Quantitative Analysis and Research on Emergency Linkage System Performance Based on Stochastic Petri Net

With the large-scale and centralized of chemical enterprises, more and more attention has been paid to the emergency linkage system of emergencies. Perfect emergency linkage can curb or delay the development of the situation. In order to quantitatively study the performance of emergency linkage system in chemical enterprises, a stochastic Petri net structural model was built based on emergency linkage process and elements. Then, the accessible set is analyzed, isomorphic transformation is carried out in combination with Markov chain and the performance of each link in the emergency linkage action has been analyzed and calculated. Finally, the average working time of the emergency linkage system in completing all scenarios has been obtained. The analysis of the calculation results can be used to optimize the emergency linkage system.