The integration characteristics analysis and practice of grid forming wind turbine

In consequence of the accelerated expansion of wind power in China, power systems comprising a significant proportion of wind energy have been established in the "Three North Regions." It is an inevitable consequence that this will result in a reduction in the synchronous support capacity, which in turn will jeopardise the safe and stable operation of the local power system. In this context, grid forming control has emerged as an effective solution, offering grid support capabilities comparable to those of synchronous machines. Accordingly, a small signal model for grid-forming wind turbines is initially constructed. Thereafter, the broadband dynamic characteristics of grid-following/grid-forming control wind turbines are analysed based on eigenmode. Subsequently, the stability and active support performance of grid-following/grid-forming control wind turbines are elucidated through root locus and amplitude-frequency characteristic curves. Ultimately, the simulation, hardware-in-the-loop test, and field test are provided to demonstrate the transient and steady-state characteristics.