Abstract: Correct operation of power equipment is an important guarantee for the safety of power grid operation. When the equipment operation is wrong, a series of safety accidents will occur. The design method of the initial state checking model of the knife switch based on the topology anti-error rules and operation instructions is studied. Based on the anti-error rule of topology in multi-dimension relation, the related relation of equipment in power system is described, and the knowledge base of operation instruction deduction is established. The operation instruction ticket of the initial state of the switch is generated by considering the position relationship between the switch node and the interval through scheduling rules. Based on the operation instructions corresponding to the switch state, the check model is built to judge the implementation of the switch. The experimental results show that the instruction checking time of the model in this paper is less than 0.25 s, and the checking accuracy is greater than 99.7%. The issuing time of the knife switch operation command can be controlled within 0.8 s, and the availability of the operation ticket is greater than 99.5%, which has practical effect.