New fast power reserve emulation strategy for VSWT supporting frequency control

With the increasing number of variable speed wind turbines generators connected to the grid, new frequency control strategies need to be developed for them. This paper presents a new fast power reserve emulation controller for... [ view full abstract ]

With the increasing number of variable speed wind turbines generators connected to the grid, new frequency control strategies need to be developed for them. This paper presents a new fast power reserve emulation controller for variable speed wind turbines under power imbalance conditions. It is based on the fast change of their rotor side converter active power set-point, having an over and an underproduction. Simulations are carried out on a typical power system consisting of thermal, hydropower and wind-power plants, considering the power imbalance as a step function. It is implemented in Matlab/Simulink and improves the frequency shift and settling-time found in a previous proposal. Extensive results are included in the paper.