Adaptive Substation Load Restoration under Extreme Hot Weather Considering the Flexibility of Air Conditioners

Load restoration fitting to the change of load amount, available power and outdoor temperature is an important measure to enhance power system resilience under extreme hot weather. A multi-time scale substation load restoration method considering active control of air conditioners is proposed for adaptive restoration. First, a framework of adaptive load restoration is formulated to coordinate the longtime scale whole process scheme making and short-time scale active air conditioners control. Second, an optimization model considering the whole process of substation load restoration is established to make feeder switch schemes to improve load restoration efficiency from the perspective of a long-time scale. Third, model predictive control is adopted to realize the active control of air conditioners from the perspective of a short-time scale to fit the continuously changed load amount, available power and outdoor temperature during restoration. The simulation results demonstrate that the proposed substation load restoration method can make schemes adaptively with better restoration benefit under extreme hot weather.