Energy storage system control strategy to minimize the voltage and frequency fluctuation in the microgird

Abstract

The goal of this paper is to solve the voltage and frequency fluctuation problem of microgrid in the standalone operation. The proposed main idea is to use super capacitor to prevent large voltage and frequency fluctuation during the transient and use the battery to maintain the long-term voltage and frequency stability. The control strategies for the renewable energy sources, storage system, load and power quality improvements devices in three different operation modes “grid-connected”, “standalone”, and “transient of islanding and reconnection” have been proposed. A sample microgrid system is used to verify the effectiveness of the control strategies.