融合熵权TOPSIS法与灰色关联度法的火电机组综合评价方法

Comprehensive Evaluation Method of Thermal Power Unit on Basis of Entropy Weight TOPSIS Method and Grey Relational Grade Method

针对火电机组运行特点,提出一种基于熵权TOPSIS法与灰色关联度法相结合的火电机组综合状态评估方法,采用熵权法确定各级评价指标权重,使TOPSIS法与灰色关联度法相耦合得出各机组的优劣排序,从横纵两个维度对火电机组运行状态进行综合评价。通过对5台600 MW机组进行综合评价,结果表明:文中建立的火电机组综合评价模型不仅能合理有效的对机组进行整体的综合评判,还能反映各机组指标的几何形状相似程度判断其内部因素变化态势,对不同电厂机组间竞赛与机组状态对比提供较好的方法支持。

According to the characteristics of thermal power units’operation,this paper proposed a method based on entropy weight TOPSIS method and grey relational grade method.It determines the weights of assessing indexes in each level by adopting entropy weight method,sorts the quality of each unit by coupling TOPSIS method and grey relational grade method,and comprehensively evaluates the operation state of thermal power units from both transverse and longitudinal dimensions.The result of the comprehensive evaluation of five 600 MW units shows that the proposed method can not only provide a reasonable and effective evaluation of the units,but also reflect the similarity degree of the geometric shapes and the change of internal factors of the units.The method can support units’competition and operation state comparison of units from different power plants.