Real-Time Line Drop Compensation Control Method of Step Voltage Regulator on Distribution Lines with Distributed Generation

Generally, the voltage on long distribution lines is regulated within the permissible range by step voltage regulator (SVR). SVR controls the line voltage through line drop compensation (LDC) method. However, when large-scale distributed generation (DG) is introduced into distribution lines, it is difficult to maintain the line voltage within the permissible voltage range due to bi-directional power flow. Therefore, this paper proposes a new LDC method by compensating reference voltage in real time to solve the problem, considering DG capacity and connection location. It is verified through PSCAD/EMTDC software tool and simulations.