Impact of Virtual Oscillator Control on the instantaneous properties of VSC output voltage in distorted island grids
Challenge and objective
Synchronization in island electrical grids dominated by power electronics is challenged by the absence of a grid reference to follow, lack of inertial sources and the usual lack of communication among the units.
Work performed
This paper investigates the instantaneous properties of voltage and frequency of Voltage Source Converters (VSCs) when they are controlled by Virtual Oscillator Controllers (VOC) in a distorted island grid.
Significant results
The results provide convincing evidence for the adoption of a more complex controller as the VOC in island grids that will naturally be more vulnerable to voltage distortions.
The results encourage further explorations into other potential benefits of VOC in island grids
The new approach to synchronize in cases where the classical droop control fails
Impact for distribution system innovation
Topologies currently challenging seem to be possible to solve with the new technique.
