一种新型电气化铁道电能质量综合补偿

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Abstract To compensate amount of harmonics, negative sequence current and reactive power generated by single-phase traction load which is varied in random and fluctuant, a novel integrated compensator based on multi-purpose balance transformer, which contains a two-phase port and a three-phase port in the secondary, is proposed in this paper. The compensator consists of a three-phase voltage source converter(VSC) and two multi-groups thyristor switched capacitor(TSC). TSC is used to compensate the most reactive power. VSC is connected to the three-phase port through the filter inductor to compensate the harmonics, negative and the remaining reactive currents. So the capacity of VSC is reduced and good for engineering realization. Firstly, the operation principle of the system is clarified. Then the reactive current distribution method is designed and the compensation algorithm based on balanced mmf using virtual current is deduced. Furthermore, the compensation equivalent circuit mode is established, the reference current detecting and the collaborative control strategy for TSC and VSC based on reactive power current abruption VSC are presented. Simulation and experimental results show the validity of the proposed system.

Key words： Multi-purpose balance transformer three-phase voltage converter electrified railway integrated compensation thyristor switched capacitor

Received: 25 April 2013 Published: 25 May 2015

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	Articles by authors
	Xu Zhiwei
	Luo Longfu
	Zhang Zhiwen
	Li Yong
	Li Yongjian
	Huang Zhao

Cite this article:

Xu Zhiwei,Luo Longfu,Zhang Zhiwen等. A Novel Power Quality Integrated Compensator for Electrified Railway[J]. Transactions of China Electrotechnical Society, 2015, 30(8): 265-272.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I8/265

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