The Quantitative Assessment Study on the ‘First-Class’ of the Key Indices of Grid Evaluation

Carrying out international benchmarking on the operating management of the grid can clear goal orientation, which has targeted to enhance the performances of the power grid. How to do the quantitative assessment on the key indices of grid evaluation and determine the ‘first-class’ of the international power grid has become an important issue which is worthy of study. Under this background, this paper selects eight key indices which are internationally accepted and can comprehensively reflect the overall development and operation of the grid. Furthermore, this paper does the quantitative assessment on each key index by quintile method, optimal segmentation method, and K-means clustering method in order to draw the appropriate “first-class” interval. On this basis, this paper analyzes the advantages and disadvantages of assessing different types of indices by different methods and determines the top level of each key index to a reference for the grid assessment with the combination of the actual situation.