基于进气温度调节的燃气-蒸汽联合循环机组热力性能优化分析  

Thermal Performance Optimization Analysis of Gas-Steam Combined Cycle Unit Based on the Inlet Gas Temperature Adjustment

作　　者：范雪飞 蒋俊 刘网扣 朱志劼 王思远 FAN Xuefei;JIANG Jun;LIU Wangkou;ZHU Zhijie;WANG Siywan(Shanghai Power Equipment Research Institute Co.,I.td.,Shanghai 200240,China)

机构地区：[1]上海发电设备成套设计研究院有限责任公司,上海200240

出　　处：《动力工程学报》2021年第4期272-277,共6页Journal of Chinese Society of Power Engineering

摘　　要：以GES109FA燃气-蒸汽联合循环机组为研究对象,提出了基于进气温度调节的机组热力性能综合优化方案,即分别利用余热锅炉低压蒸汽、尾部烟道排烟在1台机组上实现压气机进气冷却和进气加热的功能,给出了相应的热力设计参数,并采用GTPro软件进行了进气冷却或进气加热前后的热力计算。结果表明:在基本负荷下,降低进气温度可使联合循环发电功率提高4.73%~6.10%;在部分负荷下,进气温度由15℃提高到35℃时,燃机负荷率上升8%~14%,联合循环发电效率可以提高0.88%左右,从而满足机组在不同大气温度和负荷条件下热力性能优化的要求。Taking the GE S109 FA gas-steam combined cycle unit as the research object, a comprehensive optimization scheme based on the inlet gas temperature adjustment for the thermal performance of the unit was proposed. The low-pressure steam of the waste heat boiler and the exhaust gas of the tail flue gas were used to cool and heat the inlet gas of the compressor. The corresponding thermodynamic design parameters were given, and the thermodynamic calculation before and after inlet gas cooling or heating was carried out by using the thermodynamic calculation software GT Pro. Results show that reducing the inlet gas temperature can increase the combined cycle generation power by 4.73%-6.10% under the basic load. Under different partial loads, when the inlet gas temperature is heated from 15 ℃ to 35 ℃, the gas turbine load rate can be increased by 8%-14%, and the combined cycle power generation efficiency can be increased by about 0.88%, so as to meet the requirements of thermal performance optimization of the unit under different atmospheric temperature and load conditions.

关 键 词：燃气-蒸汽联合循环机组 进气加热 进气冷却 性能优化 

分 类 号：TK11[动力工程及工程热物理—热能工程]