Abstract：An optimization control strategy based BPA for doubly fed wind turbines under asymmetric fault

ridethrough was proposed to address the issue of low accuracy of control strategies under asymmetric faults，in

order to obtain more accurate fault control model parameters for doubly fed wind turbines under asymmetric fault

conditions. Firstly，the structure of the electromechanical transient simulation model for wind turbines was

analyzed，and the topology of the electromechanical transient model was clarified. Then，the fault crossing control

principle of wind turbines was clarified，as well as the fault crossing control strategy of wind turbines. The control

strategy of wind turbines was optimized through formula calculation and data verification. Through error analysis

of simulation results，it compared whether the optimized strategy control has a more consistent control method，and verified the accuracy of the optimized control strategy.

      Key words：doubly fed wind turbine；asymmetric fault；electromechanical transient model；low voltage ride

through（LVRT）