摘要
燃气-蒸汽联合循环热电联产机组的出力和热耗受环境温度和运行参数等因素影响,为更好地了解联合循环的热力学性质,为机组的优化运行提供理论支持和数据支撑,以GE公司6F型燃气轮机为研究对象,分析了不同环境温度和燃气轮机负荷率对其运行特性的影响。分析结果表明:随着环境温度的升高,燃气轮机发电功率和效率大幅降低,联合循环输出功率下降明显;满负荷时,由于底循环的影响,存在最佳环境温度,使得联合循环效率取得最大值;燃气轮机负荷率的变化会使机组调峰能力发生改变,随着供热量的增加,联合循环发电功率线性下降,存在临界供热值,使得燃气轮机负荷率与联合循环效率成反相关。
The output and heat consumption of the gas-steam combined cycle cogeneration units are affected by ambient temperature and operating parameters. To have a better understanding on the thermodynamic property of cogeneration units, and provide a sound theoretical and data basis for the optimized operation, taking a GE 6 F gas turbine as the research object, effects of ambient temperature and load ratio on the performance of gas turbines are analyzed.The study results show that with the increase of ambient temperature, the power output and efficiency of gas turbine decreases greatly, and so does the combined cycle output. At full load, due to the influence of bottom cycle,there is an optimum ambient temperature for maximized combined cycle efficiency. The fluctuation of gas turbine load ratio will impact the peak load regulating capacity of cogeneration units.With the increase of heat supply, the combined cycle power output shows a linear decrease and a critical heating value, which means load ratio of gas turbine anticorrelated with the efficiency of combined cycle.
作者
祖航
王秋颖
ZU Hang;WANG Qiuying(School of Energy and Environment,Southeast University,Nanjing 210096,China)
出处
《华电技术》
CAS
2019年第11期49-52,共4页
HUADIAN TECHNOLOGY
关键词
燃气-蒸汽联合循环
环境温度
负荷率
发电功率
效率
调峰
gas-steam combined cycle
ambient temperature
load ratio
power output
efficiency
peak load regulating