Reactive voltage emergency control method in concentrated grid connecting area of wind power plant

The present invention discloses a centralized wind farm grid area reactive voltage emergency control method, belonging to the field. The present invention comprises collecting electrical information, in situ situation determination voltage, integrated voltage situation determination sub-regions, the regional coordination control decision, reactive support capability table, electrical association table, centralized control and local control region. Situation situ determination voltage used to accelerate the operation speed of the local control, regional control center determines that the reactive power and the voltage supply and demand trends in the region through an integrated voltage situation to select the appropriate control strategy, based on the electrical association table to define effective reactive GGSN range, then the dynamic sort of dynamic reactive power support capability of reactive sources within an effective range according to the reactive power support capability table, select the appropriate regulatory sequences control node and a source of reactive power. The present invention can solve the wind farm centralized grid area of ​​no more coordination between the power source control issues, enhancing controllability and timeliness of reactive voltage emergency control.