Multi-Function Uninterrupted Phase-Separation Passing System and its Control Method
作者机构：the School of Electrical Engineering and AutomationWuhan UniversityWuhan 430072China the School of Electrical EngineeringNaval University of EngineeringWuhan 430030China the State Grid Jinan Power Supply CompanyJinan 250061China the Department of Electrical and Electronic EngineeringLanzhou Jiaotong UniversityLanzhou 730070China
出 版 物：《CSEE Journal of Power and Energy Systems》 (中国电机工程学会电力与能源系统学报（英文）)
年 卷 期：2023年第9卷第6期
页 面：2332-2343页
核心收录：
学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 080802[工学-电力系统及其自动化] 08[工学]
基 金：the National Natural ScienceFoundation of China (U2166207 52207182) China Postdoctoral ScienceFoundation (2023M732690).
主 题：Control strategy high-speed railway MUPPS neutral section
摘 要：At present, sudden load changes and terminal voltage fluctuations are two primary problems in the uninterrupted phase-separation passing (UPP) system. To further enhance the reliability of the UPP system and compensate for the voltage sag at the end of the traction power supply network caused by the suddenly connection of locomotive to the power grid, a multi-function uninterrupted phase-separation passing system (MUPPS) and its control strategy are proposed. It has the advantages of linear load change and improving power supply reliability. First, the topology and working principles of a MUPPS are studied;secondly, the current variation characteristics of the bridge arm when the power is continuously supplied by MUPPS during the phase-separation passing are analyzed. Then, the characteristics of a MUPPS to provide reactive power and stabilize the terminal voltage of the traction arm are analyzed. Then, the power transmission characteristics of a MUPPS under emergency working conditions are analyzed. The control strategy for the two conditions is proposed. Finally, simulation analysis and small capacity experiments are conducted. The theoretical analysis and test confirm the correctness and effectiveness of the MUPPS.
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