With the implementation of the state clean energy strategy， the quantity and scale of wind farms have enormous increase. Because multiple new-style techniques have been advanced， the building of a remote centralized supervisory control and data acquisition（SCADA） system for multi-wind farms is possible. Based on the traditional power dispatching and distribution automation system（PDDAS）， referring to common information model（CIM） and IEC 61400-25 standard， the remote centralized SCADA system for multi-wind farms is developed by improvement and extension of model， data and function of PDDAS. The system has been successfully applied to the Shanghai control center of Yangtze New Energies Development Co. Ltd.