Study on Transient Stability of Power System with Doubly Fed Wind Turbine Connection at the Supply End
A wind turbine equivalent impedance model based on static reactive power compensator was used to study the impact of doubly fed wind turbines at different capacity ratios,locations,and connection methods on the stability of the power angle of the high permeability wind power supply system.Derive the electromagnetic power characteristics of the synchronous machine in the single-ended power transmission system,correct the power angle curve of the synchronous generator,use the equal area rule to determine the changes in acceleration and deceleration areas during system faults,and obtain the impact of using a new equivalent model on system transient stability under different factors.Finally,the correctness of the theoretical analysis was verified through simulation software.The results indicate that replacing synchronous generators with wind turbines of equal capacity is beneficial for system transient stability,while direct access to wind power is not conducive to system transient stability.The closer the wind turbine is connected to the system side,the more stable it is.The new equivalent model enhances the transient stability of the system.
万方数据
维普
