Abstract
According to the request of utilizing renewable energy resources such as photovoltaic generation systems, more and more inverter-based generators will be installed into a power system. In the circumstances, stabilization of the grid becomes important, especially in a small-scale power system called as a microgrid. The authors have developed a converter control scheme which enhances the synchronizing torque of the grid by adjusting its output voltage phase. In this paper, the effectiveness of the proposed control is verified in various situation in a microgrid model. The results were compared with a similar control that adjusts output power according to frequency. In particular, this paper reveals that the proposed control is more effective when it is equipped to a large number of distributed generators with small capacity. In addition, it is proposed and verified how to enable an intentional islanding the microgrid.
https://ror.org/044vy1d05 
