Intelligent maintenance method and system based on big data

The invention relates to an intelligent substation maintenance method and system based on big data. According to the intelligent power transformation overhaul method, a system processing terminal extracts power transformation information data and abnormal data, which do not meet the industrial standard of power transformation equipment, in the power transformation overhaul information data by using a data filtering technology; data characteristics of the abnormal data are extracted; a data analysis model is constructed by using the data characteristics so as to carry out substation maintenanceintelligent detection by using the data analysis model. The intelligent power transformation maintenance system comprises a power transformation information management module, a power transformationinformation interaction module and a power transformation auxiliary maintenance module. According to the invention, the information data acquired by each module can be used for intercommunication andsharing, thereby achieving