摘要
火电机组承担大规模热负荷后运行特性发生变化,煤耗指标评价也更加复杂,现行的发电煤耗计算方法不能合理评价热电机组真实煤耗水平和实际节煤效果。基于热电联产机组实际生产流程重新定义了背压供热机组发电煤耗率指标计算方法,结合背压机组和纯凝机组煤耗率,利用并联蒸汽流理论计算抽凝机组煤耗率。提出社会节煤量指标客观评价热电联产机组节能点及节能量。算例结果表明,新的计算方法能够真实反映机组发电煤耗水平和社会节能效果。
The operating characteristics of thermal power units have changed after they have undertaken large-scale thermal loads,and coal consumption evaluation has become more complicated. The current coal consumption calculation methods for power generation cannot reasonably evaluate the real coal consumption level and actual coal saving effects of thermal power units.Based on the actual production process of the cogeneration unit,the calculation method of the coal consumption rate of the back pressure heating unit is redefines.Combining with the coal consumption rate of the back pressure unit and the pure condensing unit,the parallel steam flow theory is used to calculate the coal consumption rate of the condensing bleeder turbine unit,and the social coal saving index is proposed to objectively evaluate the energy saving point and energy saving of the cogeneration unit.The calculation example results show that the new coal consumption index can accurately reflect the coal consumption level of power generation process and the social energy saving effect.
作者
郭俊山
游大宁
康夜雨
巩志强
商攀峰
GUO Junshan;YOU Daning;KANG Yeyu;GONG Zhiqiang;SHANG Panfeng(State Grid Shandong Electric Power Research Institute,Jinan 250003,China;State Grid Shandong Electric Power Company,Jinan 250001,China;Huaneng International Power Co.,Ltd.,Dezhou Power Plant,Dezhou 253006,China)
出处
《山东电力技术》
2022年第9期68-71,共4页
Shandong Electric Power
基金
山东省自然科学基金项目(ZR2020QE199)
山东电力研究院技术革新项目“集中供热热力网动态特性研究”(ZY-2020-17)。
关键词
热电联产机组
煤耗率
节能量
cogeneration unit
coal consumption rate
energy saving
