三阶段电流转移混合型无弧直流断路器

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Abstract In order to solve the switching problem in HVDC circuits,a novel topology structure of arc-less DC breaker is proposed.High-speed mechanical switches generates strong reversal voltage at the moment of disconnecting phase and additional charging is needed for the pre-charging capacitor.To avoid the limitation of the traditional hybrid breaks,we proposed the three-stage current commutation design.We also developed the equivalent mathematical model of the topology structure to analyze the critical commutation moments of several working-phases to obtain the correctness proof.The results show that the new DC breaker ensures arc-less disconnection of mechanical switches and speed up the disconnection.

Key words： Arc-less DC breaker topology structure hybrid circuit breaker three stage current commutation break time

Received: 15 March 2016 Published: 20 June 2017

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TM561

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	Articles by authors
	Zhang Guojun
	Song Feifan
	Li Shaoming
	Dai Guoyin

Cite this article:

Zhang Guojun,Song Feifan,Li Shaoming等. Hybrid Arc-Less DC Circuit Breaker Based on Three Stage Current Commutation[J]. Transactions of China Electrotechnical Society, 2017, 32(11): 87-95.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I11/87

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