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为了保障同相供电系统工程化的可靠性和经济性,研究了电气化铁路组合式同相供电装置的维修决策建模及优化问题.首先,根据装置构建方案和运行模式,分析了新型组合式同相供电装置的可靠性;其次,通过装备维修性及劣化性能分析,提出了一种基于Markov过程的维修决策模型及基于最优维修策略的迭代算法;最后,以维修费用最低为目标,综合考虑系统的状态转移概率、维修时间等因素,通过模型计算了状态维修的最佳时机.算例显示,若将系统劣化状态由优到劣分为6类,根据每类状态的维修时间及费用,可以计算出在第5类劣化状态时进行维修具有最高的经济性,仅为定期更换维修费用的50%.
In order to ensure the engineering reliability and economy of the same phase power supply system, the maintenance decision modeling and optimization of the electrified railway combined phase in-phase power supply are studied.At first, according to the device construction scheme and operation mode, the new combined phase-in power supply Secondly, through the equipment maintenance and deterioration analysis, a maintenance decision-making model based on Markov process and an iterative algorithm based on the optimal maintenance strategy are proposed. Finally, taking the maintenance cost as the goal, the system’s state The transition probability, the maintenance time and other factors, the optimal time of state maintenance is calculated through the model.Examples show that if the system degradation state is divided into 6 categories according to the superior and inferior conditions, the maintenance time and cost of each state can be calculated Performing repairs in a Category 5 degraded state is the most economical, with only 50% of the cost of repairs routinely replaced.