Transformer is one of the most important equipment in the power grid, it is crucial to ensure its normal operation. By taking transformer condition maintenance as theoretical basis, referring to the related literature of State Grid Corporation of China, taking the main transformer of Sanmenxia Hydropower Station as an example to conduct field investigation, collecting related transformer data, Analytic Hierarchy Process （AHP） is used to determine the most sensitive detection method and state quantity for fault reactions of the same type, then...
