Multiattribute comprehensive risk assessment of distribution network connected with distributed generations

Profound changes are taking place in distribution network. Increasing large-scale access of distributed generations (DGs) to distribution network provides more possibilities for interrelation and interaction among power supply, network and load. Meanwhile, DGs also bring potential hazards to both operation and management of distribution network. In this paper, from the perspectives of network operation risk and company management risk, a comprehensive risk assessment system covering multiattribute influencing factors is established, and a risk assessment model based on modified AHP combined with subjective and objective approaches is designed to help power companies have a quantified understanding of network risk state. Finally, the risk assessment scheme is implemented in a modified IEEE 33-node distribution network to verify its feasibility and effectiveness. 1