Abstract
The start of the smart grid program will drive significant changes of grid operation, management, customer service and social energy use patterns. Informatization as the Smart Grid “four modernizations” breakthrough feature, its importance is distinguished. The important feature, trends, construction direction of smart grid informatization will be the power companies and the IT industry issues of common concern. This article outline the construction contents of smart grid and analysis the informatization technology position in the smart grid and demand for informatization of smart grid construction. And on this basis, analyze the smart grid informatization construction system, and shows the contents of informatization construction from three different dimensionalities: the information hierarchy, power industry chain and business type. Finally, describe the contents of informatization construction and business application from five dimensionalities: data collection layer, data transmission layer, data analysis layer, information integration layer, and information showing layer.