Operation Control Strategy of Improved Master-slave Control for Microgrid

With consideration of improving the stability of the microgrid in different operating modes, this paper proposes a coordinated control strategy with improved droop control are used as the master control unit, and the other distributed power sources use PQ control as the slave unit to build an improved master-slave control microgrid system model. The main parameters and operation characteristics of the microgrid system are analyzed in depth by designing off-grid switching, sudden load increase and main control micropower failure conditions. This method is more efficient than the existing methods because it can meet the needs of the system under different operating conditions, realize the automatic power adjustment and the system frequency voltage recovery, and has good adaptability and stability.