Cascading failures in smart grid: Joint effect of load propagation and interdependence
Open Access
- 7 December 2015
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Access
- Vol. 3 (99), 2520-2530
- https://doi.org/10.1109/access.2015.2506503
Abstract
The smart grid mainly suffers from two types of cascading failures: 1) interdependence cascading failure and 2) load propagation cascading failure. The former one happens due to the interdependence between power grid and communication networks. The latter one is caused by the load propagation in the single power grid. A tiny failure leads to the simultaneous occurrence of these two cascading failures. In this paper, we study the system robustness by considering the interdependence and load propagation. First, we develop a mathematical tool to analyze the load propagation in single network. Then, a percolation-based method is proposed to calculate the remaining fractions of survivals after the cascading failures stop. We estimate the node tolerance parameter T (the ratio of capacity to initial workload) threshold T' c , below which the entire system may suffer from the cascading failure. The effect of interdependence on T c ' is also studied, where lower Tc' is required for the less compact interdependence. We prove that the system performance approaches to the upper bound once the tolerance parameter T → ∞. Our analysis indicates that the fraction of survivals in the power grid is always greater than that in communication network, although the initial failure occurs in the power grid. The extensive simulations validate our mathematical analysis, and demonstrate that the relation between the number of initial failures and tolerance parameter threshold is super-linear.This publication has 18 references indexed in Scilit:
- Balancing System Survivability and Cost of Smart Grid Via Modeling Cascading FailuresIEEE Transactions on Emerging Topics in Computing, 2013
- The Power Grid as a complex network: A surveyPhysica A: Statistical Mechanics and its Applications, 2013
- Robustness of network of networks under targeted attackPhysical Review E, 2013
- Robustness of a Network of NetworksPhysical Review Letters, 2011
- Component Criticality in Failure Cascade Processes of Network SystemsRisk Analysis, 2011
- Do topological models provide good information about electricity infrastructure vulnerability?Chaos: An Interdisciplinary Journal of Nonlinear Science, 2010
- Attack structural vulnerability of power grids: A hybrid approach based on complex networksPhysica A: Statistical Mechanics and its Applications, 2009
- Cascading failures in power gridsIEEE Potentials, 2009
- Attack vulnerability of scale-free networks due to cascading failuresPhysica A: Statistical Mechanics and its Applications, 2008
- Tolerance of scale-free networks against attack-induced cascadesPhysical Review E, 2005