Abstract:The data of production and operation from the main grid have many problems, such as great difference, difficulty in unification, insufficient data integration and sharing, etc., resulting in low data utilization rate and insufficient application,so it cannot meet the requirements from the operation personnel.To solve these problems,a system design scheme based on big data is proposed.Based on the analysis of data characteristics, some functions are designed, including data storage, mapping analysis of equipment defect, equipment fault repair process based on crowd sourcing thought, transmission equipment health assessment, transmission network lean management.The functions are used to distributing store,correlation analysis and deep mining the data. Besides, the software architecture of system is designed based on the big data platform and the data storage principle is clarified. The system is oriented to production and operation personnel, aiming to provide equipment maintenance, lean management service, etc.