A Dynamic Load-Shedding Technology based on IEC 61850 in Microgrid

Load-shedding is an effective control strategy for realization of the power supply-demand balancing. The balancing supply and demand is a crucial issue for power system stability. In this paper, based on IEC 61850 protocols, a supervisory control and data acquisition (SCADA) platform of dynamic load-shedding (DLS) technology in microgrid (MG) is built. Integrating of SCADA and IED (intelligent electronic device), the proposed technology can fetch the information of power generation, power consumption, and MG structure in real time to evaluate the appropriate amount of load to be shed. The proposed DLS technology has been verified on the simulated MG in Qimei Island, Penghu, Taiwan. Compared with conventional methods, the simulation results verify that the proposed DLS provides the fast and precise load-shedding in different loading scenarios. The proposed method has the superiority in reducing the amount of load-shedding and shedding time.