环境温度对PG9351FA燃气轮机及联合循环性能影响的研究  

Research on the Influence of Ambient Temperature on PG9351FA Gas Turbine and Combined Cycle Performance

作　　者：秦祖志 董纯涛 严志远 郑银福 Qin Zuzhi;Dong Chuntao;Yan Zhiyuan;Zheng Yinfu(SPIC Jiangmen Energy Development Co.,Ltd.,Jiangmen 529300,Guangdong Province,China;CHN Science and Technology Research Co.,Ltd.,Nanjing 210046,China)

机构地区：[1]国电投(江门)能源发展有限公司,广东江门529300 [2]国家能源集团技术研究院有限公司,南京210046

出　　处：《发电设备》2024年第6期335-340,共6页Power Equipment

基　　金：国家重点研发计划(2022YFB4003905)。

摘　　要：以PG9351FA燃气轮机联合循环机组为研究对象,基于Thermoflex软件建立机组模型,分别对满负荷及定负荷运行工况进行了性能计算,并且分析了系统的各项关键参数.结果表明:对比满负荷和定负荷工况,环境温度升高对汽轮机、余热锅炉和联合循环效率的影响相同,但是对燃气轮机效率影响的差异较大;联合循环机组在定负荷工况运行时,可以采用合适的低品位热源提高燃气轮机入口空气温度,从而提高燃气轮机效率;同时,可以通过冷端优化等措施,降低汽轮机背压以改善汽轮机运行性能.Taking a PG9351FA gas turbine combined cycle unit as the research object,the unit model was established based on Thermoflex software.The performance of unit under full load and constant load conditions was calculated respectively,and the key parameters of the system were analysed.Results show that,compared with the full load condition and the constant load condition,the increase of ambient temperature has the same effect on the efficiencies of steam turbine,waste heat boiler and combined cycle,but the difference on the efficiency of gas turbine is significant.When the combined cycle unit is operating under constant load condition,a suitable low-grade heat source can be used to improve the inlet air temperature of the gas turbine,so as to improve the efficiency of the gas turbine.At the same time,the back pressure of steam turbine can be reduced to improve the performance of steam turbine by cold end optimization and other measures.

关 键 词：燃气轮机 联合循环 环境温度 满负荷 定负荷 性能计算 

分 类 号：TM611.3[电气工程—电力系统及自动化]