Assessment of AC/DC hybrid microgrids based on grey comprehensive evaluation theory

With the increasing penetration of distributed generation and expansion of load types, more and more AC/DC hybrid microgrids are gradually formed at the terminal of distribution network, which influence the safety and stability of the distribution network severely. This paper researches the planning program, power supply reliability and power quality of the hybrid microgrids, analyzes the influence of DC distribution network integrating into traditional AC distribution network. Afterwards, a comprehensive evaluation index system considering both AC and DC power supply model is proposed and set up for the grey comprehensive evaluation model. Finally, in order to verify the feasibility and effectiveness of the proposed evaluation system and evaluation model, an assessment case is studied.