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- W616525895 abstract "This paper studies the impact of system frequency deviations on the operation of fixed speed induction generators used in wind turbine generation systems (WTGS). It presents an analytic method to predict the angular speed, torque and current during and after a frequency disturbance. The proposed method can be used to evaluate the operation limits of the WTGS during frequency deviations. Several authors have treated the impact of voltage dips on fixed speed and variable speed WTGS and analyzed voltage and transient stability during those events. Literature reports the impact of WTGS on the system frequency, inertia response of different wind turbine technologies and comparison between inertia response of single fed and double fed induction generators. WTGS can also have control strategies for system frequency regulation. During a frequency variations, the operation point of wind turbine is changed due to the modification of the machine reactances and the slip. To prevent inappropriate operation of wind parks, they are equipped with a frequency relay that disconnects it after a severe frequency disturbance. In power systems with high wind power penetration, those frequency deviations can provoke a massive wind farms disconnection that can lead to power system oscillations. Modern WTGS usually are variable speed WTGS. Nevertheless, fixed speed WTGS were installed in large proportions in power grids over the last years. Therefore it is still a matter of interest to study the interaction of fixed speed WTGS with power system during frequency deviations. This work presents an analytic method for the calculation of angular speed, torque and current for WTGS before, during and after a frequency disturbance. Tabesh and Iravani treat a small-signal dynamic model of a fixed-speed (induction machine based) wind farm connected to an electrical power system and Thiringer and Luomi introduce a dynamic induction machine model representations for frequency variations. Both papers are not treating the impact of frequency deviations on the operation point of the WTGS." @default.
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- W616525895 date "2010-04-01" @default.
- W616525895 modified "2023-10-17" @default.
- W616525895 title "Performance of Fixed Speed Wind Turbines under System Frequency Deviations" @default.
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