A static simulation model of power plant boiler system performance is built up byusing the methods of process system engineering. The primary research is proceeded in thesubsystem models, the decomposition method of subsystems and the cutting and convergencestrategy of recycle loops. The corresponding software for simulating the performance of boilersystem is developed. Taking the 670T/h boiler set maed in China in the 100% load pointand the 70% load point are calculated by using our model,the results sre checked with thedata provided by producer. It is further proven that the performance simulation modelhasmore accuracy in application and can meet the reqirements of the unit performance analysisand the prediction of operation behavior.
该文利用热经济学的先进后出LIFO(Last In First Out)模式和结构理论的数学方法,对200MW机组的热力系统进行了分析,实际计算了热力过程的成本形成和分布情况。依据流入流出工质流的流后入先出的规则,绘制了工质流的参数区间图,并以此为工具,建立了机组的生产结构图,从而对复杂热力系统部件之间的生产关系(或称为内部的商品交易关系)进行了描述。这种描述的数学模型是结构理论建立的代数方程组,求解结果可以得到各个部件的燃料/产品流的成本。生产过程中的和系统终端产品的成本分析是热力系统运行状况评价的依据,同时也是终端产品定价的重要参考。
