Simulation Study on Cascading Failure of Multimodal Transport Network

الملخص EN

Cascading failure in multimodal transport network may cause huge economic loss and social impact, which has gradually attracted public attention.

In view of the coupling effect of nodes in multimodal transport network and the higher complexity of cascading failure process, the concepts of node correlation degree and node cooperation degree are proposed to characterize the characteristics of the network, and a logit model is introduced to calculate the initial load of nodes.

In the case of ignoring network interruption, we propose two load redistribution methods: local allocation and global-local allocation.

Taking the multimodal transport network in Sichuan–Tibet region of China as an example, the cascading failure effect of multimodal transport network in Sichuan–Tibet region is quantified by sensitivity analysis.

The results show that when the load of the multimodal transport network in Sichuan–Tibet region exceeds the maximum capacity but does not exceed 150%∼170% of the network capacity, the network can still operate normally.

In addition, the nodes in the multimodal transport network should have 0.3∼0.5 scalable space.

In the cascading failure control method, load redistribution based on global-local allocation can minimize the impact of node overload.