Comprehensive Evaluation System of Power Grids under Consideration of Distribution Characteristics of Index Data

Under the background of power grid transformation and upgrading, in order to realize the high-quality development of power grids, an evaluation index system suitable for the high-quality development stage of power grids is proposed based on analytic hierarchy process, and subjective weight is set. The index weight is adjusted according to the data correlation characteristics, and the objective weight under the consideration of dispersion degree information of index data, the entropy weight method and the variation coefficient method. The power grid is scored using the membership score algorithm based on distribution fitting according to the data distribution characteristic information. Finally the indexes are weighted comprehensively using different weighting methods, and the final score is given according to the membership score. The results show that the evaluation results can give a detailed analysis of the current operation status of power grids ad demonstrate the current weak links of power grids, thus providing targeted guidance for the power grid planning in the high-quality development stage.