Small Disturbance Modeling of Motion Equation of 800 kV Converter Station based on I-U Control
The dynamic behavior of the converter station is closely related to the performance of the converter station.Based on the modeling idea of the motion equation,a small disturbance motion equation based on I-U sag control was established.Firstly,the transfer functions of each link in the converter station control system based on I-U sag control were analyzed.Then,each link of the control system was linearized and equivalent,and the small disturbance motion equation was derived.Finally,the simulation model was built.The simulation results show that the characteristic roots of the system solved by the small disturbance motion equation are approximately equal to those solved by the original model,that is,the small disturbance motion equation can analyze the characteristics of the converter station based on the I-U control strategy.
converter stationsmall disturbance motion equationI-U sag control
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