Time-varying load redistribution method for cascade failure of logistics network based on load capacity nonlinear model

Abstract

The invention discloses a time-varying load redistribution method for the cascade failure of a logistics network based on a load capacity nonlinear model. The method comprises the steps of 1, establishing a logistics network topological structure model, and determining the initial load and the node capacity of each logistics network node; 2, selecting any node in that topology structure model of the logistics network to invalidate the any node; 3, aft any node fails, carry out load redistribution on that node after the cascade failure of the logistics network according to a load redistributionstrategy with time-varying consideration; Step 4, when the redistributed neighboring node reaches the failure condition, the step 3 is carried out again, the cascading failure redistribution strategyis carried out to redistribute until all the distributed nodes are no longer invalidated, and when the redistributed neighboring node reaches the effective condition, the cascading failure ends.

Description

technical field [0001] The invention relates to the technical field of logistics network invulnerability, in particular to a time-varying load redistribution method for logistics network cascading failures based on a nonlinear model of load capacity. Background technique [0002] As people rely more and more on the logistics industry, logistics technology has transformed from basic services to smart logistics and big data analysis. The logistics system can be regarded as a logistics network composed of logistics nodes and various lines connecting logistics nodes, and the research on the invulnerability of logistics networks based on complex network theory has gradually attracted people's attention and made some progress in recent years. [0003] At present, in the field of logistics network research, the research on the network model of logistics network based on complex network theory all defines the capacity and initial load as a linear relationship, that is, the linear mo...

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Problems solved by technology

[0007] The second object of the present invention is to use the nonlinear load capacity cascading failure model to define the load capacity relationship of the logistics network, so as to solve the problem of the difference between the load capacity linear model and the real logistics network, so as to more accurately describe the non-linear relationship between load and capacity in the actual network. linear distribution

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