Abstract:

Based on the development goal of smart grid, the function and system structure of smart substation was introduced. The smart substation system was divided into process layer, spacer layer, station control layer and grid-province production management system. Some key technologies for the construction of smart substation was proposed, including primary equipment intelligence, information network and on-line monitoring. Finally, based on the concept of free distribution function of IEC 61850, this paper analyzed and consolidated all sorts of functions of the substation, combined the process layer and the spacer layer of smart substation into the equipment layer, and put forward a intelligent substation system structure which could face the future and adapt to the requirements of smart grid.