Modelling and Simulation of Performance of the Microgrid Frequency Stability Control during Unplanned Islanding: The Case Study of Mwenga Hydropower

A grid connected microgrid connects to the at a point of common coupling. Due great inertia which accelerates and decelerates generator when its frequency tends deviate, operates infinity bus. Frequency instability is one major challenges facing during islanding. The power demand variation causes in rotor speed, resulting deviation. can be brought back standard by varying generation match with load. performance stability control system Mwenga hydroelectric has been studied. Through site visitation, status data were collected analysed for model preparation. results study indicate that, islanding, rural electrification project observed subjected imbalance leads instability. Although tries keep nominal maintaining continuous balance between load demand, however still large magnitude overshoot, undershoot longer settling time.