牵引供电系统维修计划优化与仿真

牵引供电系统维修计划的制定需要兼顾运行的可靠性和维修的经济性。应用一种可靠性分析方法—Go法对某高速铁路牵引供电系统的可靠性进行了分析，推导了系统可靠度的定量计算公式。考虑到牵引供电系统众多电气设备之间维修的经济相关性和预防性维修的不完备性，建立了以系统可靠度为约束条件、维修费用最小为优化目标的有限时间区间牵引供电系统维修计划优化模型，基于一种改进的离散粒子群算法设计了仿真程序，具有良好的收敛性。仿真结果验证了模型的客观有效性，可以应用于牵引供电系统维修计划的制定。

Optimization and Simulation for Maintenance Scheduling of Traction Power Supply System

The maintenance scheduling of a traction power supply system should give consideration to both system reliability and maintenance economy. In this paper, the method to analyze system reliability, namely GO methodo-logy, is applied to the reliability assessment of the traction power supply system of a high-speed railway, and a quantitative calculation equation of system reliability is deduced. Then, by considering the economic dependency among the maintenance of various electrical equipments and the imperfectness of preventive maintenance, an optimal model of maintenance plan to satisfy the reliability constraints is proposed to minimize the maintenance cost in a finite time interval. The corresponding simulation program with good convergence is also presented based on an improved discrete particle swarm optimization algorithm. Simulated results indicate that the proposed model is objective and effective and is suitable for scheduling the maintenance plan of traction power supply systems.