Voltage-Frequency Control (v-f) of Islanded Microgrid Based on Battery and MPPT Control

With the development and increasing influence of the use of distributed generation resources, distribution networks have changed from passive networks to active networks. In these new networks, operation on an island will increase both the reliability of the network in the competitive market and the maximum utilization of distributed generation resources. But despite the various benefits, Microgrids with distributed generation resources also have disadvantages. One of the disadvantages is the increasing complexity of control systems, protection systems and operating systems of the global distribution network. In recent research, various methods have been proposed for controlling the Microgrids, especially voltage and frequency control. This paper presents a method for controlling a photovoltaic (PV) system with maximum power point tracking (MPPT) controller and battery storage to provide voltage-frequency (v-f) support in an islanded microgrid. It introduces a new algorithm for MPPT control that offers control strategies, effective coordinated between v-f control in inverter, MPPT control, and battery storage control. Finally, the proposed scheme is implemented on the IEEE 13-bus distribution feeder in islanded mode using MATLAB software, the results of which clearly demonstrate the efficiency of the control methods.