具备电压补偿功能的不停电过分相系统及控制方法

doi:10.19595/j.cnki.1000-6753.tces.200098

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Abstract The uninterrupted phase-separation passing system can ensure the continuous power supply of locomotive without speed reduction and voltage and current impact. In order to further improve the reliability of the uninterrupted phase-separation passing system and the voltage fluctuation at the end of the traction power supply network, a uninterrupted power transfer system (UPT) based on three-phase MMC and its control strategy are proposed. Firstly, the UPT topology and working principle of the phase separation zone based on three-phase MMC are studied; secondly, the voltage fluctuation principle at the end of traction network caused by locomotive passing through the neutral section and the reactive voltage compensation ability of UPT are analyzed. Then, during the whole process of locomotive passing through the neutral section, the current transmission characteristics of UPT are proposed to ensure the linear change of active load on both sides. Next, the active and reactive power of UPT and the overall control strategy are proposed. Finally, simulation analysis and small capacity experiment are carried out. The theoretical analysis and test results show that the UPT can ensure that the locomotive can smoothly pass through the neutral section without power failure, and the load of traction power supply arms on both sides can realize linear and stable change, and effectively solve the problem of voltage fluctuation.

Key words： High-speed railway neutral section uninterrupted phase-separation passing voltage fluctuation current absorption from two arms

Received: 04 February 2020

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TM922.3

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	Yuan Jiaxin
	Ni Zhou
	Xiao Feiran
	Min Yongzhi

Cite this article:

Yuan Jiaxin,Ni Zhou,Xiao Feiran等. Study on the Control Method and the Uninterrupted Phase-Separation Passing System with Voltage Compensation Function[J]. Transactions of China Electrotechnical Society, 2021, 36(5): 1084-1095.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.200098 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I5/1084

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