Wind farm grid-connection technology method and system with rapid power regulation capability

Abstract

Disclosed is a wind farm grid-connection technology method with rapid power regulation capability, including: collecting grid-connection point current information and voltage information through a collection module, and calculating line power information according to the current information and voltage information; and inputting the line power information into a control module, setting a grid-connection point frequency dead zone threshold in the control module, and comparing the line power information with the grid-connection point frequency dead zone threshold by the control module. The method can improve the overvoltage, undervoltage (or frequency) ride-through capability of each wind turbine, avoid forming serious power disturbance when a single fault occurs, reduce system voltage fluctuation, and realize smooth regulation of system voltage. Continuous and smooth regulation of active power can be achieved when participating in the primary frequency modulation of the power grid system.