Research on retrofit and evaluation of smart grid equipment based on improved TOPSIS method

The intelligent evaluation of substation primary equipment is an important problem in the construction of smart grid. Based on the actual project data, the following work has been done in this paper: The evaluation model of intelligent level of primary equipment in substation is established; the concept of correlation coefficient is put forward by combining AHP (Analytic Hierarchy Process) and entropy weight method, and according to their correlation, a comprehensive weight calculation method is proposed, which is used to calculate the weight of each evaluation index; the traditional TOPSIS is improved, and the possible inverse sorting problem after changing the number of evaluation targets is solved; finally, a practical example is given to verify the rationality and accuracy of the evaluation method, which can provide practical guidance for the intelligent transformation of substation.