Distributed Interactive Reactive Power and Voltage Control for AC/DC Hybrid Distribution Network

In this study, a distributed interactive reactive power and voltage control (RPVC) using finite time consensus is proposed to enhance the efficiency and reliability of an AC/DC hybrid distribution network (HDN). By using the disturbed secondary voltage control with finite time consensus, the reactive power interaction between AC and DC subnets is reached, and also the coordination among multiple droop-controlled inverters in AC subnet is realized. Additionally, the proposed control ensures an accurate reactive power sharing, avoiding the problem of reactive power circulation among multiple inverters, and further improves the voltage quality. An AC/DC HDN with multiple distributed generators (DGs) is established in PSCAD/EMTDC, and the effectiveness and adaptability of distributed interactive voltage control and reactive power sharing strategy between AC and DC subnets are verified under various operating conditions.