Offshore wind turbine generator gearbox fault diagnosis method and device based on knowledge graph

The invention relates to an offshore wind turbine gearbox fault diagnosis method based on a knowledge graph, and the method comprises the steps: carrying out the structural processing of the expert knowledge of an offshore wind turbine gearbox fault, and obtaining an expert database as a data source; extracting data knowledge features of the expert database based on a preset extraction model; performing knowledge fusion according to the extracted data knowledge features, and constructing a domain knowledge graph on a set graph database platform; and deploying a database query language and a client tool, so that a user inputs a query instruction of the database query language based on the client tool, and outputs a corresponding offshore wind turbine generator gearbox fault diagnosis result according to the query instruction. According to the scheme, the knowledge picture can be constructed based on the graph database by effectively utilizing the existing expert knowledge, so that the gearbox fault can be quic