Frequency Oscillation Damping in Hybrid Microgrids Include Fosil and Renewable Energy Sources Using Fuzzy Logic Based Controller

Increases the penetration of small production units as Distributed generation in the form of microgrid with Changes in power system. The presence of Distributed generation and microgrids in the power system, despite an economic and environmental benefits, to add new problems to power system. Some of these problems can be named frequency oscillation in possible events such as drastic changes in load in the power system. In the case of islanding work of the microgrid, due to lack of backup power, intensity and scope of the oscillation and instability of the microgrid is far more likely. Therefore addressing the stability of the microgrid frequency of these elements is important. Due to the use of renewable energy sources and low inertia microgrids, at the slightest disturbance, the basic parameters, including frequency will be affected. In practice, frequency control is normally carried out by proportional-integral-Derivative controller. Also, is required energy storage resources for system stability and power injection during consumption peak hours the system is facing a shortage of power and is high the imbalance between production and consumption. The aim of the dissertation, is frequency control in microgrid using dynamic controllers and energy storage resources. In this study, proposed fuzzy logic PID controller that, sine-cosine optimization algorithm (SCA) is used for raise efficiency the controller