Research on Combined Co-Phase Power Supply Equipment Maintenance Decision Modeling and Optimization Based on Markov Process

摘要

For power supply breakpoint caused by power phase separation in traction power supply system of power frequency AC system, it is one of the important problems restricting the transport capacity and speed improvement. Thanks to the implementation of co-phase power supply, traction substation can save the exit phase separation, which will help improve the technical speed of train operation, enhance the rail capacity and achieve a very significant efficiency. This paper proposed a structure of electrified railway combined co-phase power supply equipment delved into its state maintenance decision modeling and optimization, and helped work best for operation reliability and economic efficiency. Based on results of example analysis, reasonable maintenance strategy was made as per the state transfer probability, maintenance time, cost and other factors. In this way, the maintenance cost within the life circle can be reduced, which provides an important theoretical and practical significance.