The increasing integration of wind power requires advanced control strategies to maintain stable and reliable grid operation during disturbances. Grid-forming inverters can provide voltage support and improve system strength, but conventional control structures do interact with wind turbine mechanical dynamics and cause oscillations which could further lead to cause mechanical fatigue to the turbine . To address this, the VSM-Split concept is applied, separating the virtual synchronous machine (VSM) and fast voltage control loop from the converter current control loops. The VSM and voltage controller are implemented at the point

of common coupling (PCC), enabling grid-forming behavior while keeping turbines current-controlled.

Two approaches are studied using detailed DIgSILENT PowerFactory simulations of a large-scale wind power plant: a decentralized configuration with individual turbine-level VSMs and a centralized plant-level VSM-Split control coordinated through fast communication. Results show that the centralized approach significantly improves disturbance performance by reducing oscillations, voltage and power deviations, and recovery time. It achieves smooth responses to phase angle jumps and faster damping under power setpoint changes. Reduced oscillatory behavior is also expected to lower mechanical fatigue loads and improve

long-term turbine reliability.