Abstract:In order to ensure the safe and stable operation of the power grid system and strengthen the fine management level of the State Grid Corporation, the application of the new generation IT technology in the field of the Internet of Things, represented by the large power data, can effectively solve the problems of data acquisition, storage and processing, and excavate the potential value in the depth of the massive power data. Information. This paper analyses the characteristics and development trend of large power data in the power Internet of things, introduces the remarkable advantages of Apriori algorithm in dealing with large power data. By using Apriori algorithm to deal with the typical application of large data in the power Internet of things, optimizes grid control at all levels, and constructs a flat structure and functional modules. The flexible architecture of system configuration improves the automation level of production, operation, dispatch and management of power grid in an all-round way, and makes the system run steadily in the best state, thus improving the level of data mining, management and interactive sharing operation, and further improving the efficiency of production operations and the ability of management prediction, so as to make further decisions for the company. Policy deployment provides strong data technology support.