Abstract:With the in-depth development of the digital transformation of the power grid, the era of electric power big data has quietly come, which has also brought challenges to the internal audit of power grid companies. The popularization and application of big data technologies has innovated the audit models. Based on information fusion technology and data mining technology, this paper builds a cloud audit platform for power big data with the characteristics of openness, integration, dynamics, and intelligence to share audit data resources across the entire business field of power grids. With the platform, auditors can obtain all of the business data required for digital auditing timely and accurately, to realize cross-system and cross-business data analysis. They can also build audit analysis models independently to capture doubtful points and screen clues. Through the practical application of the supervision and evaluation model for the whole process of distribution network projects, it has been fully verified that cloud audit can effectively improve the audit efficiency and quality, and has played a positive role in preventing and resolving management risks of power grid enterprise.