控制棒驱动机构备件数量优化方法

控制棒驱动机构是反应堆控制和保护系统的伺服机构，是执行反应堆功率调节、紧急停堆的重要核安全设备。控制棒驱动机构成本较高，如何合理确定其备件数量对于提高反应堆的可运行性具有重要意义。本文针对控制棒驱动机构，在系统连续运转时间不小于换料周期的约束条件下，提出了一种确定控制棒驱动机构备件数量的优化方法--分组备件数量优化方法，给出了总费用最少的各子系统的备件配置方案。通过随机模拟计算对分组备件数量优化方法与常规算法进行比较，结果表明：该方法常优于常规算法，在保证控制棒驱动机构可用性的前提下，优化备件数量配置可降低成本。该优化方法同样适用于其他设备的备件分析，对工程中设备备件的分析与研究具有指导意义。

Optimization Method for Spare Part Quantity of Control Rod Drive Mechanism

The control rod drive mechanism is the servo mechanism of the reactor control and protection system. It is an important nuclear safety equipment for performing reactor power regulation and emergency shutdown. The cost of the control rod drive mechanism is high, and how to determine the number of spare parts is important for improving the operability of the reactor. In this paper, for the control rod drive mechanism, under the constraint condition that the continuous operation time of the system is not less than the refueling cycle, an optimization method for determining the number of spare parts for the control rod drive mechanism, the optimization method of grouping spare parts quantity, was proposed. And the spare parts configuration scheme of each subsystem with the least total cost was given. By the stochastic simulation calculation, the method of optimizing the number of spare parts was compared with the conventional algorithm. The results show that the optimization method is better than the conventional algorithm. Under the premise of ensuring the availability of the control rod drive mechanism, optimizing the number of spare parts can reduce the cost. The optimization method is also applicable to the analysis of spare parts of other equipment, and has guiding significance for the analysis and research of equipment spare parts in engineering.