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针对某台600MW亚临界空冷机组,对厂家提供的末级高加端差修正曲线进行了评价。采用等效热降法、热力系统建模法等不同计算方法,对相同热力系统的末级高加端差对机组出力及热耗的影响进行了分析,并给出了比较及分析结果,指出了修正曲线中存在的问题。提供的修正曲线数据可供评价类似空冷机组时参考。
For a 600MW subcritical air-cooled unit, the end-stage plus plus end-point correction curve provided by the manufacturer is evaluated. By using different methods of calculation, such as equivalent thermal drop method and thermodynamic system modeling method, the influence of the terminal difference of the same thermodynamic system on the unit output and heat consumption is analyzed. The results of comparison and analysis are also given Corrected the problem in the curve. Calibration curve data provided for the evaluation of similar air-cooled units for reference.