An intelligent static switch based on embedded system and its control method for a microgrid

The static switch is used to connect a microgrid with the utility grid. The main function of the static switch is for a microgrid to shift automatically between grid-connected and intentional islanding operation modes. Based on the analysis of the opening, closing and re-closing condition of the static switch, this paper proposes a multi-agent based control method for the static switch. According to this method, an intelligent static switch system based on embedded system is designed. The thyristors are used in this intelligent static switch main circuit and a ARM embedded system is used in the controller, realizing the integration of intelligent switch measurement, control, protection, and display functions.