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Fault location of transformer winding deformation using frequency response analysis

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3 Author(s)
Jin Zhijian ; Electr. Power Sch., Shanghai Jiao Tong Univ., China ; Zhu Minglin ; Zhu Zishu

FRA (frequency response analysis) is the best effective method that can successfully detect transformer winding deformation. This paper tries to diagnose the fault by the winding's physical parameter changes. At frequencies lower than critical frequency, the transformer winding may be modeled as a lossless transmission line that the series capacitance could be easily neglected. The parameters of inductance and grounding capacitance may be determined respectively. Any change in these parameters then should reflect the probable position of transformer winding deformation

Published in:

Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on

Date of Conference: