IDENTIFICATION OF TRANSFORMER INRUSH CURRENT USING MORPHOLOGICAL SIGNAL DECOMPOSITION |
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作者姓名: | H. Wu P. Sun D. J. Zhang J. F. Zhang |
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作者单位: | (Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool L69 3GJ, UK) |
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摘 要: | Based on Mathematical Morphology (MM), this paper presents a new method for discrimination between internal fault and magnetising inrush conditions for power transformer protection. The proposed algorithm is to decompose the signal with a class of morphologically simple function, known as Blum functions, to allow the unique feature associated with the inrush current waveform to be preserved, while suppressing other irrelevant features. The proposed scheme has been applied to simulated signals generated by PSCAD/EMTDC. The results confirm that features extracted by the MM filtering have a distinctive property, on which simple identification criteria can be applied for detecting an inrush current from internal fault conditions.
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关 键 词: | mathematical morphology power transformer protection inrush current |
收稿时间: | 1/1/1900 12:00:00 AM |
修稿时间: | 1/1/1900 12:00:00 AM |
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