摘要
通过对某330 MW太阳能协同常规燃煤发电机组进行能耗分析,探讨330 MW太阳能协同常规燃煤发电机组的最优方案,为常规燃煤发电机组节能降耗改造提供参考。通过对宁夏某厂的330 MW亚临界燃煤机组,在50%THA、65%THA、80%THA及THA四个工况下开展了汽轮机热力性能试验,计算常规燃煤发电机组及太阳能集热场分别代替1#、2#、3#高压加热器时的能耗情况。三种协同发电方案下机组的能耗要优于常规燃煤发电机组,其中协同方案2(太阳能集热场代替2#高压加热器)在THA工况下的再热蒸汽流量变化幅度最大,相较于常规发电燃煤机组,再热蒸汽流量变化量绝对值为27.43 t/h且发电煤耗率降低6.4%。由试验结果可知,对该330 MW亚临界燃煤机组而言,太阳能集热场替代常规燃煤发电机组2#高压加热器为最优方案。
By analyzing the energy consumption of 330 MW solar energy cooperative conventional coal-fired generating units,the optimal scheme of 330 MW solar energy cooperative conventional coal-fired generating units is discussed.It can provide reference for the transformation of energy conservation and consumption reduction of conventional coal-fired generating units.The 330 MW subcritical coal-fired unit in a plant in Ningxia was studied by using the thermal performance test code of steam turbine.The thermal performance test of steam turbine is carried out under the four working conditions of 50%THA,65%THA,80%THA and THA,and the energy consumption of conventional coal-fired generator unit and solar collector when replacing the 1#,2#and 3#high-pressure heaters respectively was calculated.The energy consumption of the units under the three collaborative power generation schemes is better than that of the conventional coal-fired power generation units.The reheat steam flow of the collaborative scheme 2(solar collector field instead of 2#high pressure heater)changes the most under tha conditions.Compared with the conventional coal-fired power generation units,the absolute value of the reheat steam flow change is 27.43 t/h and the coal consumption rate for power generation is reduced by 6.4%.Solar collector field is the best scheme to replace the 2#high-pressure heater of conventional coal-fired generator set.
作者
张荔
汪靖
汪旭宁
李晓彤
ZHANG Li;WANG Jing;WANG Xu-ning;LI Xiao-tong(Ningxia Polytechnic,Yinchuan 750000,China;Yinchuan branch,China Energy Science and Technology Research Institute Co.,Ltd.,Yinchuan 750000,China)
出处
《电力学报》
2022年第4期343-350,共8页
Journal of Electric Power
基金
2021年度宁夏职业技术学院科研发展基金资助项目(330 MW太阳能协同燃煤发电机组的性能分析,XJ202122)。
关键词
330MW亚临界机组
太阳能协同燃煤发电
能耗分析
330 MW subcritical unit
solar collaborative coal-fired power generation
energy consumption analysis
