Adaptive Virtual Synchronous Generator Control Strategy with Inertia Supporting Ability Assessment

The frequency response of the power system is changing because of the inverter-based generator connection. To depict a more realistic frequency characteristic, an adaptive virtual synchronous generator (VSG) control strategy including the inertia supporting assessment index is proposed. The virtual inertia in VSG can be adjusted according to the frequency response process. And the droop coefficient is changed proportionally. Besides, the inertia supporting assessment index F
d
is introduced to judge the FR results so that the operator can choose the optimal control parameter sets. The simulation results verified the accuracy and applicability of the proposed method. The method can also help to research on the frequency response and inertia estimation in the power system with high proportion power electronics.