real-time frequency and voltage control of an islanded mode microgrid

In this paper, we investigated the necessity and effects of optimal control methods in the stability and performance of a micro-grid that operates in islanded mode. the micro-gird is consisted of a combine heat and power (chp), a capacitor bank (cb), photovoltaic panel (pv) as power generation sources. in addition, battery and the building electricity and thermal load are placed on the load side. a simple comprehensive model is assumed for each component of the micro-gird and the dynamic behavior of micro-grid voltage and frequency is studied in details. since the micro-grid operates in islanded mode, the fluctuations in the building load act as disturbances and could cause the instability in the voltage and frequency. so it is necessary to design a controller to regulate the voltage and frequency. particle swarm optimization (pso) is used as a method to realize the optimal controller in the micro-grid. simulation results showed the effects of proposed controller on the reduction of voltage and frequency fluctuations.