热电联产机组调峰能力的研究与应用

Study and Application of Heating Units′ Peak-load Regulating Capacity

针对我国三北地区冬季采暖期电网调峰能力严重不足的现状,以研究热电联产机组采暖期调峰能力为目的,利用等效热降理论建立热电联产机组热力曲线数学模型,以实验的方法改变新蒸汽参数,在相应的供热负荷下确定机组的供电负荷可调整范围。以实验结果为基础对模型进行修正,从而确定机组有功出力的可调区间,为热电联产机组调度提供理论依据和技术支持。在实际电网的应用证明了模型的正确性和有效性。

In allusion to the serious capability inadequacy of peak-load regulation during the heating seasons in north China, the peak-load regulation capacity from cogeneration units during the heating period is studied in this paper. The thermal curve mathematical model of cogeneration unit is developed by using the equivalent heat drop theory, and the steam parameters are adjusted by experiments. The adjusted range of power supply is then determined with the corresponding heating load. Based on the experimental results, on the model is amended to obtain the adjustable interval of unit active power, which supplies theoretical basis and technical support for the cogeneration unit. The accuracy and validity of the method are confirmed by the application in Tianjin power grid.