Key Technology and Function Realization for Smart Grid

Introduction was made to concepts, main features of smart grid and differences with existing power grid. This paper summarized the key technologies of smart grid, including advanced power grid equipment, parameters measurement, communication technology of smart grid, information management system, smart dispatch, distributed energy connecting-in etc. Analysis was made to the realization of smart grid from four main aspects such as smart control center, smart substation, smart line and management of smart requirements. It is pointed out that smart grid with cleaning, safety, flexibility, economy and friendly performances will be the direction of development for future power grid.