Control center technologies for smart grid are surveyed. Flowing rule of power flow， information flow and capital flow and mutual influence between both of them are analyzed. It is pointed out that a best way to implement smart grid is to adjust and control information flow wisely so as to improve the way of power flow and capital flow. Based on the information flow， frame structure of dispatch and control system for smart grid is investigated from aspects of the information hierarchy， the information mutual interation between hierarchies and the coordination between informations with different time scales. The future changes and innovations of application softwares in smart grid control centers are prospected from aspects of the system design with 3-dimensional（spacial， temporal and objective） coordination， phasor measurement unit（PMU） based transient management system（TMS） in control center and system-level close loop control， etc. Discussions on the control center technologies for smart grid adaptable to ultra high voltage（UHV） transmissions are also given.