郑州轨道交通全网供电系统与城市电网的融合模式研究

Integrating Power Supply System of Zhengzhou Urban Transit into State Grid

针对城市轨道交通供电系统与城市电网的关系,结合一些城市轨道交通供电系统的建设实践个案,提出轨道交通全网供电系统应该与城市电网充分融合的观点,而融合的方式可分为110 kV、35 kV和10 kV三个层面。同时,结合郑州城市电网的特点和轨道交通供电系统的现状,从必要性、技术层面对融合进行研究,提出10 kV融合模式和110 kV融合模式,并对两种模式进行实施分析,对不同模式下存在的技术问题进行研究。在此基础上,总结融合的优点,并对郑州市如何推进融合提出实施策略:以集中供电融合为主,加快推进分散融合。

Based on case studies,a novel point of view about the connection between the Urban Transit Power Supply System(UTPSS)and State Grid is presented.The UTPSS and State Grid should be mutually shared on three levels:110 kV,35 kV,and 10 kV.The necessity and technology of mutual sharing is discussed for the case in Zhengzhou based on the present situation.Two modes are proposed and analyzed:10-kV sharing mode and 110-kV sharing mode.Technological problems under each mode are analyzed and solved.Finally,the advantages of mutual sharing are summarized.Suggestions are provided for the Zhengzhou case,starting from the 110-kV sharing mode and expanding toward the 10-kV sharing mode.