【摘要】 针对核电机组采用的给水加热系统，基于MATLAB/Simulink构建了由除氧器、低压加热器和高压加热器组成的核电机组给水加热模型，并选取高温气冷堆核电站机组负荷的30%、50%和100%3个运行工况计算值与设计值进行比较。结果表明：机组各种运行工况下给水加热系统关键参数的稳态响应结果与热平衡设计值吻合良好，最大误差小于1%,满足计算精度要求，证明所开发核电机组给水加热系统仿真软件的准确性。基于所开发的仿真模型验证了给水加热系统在机组线性功率变化和停机不停堆瞬态运行工况下动态特性满足运行规范要求。研究结果可应用于新型核电机组给水加热系统的热力系统设计。更多还原

【Abstract】 Based on MATLAB/Simulink, the paper constructs a simulation model of the feed-water heating system of a nuclear power plant, consisting of a deaerator, a low-pressure heater, and a high-pressure heater for the feed-water heating system. The calculated values of 30%, 50%, and 100% of the operating conditions of high temperature gas cooled reactor nuclear power plant are compared with the design values. The results show that the steady-state response results of the key parameters of the feed-water heating system under various operating conditions of the unit are in good agreement with the thermal balance design values, with a maximum error of less than 1%, meeting the calculation accuracy requirements. This proves the accuracy of the feed-water heating system simulation software of the nuclear power plant developed. And based on the developed simulation model, the dynamic characteristics of the feed-water heating system were verified to meet the operational specifications under linear power changes of the plant and transient operating conditions of shutdown without shutdown of the reactor. The research results of this article can be applied to the thermal system design of the feed-water heating system of nuclear power plant.更多还原