The integrated evaluation of impact of distributed generation on distribution network

This paper studies and evaluates influences of Distributed Generation(DG)on the distribution networks.B y analyzing various impacts after DG accessing to the network,t his paper summarizes and proposes several quantification indices to show network losses,v oltage quality,r eliability,environmental impact degree,e tc,a nd presents the calculation methods corresponding to different indices.To fulfill integrated evaluation of DG impact on distribution network,a linear weighting of each index is adopted.And the weight factor is defined based on the combination of the Analytic Hierarchy Process(AHP)and the Principal Component Analysis(P CA).On the basis of the 20-node system,the simulation of the computation method and the integrated evaluation method is carried out aiming to different situations of DG,and simulation results are analyzed and discussed.