基于AHP-RS的电网本质安全评价指标权重计算

Weight Calculation of Grid Intrinsic Safety Evaluation Index Based on AHP-RS

在电网本质安全评价过程中,确定评价指标的权重是一个必要的环节,权重值的大小将直接影响评价结果。根据所构建的评价指标体系,运用层次分析法(AHP)来确定主观权重,运用粗糙集(RS)理论来确定客观权重,并通过最小相对信息熵原理将二者进行组合,得到兼顾专家经验和客观信息的评价指标权重。实例应用表明,该组合赋权法更加合理有效,实用性更强。

In the process of intrinsic safety evaluation of power grids,determining the weight of evaluation indicators is a necessary link,and the weight value will directly affect the evaluation results.According to the constructed evaluation index system,the Analytic Hierarchy Process (AHP) is used to determine the subjective weights,and the Rough Set(RS) theory is used to determine the objective weights,and combine the two by the principle of minimum relative information entropy to get the weight that takes into account the expert experience and objective information.The example application shows that the combination weighting method is more reasonable,more effective and more practical.