摘要
汽轮机凝汽器是核电站重要的辅机设备,其运行参数动态特性直接影响汽轮机运行的经济性和安全性。基于分布式热动力学原理,在考虑不凝结气体对凝汽器换热特性影响的前提下,建立核电站表面式凝汽器动态参数模型。采用Adams多步仿真算法对AP1000核电凝汽器实时系统进行仿真。分析循环冷却水温度、流量、汽轮机排汽量阶跃变化对凝汽器运行参数动态特性的影响。研究表明:进汽量阶跃增加工况的仿真结果与实验值基本吻合,进汽量阶跃降低工况计算值略小于实验值,仿真模型计算精度较高。研究结果可为核电凝汽器变工况运行提供参考。
Steam turbine condenser is important auxiliary equipment for nuclear power plant. The dynamic characteristic of its operating parameters directly affects the economy and safety of steam turbine operation.Based on the principle of distributed thermo dynamics and considering the influence of non condensable gas on the heat transfer characteristics of condenser, a dynamic parameter model for surface condenser of nuclear power plant is established. The Adams multi step simulation algorithm is used to simulate the real-time system of AP1000 nuclear condenser. The influence of the temperature, flow rate of circulating cooling water and steam turbine exhaust volume step change on the dynamic characteristics of the operating parameters of the condenser are analyzed. The results of the study show that the simulation results of step up operation of intake steam are basically consistent with the experimental values, the simulation results of step down operation of intake steam are slightly lower than the experimental values and the calculation precision of the simulation model very well. The research results can provide reference for the operation of nuclear condenser in variable operating conditions.
作者
郭宏恩
GUO Hongen(Shandong Nuclear Power Co.,Ltd.,Yantai 265116,China)
出处
《中国测试》
CAS
北大核心
2019年第8期55-60,共6页
China Measurement & Test
基金
中国电力投资集团科技项目(2013-049-ZHD-KJ-X)
关键词
凝汽器
核电汽轮机
运行参数
动态特性
condenser
nuclear steam turbine
operating parameters
dynamic characteristics
