Distribution network voltage stability considering dispersed wind farm

LI Xufeng, XV Guodong, YANG Jing, SHI Liqin

(State Key Laboratory of Wind Power System, Zhejiang Windey Co., Ltd., Hangzhou, Hangzhou 310012, China)

Abstract: According to reactive power problem of wind plant farm under anti typhoon operation, a system model was established. The model was composed of many equipment models: standby power, shunt reactors, power transformers, buried cables and wind turbines equivalent model. Then power parameters of the electric models were calculated, so shunt reactor parameter optimization method was proposed. When the wind turbine was equivalent to the model, some subsystems within the wind turbine (including yaw system, hydraulic system, control cabinet fans, ventilation fans) were taking into account, which had different importance in different working conditions. It uses the neural network learning methods for the best weight coefficient. The results compare between the calculation result with the actual trials ones show that error is very small, so it provides a reference means about selecting wind farm device parameter for future.

Key words: dispersed wind power; doubly fed induction generator (DFIG); reactive power control; voltage stability