Analysis on transformer balance winding fault of an aircooled power plant and treatment

Abstract

Abstract:

Abstract:The function of transformer balance winding was introduced. An infrequent short circuit fault of transformer balance winding was introduced. The transformer is installed in an aircooled power plant and connected in mode of Yyn0+d, and the short circuit fault of its balance winding had caused the differential protection to trip. A new fast method was adopted for transformation and calculation of first and second currents of the transformer. The fault position can be determined correctly by the new method, which provides a base for the fault treatment.

Key words: Key words:transformer, balance winding, differential protection, simplified analysis on short circuit fault

LI Zecai, CHENG Zhongyue, LI Xirong, PAN Lehong, YUAN Lancheng. Analysis on transformer balance winding fault of an aircooled power plant and treatment[J]. Huadian Technology, 2013, 35(7): 53-55.

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Analysis on transformer balance winding fault of an aircooled power plant and treatment

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