基于C++ Builder的核电站二回路热力系统建模与实时仿真

Modeling and Real-time Simulation of Secondary Circuit Thermal System for Nuclear Power Station Based on C++ Builder

以大亚湾核电站二回路主要热力设备为主要研究对象,基于模块化思想,自主开发了基于C++Builder6.0的动态仿真软件。选取典型工况进行调试,在100%、90%稳态工况下绝大多数主要热力参数误差小于5%,100%—70%降负荷运行时,二回路热力系统各主要节点流量、压力、温度等关键参数的变化趋势很好地反映了该系统的动态响应特性,表明该仿直系统静态精度较高,动态响应特性良好,可用于预测核电二回路热力系统动、静态特性。

Based on modularity, the dynamic simulation system of main second-loop devices in Daya Bay Nuclear Power Plant was developed originally under C ＋ ＋ Builder 6.0 environment. Tests were taken under the typical working load, in which most main thermal parameters shared an error limit within 5% under 100% or 90% working load; while the changing trends of the parameters such as flow, pressure and temperature could well reflect the dynamic response characteristic of secondary circuit thermal system under 100%--70% working load. The original simulation system outstands in static accuracy and varying load response, which indicates it is significant in predicting dynamic and static working characteristics of the secondary thermal circuit in the nuclear power plant.