Study on emergency disposal processes of urban rail transit with Fully Automatic Operation system based on time Petri net

Recently, the Fully Automatic Operation system has gradually become the mainly used train operation control system in urban rail transit. Its higher operation efficiency have has won more attention and application. However, due to the lack of operation experience of the fully automatic operation system and the conservative safe operation ideas of the operation managers, there is no accurate operation management emergency plan for the fully automatic operation system. Most of the emergency plans follow the way under the non-automatic operation system, resulting in the train emergency efficiency under emergencies not reaching the expected level. Taking a real door fault event as a case, this work analyzes and models the emergency process under this case based on time Petri net, and simulates and calculates different emergency schemes combined with MATLAB, to provide methods and ideas to help find and establish more efficient emergency plans suitable for the operation of fully automatic operation system. The simulation results show that compared with the emergency schemes of manual fault handling, the schemes combined with the automatic fault handling mode of the fully automatic operation system can effectively shorten the emergency time. And even considering that the automatic mode of the system has a higher failure rate, the probability that the emergency time of the automatic processing scheme is shorter than the expected time is greater.