考虑电网总风险和检修收益的设备状态检修计划优化

摘要

在状态检修背景下，由于处于某一状态的设备的检修等级有多种选择，不同检修等级对设备检修时间、设备检修费用以及设备状态的改善程度等因素都会产生不同的影响，从而影响设备检修时间的安排。因此，将检修方式和检修时间同时作为制定检修计划的决策变量。利用风险评估的方法，给出了电网运行总风险和设备检修收益的定义及求解。考虑到单一风险指标对最终决策的不全面性，并针对电网运行总风险、设备检修收益单个优化目标对检修后设备的可靠性及检修的经济性的不同影响程度，建立考虑电网运行总风险和设备检修收益联合优化模型，并与以电网运行总风险、设备检修收益为优化目标所得结果进行对比，分析各检修方案对检修的可靠性和经济性的不同影响。通过算例验证了该方法的合理性。%In the background of condition-based maintenance, the equipment in a certain state could choose different maintenance levels, which have different impacts on maintenance time, maintenance costs and the improvement of equipment state, which will in turn affect the time schedule of equipment maintenance. Therefore, both the maintenance mode and the maintenance time are viewed as decision variables of making maintenance schedules. Based on the method of risk assessment, the overall risk of grid operation and the revenue of equipment maintenance are defined. Furthermore, since the single risk indicator for the final decision is not comprehensive. And the maintenance results of single optimization model have different impacts on the economy of equipment maintenance and the reliability of equipment after maintenance. Therefore a joint optimization model integrating the overall risk of grid operation and the revenue of equipment maintenance is established. Then the three maintenance schedules are compared to analyze the maintenance effects on equipment reliability and economy. The result of application verifies the validity of the method.