基于光伏电源支撑的多端口固态变压器故障穿越策略

doi:10.19595/j.cnki.1000-6753.tces.190929

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Abstract Reclosing is an effective measure to improve the reliability of distribution network. The multi-port solid-state transformer (SST) integrated with power electronics is significantly affected by the control strategy, and the operating mechanism of SST is unclear during the reclosing of the distribution network. Therefore, this paper studies the operating characteristics of SST under the reclosing mechanism. It is pointed out that if a certain control strategy is not adopted, SST may have impulse current in the face of reclosing. Accordingly, this paper proposes an impulse current suppression strategy for the SST with photovoltaic (PV) power generation to improve the operational capabilities. Firstly, this paper analyzes the topology and control strategy of SST as well as the mechanism of SST impulse current during reclosing. Secondly, according to different initial working conditions and the maximum allowable current of the input stage, the power compensation range of the PV power generation is obtained, and the impulse current suppression strategy is proposed. Finally, simulation and experiment verify the correctness and effectiveness of the theoretical analysis and proposed strategy.

Key words： Solid state transformer automatic reclosing impulse current photovoltaic power generation

Received: 25 July 2019

PACS:	TM41
	TM921.5

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	Tu Chunming
	Ge Qin
	Xiao Fan
	Chen Jiangxing
	Fang Ni

Cite this article:

Tu Chunming,Ge Qin,Xiao Fan等. Fault Ride-Through Control Strategy of Solid State Transformer with PV Power Generation[J]. Transactions of China Electrotechnical Society, 2020, 35(16): 3498-3508.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.190929 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I16/3498

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