-7490-8
DOI :
10.1109/TENCON.2002.1182700
