Abstract

With a higher wind power penetration level, the power system faces more challenges in the frequency control due to the system inertia reduction. Many papers have investigated the inertia control from variable speed wind turbines generators. In this paper, a detailed comparative analysis of inertia control methods for a permanent magnet synchronous generator-based wind turbine generator is presented. Three representative inertia control methods, including constant droop control method, time-variable droop control method, and kinetic energy-based droop control method, are described in detail, and the performance of these methods are analyzed with EMTP-RV generated data. The results show that the methods with dynamic control coefficient have a great improvement on frequency response and prevent the secondary frequency dip, effectively.

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