Micro-grid voltage stabilizing and controlling method and system

The invention relates to a micro-grid voltage stabilizing and controlling method and a system. The method comprises the following steps: utilizing a controller of a micro-power to collect voltage value across the bus of the micro-grid in real time; determining voltage fluctuating zone of the bus voltage according to the voltage value and a pre-set voltage fluctuating zone; obtaining a corresponding voltage stabilizing and controlling scheme based on the voltage fluctuating zone and conducting stabilization control to the bus voltage of the micro-grid based on the voltage stabilizing and controlling scheme. The micro-grid voltage stabilizing and controlling method and the system utilize a controller of a micro-power to collect voltage value across the bus of the micro-grid in real time and determinants voltage fluctuating zone of the bus voltage according to the voltage value and a pre-set voltage fluctuating zone. By obtaining a corresponding voltage stabilizing and controlling scheme based on the voltage fluctuating zone, coordination and control can be made to a micro-power, an energy storing system and load so that fluctuating voltage can rapidly restore to a stable state and thus, stabilization control is achieved to the voltage fluctuating of a micro-grid in different ranges.