Controller design and parameter optimization of aggregated thermostatically controlled loads for frequency regulation

摘要

In this paper, a sliding-mode controller of aggregated thermostatically controlled loads is designed to track the automatic generation control signal in ancillary service markets. To improve the tracking performance, we optimize the boundary layer of the sliding-mode controller by the parabola interpolation optimization algorithm. Simulation results demonstrate that the parabola interpolation optimization algorithm is an efficient method to find the optimal boundary layer, and the proposed controller with optimal boundary layer can reduce the tracking errors for frequency regulation service in power grid.