ABSTRACT
SG has self-balancing capacity, sagging features and large inertia, which are conducive to stable operation and load power distribution. This provides a new idea for micro-grid inverter control. The new inverter exhibits SG characteristics, and has double functions of power control and frequency and voltage regulation. Therefore, the control theory of conventional power system, such as primary and secondary regulation, can be applied in micro-grid conveniently, maintaining the microgrid voltage and frequency stability. When the line parameters are different, each inverter can achieve accurate proportional load sharing, and electrical fluctuation in the dynamic adjustment process is small.
