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某CPR1000核电项目采用三菱MELTAC-N plus R3平台的定期试验系统(Automatic Tester)完成反应堆保护系统T2及T3定期试验,该平台及设备是首次应用于CPR1000核电机组,其设计理念完全不同于参考电站[1],本文通过深入研究定期试验系统的工作原理、通讯模式、设计理念,基于预期的机组工况分析并发现五类(十余项)定期试验系统存在的设计问题并逐一进行改进研究。经过三个核电基地四台商运机组的实践验证,改进后的定期试验系统完全满足商运机组的定期试验需求。
A CPR1000 nuclear power project uses periodic test system (Automatic Tester) of Mitsubishi MELTAC-N plus R3 platform to complete periodic test of reactor protection system T2 and T3. The platform and equipment are applied to CPR1000 nuclear power unit for the first time. Its design concept is completely different from that of reference power station [1] In this paper, through deep research on the working principle, communication mode and design concept of periodic test system, the paper analyzes and finds the design problems of five types (more than ten) periodic test systems based on expected unit status and studies them one by one. After the practice verification of four commercial units of three nuclear power bases, the improved periodic test system fully meets the regular test requirements of the commercial operation units.