Research on power balance control method of microgrid energy storage unit

Abstract In the isolated island operation of microgrids, affected by different equivalent circuit impedance between distributed generators, traditional droop control cannot evenly divide reactive power borne generators according to line impedance. Therefore, firstly, reasons affecting sharing are analyzed, and then an improved method based on is proposed; that is, time change rate voltage used as variable, a recovery mechanism added controller, in order adjust reciprocal zero steady state, so stabilize voltage. Aiming at problem controller always realize equal distribution power, compensation link suitable for designed eliminate difference improve accuracy distribution. Finally, effectiveness feasibility proposed strategy verified building “wind light storage load” microgrid simulation model MATLAB / Simulink platform.