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.
许志伟, 罗隆福, 张志文, 李勇, 李永坚, 黄肇. 一种新型电气化铁道电能质量综合补偿[J]. 电工技术学报, 2015, 30(8): 265-272.
Xu Zhiwei, Luo Longfu, Zhang Zhiwen, Li Yong, Li Yongjian, Huang Zhao. A Novel Power Quality Integrated Compensator for Electrified Railway. Transactions of China Electrotechnical Society, 2015, 30(8): 265-272.
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2015, Vol. 30 
