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A wavelet transform based scheme for power transformer inrush identification

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3 Author(s)
Xianguing Liu ; Dept. of Electr. Power Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China ; Pei Liu ; Shijie Cheng

A new scheme for transformer inrush identification is proposed in this paper. The new scheme is based on the wavelet packet transform algorithm. The main advantage of the proposed scheme is that different kinds of inrush of the transformers can be correctly identified from different types of the internal faults of the transformers. Also, the external fault of the transformers can also be identified from the internal fault with the proposed scheme. Test results with the sampled data from a prototype device on a dynamic power system model verify the effectiveness of the proposed scheme. Furthermore, another advantage of thus algorithm is that it can be realized in real time applications

Published in:

Power Engineering Society Winter Meeting, 2000. IEEE  (Volume:3 )

Date of Conference:

23-27 Jan 2000