Comprehensive study on fault-ride through and voltage support by wind power generation in AC and DC transmission systems

This paper exploits the impact of different Low Voltage Ridethrough (LVRT) methods and equipment on both the wind
energy elements and the grid including wind turbine/farm
ability to provide reactive compensation, and maintain
controllability during faults. The potential of using SFCL as
an alternative LVRT equipment is preliminary studied. The
paper also exploits some severe scenarios that could face a
multi-terminal HVDC network. The influences of AC faults
and control errors are examined. Results show limited
deviations between the adopted LVRT methods. The wind
turbine has to contribute to the stability of the AC collection
grid of the wind farm, but it does not influence the grid, as
both are decoupled through the multi-terminal HVDC grid.
The implemented test systems and the examined events are
developed in Matlab/Simulink and DIgSILENT.