Comprehensive Assessment System and Method of Smart Distribution Grid

The core value and demands of smart distribution grid cannot be covered by existing distribution network assessment method, besides the subjectivity of weight calculation is strong and easy to be impacted by human factor, so a new comprehensive assessment system and method for smart distribution grid is constructed. The index system is divided into two hierarchies: the macro demand index set and micro assessment index set, in which the macro demand index set reflects macro presentation of smart distribution grid and the micro assessment index set characterizes the micro factors in the former, and there is a close causal correlation relation between the two sets. Meanwhile, a combined weight hierarchical optimizing model based on DEMATEL-ANP-anti-entropy weight method and improved gray correlation method is proposed to solve and calculate index weights of the index system to make subjectivity and objectivity simultaneously considered. Applying the proposed method to a certain regional distribution grid, the results of application show that the proposed method is practicable and can assess the intelligent development level and obtain actual benefit as well as identify the operating conditions of distribution grid and its weak link. The proposed method is available for reference to the construction, planning, renovation and optimized operation of smart distribution grid.