Abstract
With the development of wind power and large-scale grid connection, more and more new challenges are brought to the safe operation of power system. It is of great significance to analyze the damping characteristics and stability of low-frequency oscillation of wind power grid connected system, so as to improve the permeability of wind power and new energy generation. This paper based on the main physical structure and linearization model of DFIG, building the grid connected system and its linear model, analyzes the influence of the damping characteristics of power system after the wind power grid connected by using the damping torque method, and verifies the change of the damping characteristics of the system after the wind power grid connected by using the power factory simulation software. It can be seen that the influence of the permeability and control parameters of wind power on the low-frequency oscillation of power system under different operating conditions, has a more clear guiding significance for the safe and stable operation of power system.
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