基于模型辨识的配电线路永久性故障判定方法

doi:10.19595/j.cnki.1000-6753.tces.180242

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Abstract In order to improve the success rate of automatic reclosing of distribution lines, a method for detecting the interphase faults of distribution lines is proposed. A controlled inverter source, which is connected to the low-voltage side of the service transformer, applies an instantaneous high voltage to the de-energized line to break down the possible fault points. Frequency responses of the de-energized line can be obtained based on generated transient voltage and current. By analyzing the frequency domain characteristics of the de-energized line for different fault properties, the internal structure of the de-energized line is identified and the fault property is determined with model recognition principle. Therefore, the decision whether to reclose the circuit breaker can be made confidently. This method can not only be used for adaptive reclosing of distribution lines but also for power recovery after a period of power failure. Theoretical calculation, simulation and experiment have all proved the effectiveness of this method.

Key words： Distribution network model recognition fault property inverter source

Received: 27 February 2018 Published: 21 March 2019

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TM774

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	Ding Peng
	Zhu Ke
	Zhu Yuqing
	Luan Yueyi

Cite this article:

Ding Peng,Zhu Ke,Zhu Yuqing等. Determining the Permanent Fault in Distribution Lines Based on Model Recognition[J]. Transactions of China Electrotechnical Society, 2019, 34(5): 1004-1012.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.180242 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I5/1004

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