Abstract: In order to implement load reallocation in cascading failure networks,a dynamic reallocation strategy combining both local and dynamic network information is proposed.In this strategy,the weight is computed according to the degree and real-time processing ability of a node,and is used to reallocate load in turn.At the same time,according to a certain proportion,some failure nodes are selected to suspend their function and their load reallocation processes stop accordingly.Simulated results in BA scale-free network,WS small-world network and ER random network show that,under certain parameter conditions,the proposed dynamic reallocation strategy is superior to betweenness distribution strategy and degree distribution strategy because it is more effective in alleviating cascading failure by reducing the overall network load rate and optimizing network's real-time streaming distribution.

Key words: cascading failure, Motter and Lai model, dynamic reallocation strategy, complex networks