PPA-Tuned PI-PD Controller for a Microgrid in Uncertain Environments

The areas that are out of reach from the grid can benefit with a tiny grid called a microgrid and this can get power from distributed generations. Renewable sources are the main source of power for the microgrids which are very much unpredictable in nature. The problem of frequency instability arises due to a power mismatch between the power-generating units and consumed power. When there is a deficit in power, the storage elements present in the isolated microgrid help to maintain the power and to do so the controller gives the command to various storage units. Therefore, this paper proposed a novel controller for microgrid frequency regulation by using a Parasitism Predation Algorithm (PPA) based PI-PD controller. The performance of the PPA-optimized PID for microgrid frequency regulation is investigated. The superiority of the PPA-based PI-PD controller is compared with those obtained from PPA-based PID, PD-PI controller.