Comprehensive state evaluation method and system of power grid equipment based on digital twinning

The invention discloses a comprehensive state evaluation method and system for power grid equipment based on digital twinning. The method comprises the following steps: acquiring basic data operated by a physical entity in real time; collecting content association information on an entity association data platform in real time; carrying out fusion processing on the basic data and the content association information based on an ontology model, forming equipment comprehensive state data, and constructing a digital twin model; constructing an evaluation tree knowledge structure for the equipment comprehensive state data based on the digital twinborn model; performing atlas analysis and event analysis based on the evaluation tree knowledge structure to obtain comprehensive state evaluation and fault prediction information; and based on the comprehensive state evaluation and fault prediction information, outputting a maintenance demand prediction and maintenance strategy. On the basis of data integration, knowledg