The Impact of Wind Characteristics on the Wind Turbine Generator

In order to analyze accurately the factors and rules influencing the power oscillation of a grid-connected wind turbine generator system, this paper propose a wind power generation system and simulate under different type of wind speed condition for power oscillation analysis. Firstly, the mathematical models of the grid-connected wind turbine and wind speed models are presented. Secondly, according to different type of wind speed disturbance case, simulation on the active power oscillation of the WTGs is investigated. Considering gust cause the most serious power oscillation, the active power oscillations are compared under different gust disturbed frequencies. Finally, simulation on the interaction between WTGs is also investigated. The compared results shown that under the same amplitude perturbations, the gust cause the most serious power oscillation; the power oscillation is related to the frequency of gust; the gust disturbance in a single WTG unit have some impact on the others.