针对核电厂反应堆功率控制系统连续运行时间长、可靠性和安全性要求高的特点,提出了一种全新的基于双CPU冗余、电源冗余和ControlNet现场总线网络冗余控制的实现方案,对原有的反应堆功率模拟控制系统进行数字化改造设计,实现反应堆功率的可靠控制.通过对系统的主要可靠性指标进行定量计算和分析,评估了系统的可靠性和可用性.%In order to meet the requirements of the long-time continuous operation, reliability and security of the reactor power control system in nuclear power plant, this paper presents a novel strategy based on the dual redundancies of CPU, power supply and ControlNet field-bus network. Digital modification de-sign is used to replace the traditional analog control system in reactor power to perform reliable control. The system reliability and availability are assessed by calculating and analyzing the main reliability param-eters quantitatively.
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