Aiming at the problems such as complex scheduling mechanism, high quality requirement of post personnel and high cost of system practical operation training of medium pressure air system in large wind tunnel group, the dynamic scheduling job training simulation mechanism modeling based on time automata is implemented.Based on the hybrid system theory, an extended time automaton model suitable for medium pressure air scheduling in large wind tunnel groups is proposed. Based on the first-come, first-served strategy, queues for resource application and unit work are constructed, and core mechanism models such as scheduler and local actuator are established, which solves the problems existing in prior art such as extensive operation mode and high energy and material consumption caused by frequent start-up of large compressor units. UPPAAL tool is used to verify the model, and satisfactory results are obtained.The results show that the establishment of the model not only provides an effective means for the staff to master the equipment structure principle and accumulate practical operation experience, but also lays a foundation for the establishment of wind tunnel test scheduling simulation system and the reasonable and effective implementation of wind tunnel dynamic job training.