Two-Time-Scale Voltage Control method for AC–DC Hybrid Distribution Systems Under High Photovoltaic Penetration

A two-time-scale voltage control method is proposed in this paper for hybrid distribution systems with high photovoltaic penetration. In the day-ahead stage, hourly optimization question is adopted to dispatch the mechanical equipment. In the intraday stage, based the result of day-ahead schedule, 15-minitely closed-loop model predictive control (MPC) method is used to corrector the power output of electrical equipment. The effectiveness of the proposed model is verified by the modified AC-DC hybrid IEEE-33 bus system.