HTR-PM二回路图形建模与仿真研究

介绍了在vPower仿真平台上嵌入THERMIX代码来研究紧凑型高温气冷堆仿真机的方法。根据模块式高温气冷堆示范电厂二回路系统的特点和结构,利用vPower仿真平台建立二回路各个系统的组态模型并进行稳态和瞬态仿真结果分析。结果表明,稳态值与设计值的误差均在2%范围内;额定工况下,主调节阀关小和给水流量减少2个典型瞬态响应过程曲线趋势合理,动态响应各项指标及最终稳定值满足要求;循环水泵关闭导致凝汽器循环水中断的事故情况下,因凝汽器真空过低调节主蒸汽阀门迅速关闭,主蒸汽流量减小同时汽轮机跳闸。

Study on Graphical Modeling and Simulation of Secondary Loop in HTR-PM

In this paper,the development of a compact engineering simulator of the HTR-PM by em-bedding THERMIX code into the vPower simulation environment is introduced firstly.Then the structure of the simulation system of secondary loop is presented in detail,based on the vPower simulation platform.Steady state and transient conditions of the HTR-PM have been studied by the help of this simulation system.The results show that the errors of the steady-state value and design value are within 2%.At the rated operating conditions,the typical transient response curve of the main valve down-step and feedwater flow reducing have rational trend,and the indicators and the final stable value of the dynamic response meet the requirements.The condenser circulating water disrupts for the closing of the circulating water pump causes low condenser vacuum,and the regulating valve quickly closes,the main steam flow decreases and the turbine trips.