对不同标准中规定的锅炉输入热量计算方法进行了分析,指出同一机组在同一工况下,只有在基准温度与燃料温度和空气预热器入口空气温度相等且雾化燃油所消耗的蒸汽量为零时,依据不同标准得到的锅炉热效率以及由此得到的发电标准煤耗率才完全相同.基于锅炉热效率反平衡计算表达式,采用微分方法并结合泰勒公式,得到燃料温度、空气预热器入口空气温度、所采用的基准温度以及煤种偏离基准参数时,引起锅炉热效率和发电标准煤耗率偏差的计算方法,并以某2台300MW凝汽式机组为例进行了计算验证.结果表明:将试验工况下的锅炉热效率和发电标准煤耗率修正到同一基准参数下时,不同机组之间的锅炉热效率和发电标准煤耗率才具有可比性. The calculation method of the heat input of boiler in different standards is analyzed. It is pointed out that only when the reference temperature is equal to the fuel temperature and the inlet air temperature of the air preheater and the amount of steam consumed by the atomized fuel is Zero, according to different standards obtained boiler thermal efficiency and the resulting power generation standard coal consumption rate is exactly the same.Based on the thermal efficiency of the boiler anti-balance expression, the differential method and the Taylor formula, the fuel temperature, air preheater inlet air Temperature, the reference temperature used and the coal deviation from the reference parameters, the boiler thermal efficiency and power generation standard coal consumption rate deviation calculation method, and a 2 sets of 300MW condensing unit as an example were calculated and verified.The results show that: the test When the boiler thermal efficiency and the standard coal consumption rate of power generation are corrected to the same reference parameter, the boiler thermal efficiency and the standard coal consumption rate of power generation between different units are comparable.