Volume 107, Number 6, September 2014
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||16 September 2014|
Modeling of self-healing against cascading overload failures in complex networks
1 School of Reliability and Systems Engineering, Beihang University - Beijing, China
2 Science and Technology on Reliability and Environmental Engineering Laboratory - Beijing, China
3 Beijing Key Laboratory for Cooperative Vehicle Infrastructure Systems and Safety Control, Beihang University Beijing, China
Received: 2 July 2014
Accepted: 22 August 2014
The development of online prognostic and fast-recovery technology promotes the realization of self-healing techniques. Considering the cascading overload failures as one of the major failure modes in real networks, we introduce a model for self-healing against overload propagation in complex networks due to malicious attack. Especially, we study the role of basic quantities (restoration timing and resource) in general self-healing restoration against cascading overload failures in network models of homogeneous (Erdős-Rényi) and heterogeneous (scale-free) networks. We demonstrate how networks during cascading failures can be saved from the brink of collapse by proper combination of both restoration timing and resource. And we find that optimal restoration timing for the model and realistic networks exists at a given restoration resource in the self-healing process.
PACS: 89.75.-k – Complex systems / 89.75.Fb – Structures and organization in complex systems / 05.10.-a – Computational methods in statistical physics and nonlinear dynamics
© EPLA, 2014
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