基于费用最小的铁路牵引变电所维修计划优化模型

Optimization Model of Least-cost-based Maintenance Schedules for Railway Traction Substations

合理优化牵引变电所维修计划是电气化铁路稳定、高效运营的重要保障。本文在分析牵引变电所结构与设备可靠性基础上,建立以可靠性为约束条件的维修费用最小维修计划优化模型。考虑到牵引变电所系统构成的复杂性,进一步设计基于单个设备维修计划优化的启发式求解算法流程,提出基于可靠性分析的牵引变电所维修计划调整方法。本文还以电气化铁路牵引变电所的实际调研数据为基础开展案例研究,验证所构建模型与求解算法的有效性与实用性。

Optimization of maintenance schedules for traction substations guarantees reliable and efficient operation of electrical railways.The optimization model of reliability-constrained maintenance schedules with the least maintenance costs is established through analysis of the reliability of the structures and individual components of traction substations.Considering the complexity of the structures of traction substation systems,the individual-component-based heuristic algorithm for solving the proposed model is developed,and the method for adjustment of maintenance schedules for the traction substations is devised on the basis of reliability evaluation.Case studies from field data are implemented to verify the validity and practicability of the propose methods.