燃气—蒸汽联合循环机组热电负荷特性分析
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摘要
建立了某9F级联合循环机组的性能计算模型,以EBSILON软件为平台完成了联合循环机组的仿真分析。首先研究不同抽汽系数下系统热电负荷特性指标随燃机负荷率的变化,其次从联合循环机组热电负荷可行域、机组运行效率以及机组收益3个方面,分析了环境温度变化对联合循环机组热电负荷特性的影响。结果表明:随着环境温度升高,联合循环机组的供热能力与发电能力均减小;机组运行效率、机组单位收益与机组总净收益随供热负荷增加均逐渐增大;其中,机组运行效率与机组单位收益在不同的环境温度下呈现不同的增长速率,环境温度越高,增长速率越大;机组总净收益在不同环境温度下随供热负荷增大而增大的速率基本相等。
The performance calculation model of a 9 F level combined cycle unit is built,and the simulation analysis of the combined cycle unit is completed with EBSILON model. Firstly,the variation of thermoelectric load characteristic index with the load rate of gas turbine under different extraction coefficient is studied. Secondly,the influence of ambient temperature change on the thermoelectric load characteristics is analyzed from three aspects: the feasible area of the thermoelectric load of the combined cycle unit,the operating efficiency of the unit and the revenue of the unit. Results indicate that the heating capacity and power generation capacity are reduced with the increase of ambient temperature. The operating efficiency,unit income and total net income of the unit gradually increase with heating load. Among them,the operating efficiency and unit income show different growth rates at different ambient temperatures; the higher the ambient temperature,the greater the growth rate. The total net income of the unit increases with heating load at the same rate at different ambient temperatures.
The performance calculation model of a 9 F level combined cycle unit is built,and the simulation analysis of the combined cycle unit is completed with EBSILON model. Firstly,the variation of thermoelectric load characteristic index with the load rate of gas turbine under different extraction coefficient is studied. Secondly,the influence of ambient temperature change on the thermoelectric load characteristics is analyzed from three aspects: the feasible area of the thermoelectric load of the combined cycle unit,the operating efficiency of the unit and the revenue of the unit. Results indicate that the heating capacity and power generation capacity are reduced with the increase of ambient temperature. The operating efficiency,unit income and total net income of the unit gradually increase with heating load. Among them,the operating efficiency and unit income show different growth rates at different ambient temperatures; the higher the ambient temperature,the greater the growth rate. The total net income of the unit increases with heating load at the same rate at different ambient temperatures.
引文
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[11] MOHAMMED M K,AWAD O I,RAHMAN M M,et al. The opti-mum performance of the combined cycle power plant:A compre-hensive review[J]. Renewable and Sustainable Energy Reviews,2017,79:459-474.
[12]焦树建,孙守林.燃气轮机与燃气-蒸汽联合循环装置[M].北京:中国电力出版社,2007:559-560.JIAO Shu-jian,SUN Shou-lin. Gas turbine and gas steam com-bined cycle device[M]. Beijing:China Electric Power Press,2007,559-560.
[13]吉建新,董晓鹏.燃气蒸汽联合循环机组供热经济性分析[J].应用能源技术,2017(5):13-16.JI Jian-xin,DONG Xiao-peng. Analysis of heating economy of gas-steam combined cycle unit[J]. Applied Energy Technology,2017(5):13-16.
[2] DE SA A,Al ZUBAIDY S. Gas turbine performance at varying am-bient temperature[J]. Applied Thermal Engineering,2011,31(14):2735-2739.
[3]张杨林子,刘双白.联合循环机组建模及环境参数对其性能的影响[J].电力科学与工程,2016,32(6):68-72.ZHANG Yang-lin-zi,LIU Shuang-bai. Combined cycle unit model-ing and the impact of environmental parameters on performance ofthe unit[J]. Electric Power Science and Engineering,2016,32(6):68-72.
[4]秦锋.环境条件对燃气-蒸汽联合循环机组性能影响[J].煤气与热力,2016,36(7):33-35.QIN Feng. Influence of environmental conditions on performance ofgas-steam combined cycle units[J]. Gas&Heat,2016,36(7):33-35.
[5]朱泓逻.基于Ebsilon的火电厂热力系统建模,监测及优化研究[D].北京:清华大学,2015.ZHU Hong-luo. The research of modeling,monitoring and optimi-zing for thermal system of thermal power plant based on Ebsilon[D]. Beijing:Tsinghua University,2015.
[6]朱正香,韩朝兵,司风琪,等.基于高级过程仿真软件APROS的燃气轮机性能分析[J].热能动力工程,2015,30(4):551-557.ZHU Zheng-xiang,HAN Chao-bing,SI Feng-qi. Gas turbine per-formance analysis based on advanced process simulation softwareAPROS[J]. Journal of Engineering for Thermal Energy and Pow-er,2015,30(4):551-557.
[7]杨承,黄志峰,马晓茜.联合循环热电联产机组变工况性能分析[J].中国电机工程学报,2017,37(12):3514-3524.YANG Cheng,HUANG Zhi-feng,MA Xiao-qian. Analysis of off-state performance of combined cycle combined heat and power u-nits[J]. Proceedings of the CSEE,2017,37(12):3514-3524.
[8] KIM J H,SONG T W,KIM T S,et al. Model development and sim-ulation of transient behavior of heavy duty gas turbines[J]. Journalof Engineering for Gas Turbines and Power(Transactions of theASME),2001,123(3):589-594.
[9] LEE J J,KIM T S. Development of a gas turbine performance anal-ysis program and its application[J]. Energy,2011,36(8):5274-5285.
[10]白子为,张国强,付旭晨,等.燃气-蒸汽联合循环变工况调节方案对比分析[J].动力工程学报,2017,37(8):663-672.BAI Zi-wei,ZHANG Guo-qiang,FU Xu-chen. Comparative analy-sis on operation strategies of a gas-steam combined cycle unit un-der off-design conditions[J]. Journal of Chinese Society of PowerEngineering,2017,37(8):663-672.
[11] MOHAMMED M K,AWAD O I,RAHMAN M M,et al. The opti-mum performance of the combined cycle power plant:A compre-hensive review[J]. Renewable and Sustainable Energy Reviews,2017,79:459-474.
[12]焦树建,孙守林.燃气轮机与燃气-蒸汽联合循环装置[M].北京:中国电力出版社,2007:559-560.JIAO Shu-jian,SUN Shou-lin. Gas turbine and gas steam com-bined cycle device[M]. Beijing:China Electric Power Press,2007,559-560.
[13]吉建新,董晓鹏.燃气蒸汽联合循环机组供热经济性分析[J].应用能源技术,2017(5):13-16.JI Jian-xin,DONG Xiao-peng. Analysis of heating economy of gas-steam combined cycle unit[J]. Applied Energy Technology,2017(5):13-16.