Evaluation of Virtual Synchronous Generator Compared to Synchronous Generator

摘要

Virtual synchronous generator (VSG) can be designed to aid the integration of large-scale distribution generation (DG) such as photovoltaic into the power grid. Through this concept, it is plausible for the DG to exhibit the characteristics and behavior of synchronous generators (SG) such as inertia, droop functions and damping. These factors make it possible for the DG to contribute to the control and stability of the power grid. In this paper, VSG model was designed and study was conducted using it in order to demonstrate that the VSG does have quite similar structure to conventional SG. The responses of both the SG and VSG to changes in varying operating conductions are compared and the results presented in this paper. These models are designed and implemented in an electromagnetic transient program (EMTP).