Load Shedding Application within a Microgrid to Secure its Is landed Mode of Operation

This paper presents the simulation results and analysis related to the response of a microgrid system, specifically the generators inside the microgrid, towards an accidental overload condition that will require some load shedding action. A microgrid overload can occur due to various reasons ranging from poor load schedule, inadequate switching of circuits within the microgrid, outage of one or more generators inside the microgrid, illegal load connections by some low voltage consumers, etc. It was observed that among the main factors that determine the survival of the microgrid during its transition from the grid connected mode to the islanded mode of operation are the size and type of the load connected (passive or dynamic load), the length of time that the unexpected load is connected as well as the provision of speed and voltage regulators to the generators.