Hybrid Volt/Var Control Algorithm between Distributed Generation and On-Load Tap Changer for Mitigating Overvoltage in Distribution Network

Abstract

Large penetration of distributed generations into a distribution network can make a reverse power flow that causes overvoltage on the network. This paper studied a hybrid volt/var control algorithm between the on-load tap changer (OLTC) and the distributed generation (DG) to prevent overvoltage on the network. This algorithm is integrated in the central control program at the control center where all the measurement, control and monitoring data of the network are carried out. This algorithm is verified and evaluated through the simulation using the Matlab/Simulink software. The simulation results show the effectiveness of mitigating overvoltage of the hybrid volt/var control algorithm between the OLTC and the DG.

Keywords

• distribution network
• distributed generation
• voltage regulation
• volt/var control
• power quality