Power grid data management system

The invention discloses a power grid data management system, and relates to the technical field of block chains, block chain nodes corresponding to different regions are deployed in advance based on a dispatching center, and for each block chain node, the system comprises a data chaining module, a data subscription module, a data query module and a data maintenance module; the data chaining module is used for counting the updated power grid data into the current block chain node and broadcasting the updated power grid data to other block chain nodes when updating operation is performed on the power grid data in the local database; the data subscription module is used for synchronizing newly-added power grid data in newly-added blocks in other block chain nodes to the block chain node subscribing the newly-added power grid data; the data query module is used for querying power grid data in the block chain nodes; and the data maintenance module is used for carrying out maintenance operation on the data structur