A Novel Adaptive Droop Control Strategy for DC Voltage in AC/DC Hybrid Distribution Network

Abstract

AC/DC hybrid distribution network has attracted considerable research interest in recent years, and the coordinated control of multiple VSCs is a key issue. This paper proposes a novel adaptive droop control strategy based on DC voltage deviation and power imbalance, which ensures the DC voltage brief and small over-limit during transient process and no steady-state deviation, with the power margin of the system is amplified as well. Case study and simulation are performed based on the MATLAB model of a three-terminal AC/DC hybrid distribution network system to demonstrate the effectiveness and superiority of the proposed adaptive droop control.