Comprehensive Evaluation of Influence of Renewable Energy Generation Integration on Distribution Networks Based on Positive and Negative Effect Indexes

With the development of renewable energy generation,it is necessary to evaluate its potential influences on distribution networks.Considering characteristics of grid-connected renewable energy generation,a comprehensive evaluation method was proposed based on positive and negative effect indexes.Common weights of indexes with incomplete information were determined by DS/AHP method,and then the weight synthesizing of positive and negative effect indexes were deducted from penalty-incentive balance functions.The comprehensive evaluation results were generated by grey relation analyses.A case study was conducted in MATLAB simulation environment with field measurement data collected from a 2 MW grid-connected PV power station in a 10kV distribution network.The testing result validates the effectiveness of the proposed evaluation method.