The invention relates to a method for identifying suspected repeating data of electrical equipment, and belongs to the field of electric power engineering and electric power dispatching information construction. According to the method, technologies or functions of phrase breakup, phrase judgment, matching result generation, electric power dispatching naming rules and the like are combined, so that extraction, identification and correspondence of suspected repeating data of electrical equipment of electric power enterprises are achieved, and unified power grid equipment ledger information is established. The phrase breakup technology is used for breaking up long sentences of the electrical equipment into meaningful phrases; the phrase judgment technology is used for judging suspected repeating equipment according to the dispatching naming rules, a power grid public model and equipment types; in terms of the matching result generation technology, a matching list with power stations and substations as unit can be automatically generated by programs according to judgment results of the previous two steps; structuralization of the electric power dispatching naming rules is achieved according to electric power dispatching rules, and phrase judgment is supported by the electric power dispatching naming rules.