Micro grid operation controller based on ADRC

Abstract

With the maturity and development of the micro grid technology, it should be widely used in practice, and it becomes more and more crucial that micro grid should cooperate friendly with the power grid. Consequently, we put forward a new micro grid running control method based on ADRC, which realized the cooperation with stability and smoothness under the several running states, such as grid-connected mode to island mode, island mode to grid-connected mode, and load disturbance changing mode. Some simulation was done to verify this thought and showed the better control effect than PID controller in the inspect of no phases control of the voltage and the current, and the power waved in ±0.1 Hz, which satisfied the requirements of the International Standard. Moreover, the stability of the third-order ESO in second-order ADRC is proved with Lyapunov stability theory.