Abstract: Recently, Digital New Infrastructure, which is driven by digital technology and energy internet concept, has been increasingly mentioned and studied, and has brought new challenges to the digital transformation of the existing dispatch automation system. Considering the needs of the scale of data storage, the complexity of data processing and the diversification of data services, this paper puts forward the system architecture of power grid regulation big data platform. And on this basis, the key technologies, such as multi-source regulatory data integration and fusion, hierarchical unified storage of heterogeneous databases, data warehouse design for data objects, asset management of regulation data, and Big data algorithm engine, etc. are studied to achieve full-service and full-scene grid regulation data collection, processing and asset management. The proposed technical scheme provides storage resources, data services and algorithm support for the application analysis of dispatching cloud.