基于分层优化的分散式城轨供电系统网络化支援供电

doi:10.19595/j.cnki.1000-6753.tces.200473

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摘要在不同地铁线路之间可相互共享外部电源的背景下,为研究网络化支援供电方式对分散式城轨供电系统故障恢复的影响,该文建立网络化运营模式下的分散式城轨供电系统拓扑模型和支援供电故障恢复数学模型。采用分层优化方法,先基于拓扑搜索生成开关操作次数最少的候选方案集,再基于潮流计算找出中压系统附加损耗最小的可行方案。以五条线路的供电系统为分析实例,结果表明：一个电源开闭所退出且失电区域含换乘站时,60%的故障下,跨线支援供电在保证调度快速的同时,提高了城轨供电系统故障恢复后的运行经济性。相邻两个电源开闭所同时退出且失电区域含换乘站时,26.7%的故障下,通过跨线支援供电方可恢复全部一、二级负荷,提高了城市轨道交通的供电可靠性。

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关键词 ：分散式城轨供电系统, 网络化支援供电, 故障恢复, 分层优化

Abstract：Under the background that different subway lines can share external power sources, in order to study the impact of networked support power supply on failure restoration of distributed urban rail power supply systems, this paper establishes the topological model ofdistributedurban rail power supply system and the mathematical model to support power supply failure restoration under the networked operation mode. The hierarchical optimization method was adopted. A candidate scheme set with the least number of switching operations is generated by topology search, and a feasible scheme with the least additional loss in the medium voltage system was found by power flow calculation. Taking the power supply system of 5 lines as an analysis example, the results show that when a switching station exits and the power loss area includes transfer stations, in 60% of the failure cases, the cross-line support power supply ensures fast dispatching and improvesthe operation economy of the urban rail power supply system after failure restoration.When two adjacent switching stations exit at the same time and the power loss area includestransfer stations, in26.7% of the failarecases, all the primary and secondary loadscan be recovered bythe cross-line support power supply, which improves the power supply reliability of urban rail transit.

Key words： Distributed urban rail power supply systems networked support power supply failure restoration hierarchical optimization

收稿日期: 2020-05-09

PACS:

U223.1

基金资助:国家自然科学基金资助项目（51607148）

通讯作者: 刘炜,男,1982年生,副教授,博士生导师,研究方向为城轨供电系统设计仿真,再生制动能量利用,杂散电流。E-mail：liuwei_8208@swjtu.cn

作者简介: 谢文君,女,1997年生,硕士研究生,研究方向为城轨供电系统网络化运营。E-mail：1978003147@qq.com

引用本文:

刘炜, 谢文君, 孙名刚, 张丽, 赵佳微. 基于分层优化的分散式城轨供电系统网络化支援供电[J]. 电工技术学报, 2021, 36(11): 2306-2314. Liu Wei, Xie Wenjun, Sun Minggang, Zhang Li, Zhao Jiawei. Research on Networked Support Power Supply of Urban Rail Power Supply System Based on Hierarchical Optimization. Transactions of China Electrotechnical Society, 2021, 36(11): 2306-2314.

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