基于快速性与经济性多目标优化的火电厂厂级负荷分配研究

Multi-objective Optimal Load Distribution Based on Speediness and Economy in Power Plants

为适应我国当前电力市场新的运作模式,文中首先提出了基于快速性的厂级负荷分配数学决策模型,然后在原有经济性数学模型的基础上,通过对目标函数进行无量纲化处理,提出了基于快速性与经济性多目标优化的厂级负荷分配数学决策模型,并详细论述了基于动态规划求解的厂级负荷优化分配解决方案。该模型通过调节其中一个权重的大小,能够迅速改变厂级负荷分配的快速性与经济性指标。这不仅为新形势下的电厂与电网找到一个共同的利益平衡点,而且为电厂在满足快速完成电网负荷需求这一本质要求的同时,最大限度地降低煤耗量,赢得最大上网负荷提供了科学的调度依据。最后给出实例,结果证明了该模型的正确性,有效性及极强的可操作性。

In order to adapt the new mode of electric power market in our country, this paper brought forward optimal load distribution model based on speediness first, and then, on the basis of economic model, It brought forward optimal load distribution model based on speediness and economy via having dimensionless disposal to aim functions. What＇s more, it discussed the application of dynamic programming in detail. It can change speediness and economy index rapidly by adjusting weight of them. It not only finds a profit balance point between power plant and power network but also provides scientific basis for load distribution, which lets power plants reduce coal consumption to minimum and win maximal load while meeting speed demanded by power network at the same time. Finally, an example is given to show that the model is correct, effective and powerful operating performance.