Research on reliability of metro power supply system based on network resource sharing
Subway is one of the important parts of urban public transportation,and the importance of subway safety is self-evi-dent.At present,all lines of the Beijing subway network use 10kV distributed power supply and double-loop network connection,but there are individual 10 kV external power supplies in Beijing subway can not be put into the situation,resulting in a single line 10 kV switch between the mutual support ability is insufficient,once the line failure,it may bring serious economic and social impact.Therefore,this paper takes the distributed power supply system of line 6 and Line 2 as an example to establish a medium voltage ring network support power supply system from the perspective of inter-network support power supply without reducing the number of traf-fic.Based on the transformer capacity selection,voltage constraint,current constraint and operation mode of the medium voltage ring network system,the bus voltage drop and incoming line current are taken as indicators.Evaluate the reliability of subway network support power supply system under different operating conditions,and realize network operation and resource sharing of power supply system.
support power supplypower supply systemnetwork operationresource sharing
万方数据
维普
