Method for generating fault diagnosis rule of hydroelectric equipment based on similar fault case set

A method for generating a fault diagnosis rule of hydroelectric equipment based on a similar fault case set comprises the following steps: Step 1, establishing a fault case library, and grouping all fault cases according to a fault mode to form a plurality of similar fault case sets; step 2, initial symptom weight is carried out; 3, when the fault case is newly added, the symptom weight in the fault case set of the same kind is automatically updated and corrected; 4, when the hydroelectric equipment breaks down, the symptom credibility is calculated; step 5, calculating the similarity by adopting a weighted average mode; and step 6, determining a fault condition according to the obtained similarity so as to carry out fault diagnosis, and generating a corresponding fault processing measure so as to protect the hydroelectric equipment. Various fault modes and symptoms in the aspect of hydroelectric equipment are integrated, various fault problems are accurately standardized, and the problem that the diagnosis r