Abstract: To further promote the transformation of power dispatch control services into intelligent, an object-oriented database established by equipment voltage level, correlation between equipments, and equipment operation status realizes description of regional power grid topology and operation status.Then the automatic inference process of operation ticket based on case-based reasoning algorithm is built under the constraint of dispatch operation rules and equipment operation rules to improve the efficiency of operation ticket approval execution. This method has been applied in practical operation cases, and has achieved remarkable results in improving the efficiency of operation ticket production, approval and execution.