Wind turbine generators (WTGs) equipped with grid-forming (GFM) control are increasingly deployed to replace conventional synchronous generators and support grid stability. However, existing GFM control strategies often fail to properly coordinate with the primary frequency regulation requirements that grid operators mandate. This coordination gap can reduce the effectiveness of frequency support and create operational conflicts during grid disturbances.
Researchers have proposed a novel coordination framework that bridges the divide between GFM control and droop-based primary frequency regulation. The strategy establishes precise relationships among three key parameters: the power-tracking coefficient, power set-point, and frequency deviation. This design ensures that wind turbines maintain consistent frequency support within predefined limits while efficiently managing their available power reserves.
A key advantage of the proposed approach is its compatibility with existing control architectures. Rather than requiring a complete redesign of grid-forming controllers, the coordination strategy integrates seamlessly with conventional GFM structures, reducing implementation barriers for grid operators and turbine manufacturers. The method also inherently adapts to variable wind speeds, meaning no recalibration is needed as wind conditions change.
The research demonstrates that WTGs can now participate reliably in primary frequency regulation—the first line of defense when grid frequency deviates from nominal levels—while maintaining appropriate operating points and preserving dynamic performance. This is particularly important as power systems transition to higher renewable penetration, where frequency support from wind resources becomes essential for grid reliability.
Comparative case studies across multiple operating scenarios validate the effectiveness of the proposed strategy, showing superior performance compared to conventional approaches. The findings suggest that with properly coordinated controls, wind turbines can become more active participants in grid support services, reducing reliance on traditional generation and enhancing overall system resilience during frequency disturbances.
