氦气轮机发电系统动态仿真模型  

Dynamic Model of Helium Turbine Cycle System

作　　者：解衡[1] 王捷[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《核动力工程》2011年第2期16-19,共4页Nuclear Power Engineering

摘　　要：采用一维流动与传热模型对氦气轮机发电系统的涡轮机、压气机、换热器、阀门、管道以及轴转速模型进行模拟,采用MATLAB编制了氦气轮机闭式循环系统的动态计算程序。采用该程序计算分析了氦气轮机系统电网负荷丧失事故工况以及主换热器换热量减少瞬态工况下氦气轮机发电系统氦气流量、温度、轴转速、功率以及压气机喘振裕度等参数的变化。结果表明,计算结果与理论分析符合较好,本文建立的模型可以反映氦气轮机发电系统的动态过程。The one-dimension flow and heat transfer models are built to simulate the components of helium turbine system,including the helium turbine model,compressor model,heat exchanger model,valve model,pipe model and shaft velocity model.The transient simulation code is established in MATLAB.The accident of loss of load and the transient of decreasing heat transfer capacity of the main heat exchanger by 5% are simulated,and important parameters like helium flow rate,temperature,shaft velocity,power rate and compressor surge margin are analyzed.The calculated results agree with the analyzed results.This shows that the present model can be used to simulate the dynamic process of helium turbine closed-cycle system.

关 键 词：氦气轮机 动态过程 计算模拟 高温气冷堆 

分 类 号：TL424[核科学技术—核技术及应用] TK479.12[动力工程及工程热物理—动力机械及工程]