Abstract: With the development of power industry in the big data era, smart grid and big data technologies applied in the grid are facing enormous challenges and opportunities. An efficient and stable scheme for safe operation of smart grid is required to deal with the intricate and massive power equipment and the ever-changing information data. WebGIS is a geographic information system extension technology based on Web technology, and it is also a distributed system that realizes information exchange between servers and clients through Internet. It is of wide access range, low cost, convenient operation and high computing load. After explaining the current situation and development trend of the smart grid, the application of WebGIS in big data visualization of smart grid is studied and its feasibility in real cases is tested.The results show that this scheme is more accurate in locating the information in the smart grid, and economic in both development cost and maintenance cost, compared with the traditional grid graphics system.

Key words: big data, WebGIS, smart grid, visualization, distributed system