可靠性理论在城市轨道交通供电系统中压环网分区设计中的应用

定性分析已难以满足城市轨道交通中压环网分区方案精细化设计要求,必须以定量分析作为评价或研究的基础。根据可靠性理论,采用马尔可夫状态空间法、最小路集法建立了城市轨道交通中压环网分区模型,结合具体工程对中压环网分区方案与车站变电所可靠性进行了定量分析。建议在前期设计时,应采用可靠性理论对年平均停运时间进行评估,以确定兼顾经济性和可靠性的中压环网分区方案。

Reliability Theory Applied in the Design of Medium Voltage Network Ring Partition in Urban Rail Power Supply System

Qualitative analysis could not meet the require-ments in the design of medium voltage ring network parti-tion (MVRNP),so quantitative analysis should be used as the basis of evaluation and research.According to the relia-bility theory,Markov State Space method and the mini-mum path set method are used to establish a MVRNP mod-el,a specific engineering for MVRNP scheme is combined with the substation reliability quantitative analysis at metro station.In the early stage of the design,reliability theory should be adopted for MVRNP scheme analysis and evalua-tion to determine both the economy and reliability of MVRNP scheme.