燃气-蒸汽联合循环蒸汽系统参数影响分析  

Analysis of Steam System Parameters of a Combined Cycle Power Plant

作　　者：韦晓峰 王树成 李哲伦 张高强 张洋 付忠广[2] WEI Xiaofeng;WANG Shucheng;LI Zhelun;ZHANG Gaoqiang;ZHANG Yang;FU Zhongguang(State Power Investment Corporation,Zhengzhou Gas Power Generation Co.,Ltd.,Zhengzhou 450010,China;Key Laboratory of Condition Monitoring and Control for Power Plant Equipment,North China Electric Power University,Beijing 102206,China)

机构地区：[1]国家电投集团郑州燃气发电有限公司,河南郑州450010 [2]华北电力大学电站设备状态监测与控制教育部重点实验室,北京102206

出　　处：《锅炉技术》2018年第6期13-17,共5页Boiler Technology

基　　金：北京市自然基金(3162030);中央高校基本科研业务经费(2018QN035)

摘　　要：以SGT5-4000F型燃气-蒸汽联合循环为研究对象,以系统热平衡方程为理论依据建立数学模型。推导了余热锅炉效率及排烟温度的解析式,并对联合循环蒸汽侧的主要参数对余热锅炉效率及排烟温度的影响进行了分析。结果表明:高压蒸汽的压力及温度升高会使余热锅炉效率降低,排烟温度也会随之升高。中压蒸汽压力的影响则与之相反。本研究的结果可以为燃气-蒸汽联合循环的设计提供理论参考。The SGT5-4000F combined cycle power plant is taken as the research object, and the mathematical model of proposed system is established via the theoretical of heat balance.Besides, the formula of heat recovery steam generator(HRSG) efficiency and exhaust gas temperature is derived. In addition, the influence of steam system parameters on the efficiency and exhaust gas temperature of the HRSG are analyzed. Results show that the HRSG efficiency will drop and exhaust gas temperature increase with the rise of pressures and temperatures of high-pressure steam and reheat steam. While the pressure of mediumpressure steam has an opposite effect. The results of this study can provide a theoretical reference for the design of combined cycle power plants.

关 键 词：燃气-蒸汽联合循环 余热锅炉 蒸汽系统优化 影响因素 能效分析 

分 类 号：TK47[动力工程及工程热物理—动力机械及工程]