通过对邢台电厂国产２００ＭＷ汽轮机组进行供电煤耗的测试工作，结果表明该型号机组当深度调峰达５５％～６０％负荷时，其经济性极差，锅炉和汽轮机效率均大幅下降，机组热耗率升高，厂用电率增加，从而导致供电煤耗剧增。试验结果同时表明该类型机组深度调峰时滑压运行方式的经济性明显好于定压运行方式。 Through the test of power supply coal consumption of domestic 200MW turbine units in Xingtai Power Plant, the results show that when the depth of the unit reaches 55% ~ 60% load, its economy is very poor, the boiler and steam turbine efficiency are greatly reduced, unit heat consumption The rate of increase, plant electricity rates increase, resulting in a sharp increase in coal consumption. The test results also show that the economy of the sliding pressure mode is obviously better than that of the constant pressure mode when the depth of the unit is peaking.