磁通约束型超导限流开关系统应用

doi:10.19595/j.cnki.1000-6753.tces.171471

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Abstract With the development of society and economy, the demand for electricity is increasing, and the scale of the power system is further expanded, resulting in the continuous increase of the short-circuit current level and exceeding the interrupting capacity of the existing breaker. The flux-coupling superconducting fault current limiting switch (FC-SFCLS) is a device with fast response speed and can effectively suppress short circuit current. For the specific application scenario of a 10kV transmission system, the parameters of the current limiting switch are selected and the corresponding control strategy is proposed. Then, the preliminary electromagnetic design of the superconducting coupled inductor coils is performed. However, the introduction of current limiting breaker may affect the performance of original relay protections of power system. Thus, the influence of current limiting impedance on distance protection performance is analyzed, and the improvement measures are then put forward. Finally, a 10kV power system model integrated with the current limiting breaker is built in Matlab/Simulink. The results show that the introduction of flux-coupling fault current limiting breaker can effectively reduce the fault current level, but it will shorten the protection range of original distance protection devices. The influence can be eliminated by adopting a reasonable revision method.

Key words： Flux-coupling superconducting fault current limiting switch (FC-SFCLS) parameter selection electromagnetic design distance protection revision method

Received: 26 October 2017 Published: 27 November 2018

PACS:	TM26
	TM77

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	Articles by authors
	Zhang Lihui
	Shi Jing
	Yan Sinian
	Ren Li
	Tang Yuejin

Cite this article:

Zhang Lihui,Shi Jing,Yan Sinian等. System Application of Flux-Coupling Superconducting Fault Current Limiting Switch[J]. Transactions of China Electrotechnical Society, 2018, 33(22): 5292-5299.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.171471 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I22/5292

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