反应堆主冷却剂系统实时仿真计算

Real-Time Simulation Calculation of Reactor Coolant System

对反应堆主冷却剂系统实时仿真进行了研究。在实时仿真支撑平台ASCA下对反应堆主冷却剂系统进行了建模、编程和计算。程序采用了漂移流模型,仿真计算气液混合物内相间非均匀流动的影响,用完整的四象限相似曲线来对主泵进行仿真计算。利用仿真程序对主冷却剂系统进行了降负荷计算,得到了系统压力以及蒸汽发生器压力、水位等参数的变化趋势,与RETRAN02的计算结果进行了比较。结果表明,本仿真程序可以应用于培训模拟器以及反应堆主冷却剂系统安全分析。

The real-time simulation of reactor coolant system is studied in the paper. Under the real-time simulation support system ASCA, a reactor coolant system is modeled, programmed and computed. The influence of uneven flow between the gas and liquid is calculated with the drift-flux model. The four quadrant homologous curves in term of the dimensionless similarity parameters are used to characterize the pump performance in the program. The dynamic trend of system pressure, SG pressure and water level are obtained under the decreasing power in the simulation system. The results show that the program can be used for training simulator and safety analysis of coolant system.