突发事件下关键基础设施应急保护策略研究

针对多系统耦合多层级分布的关键基础设施网络,将关键基础设施节点划分为关键节点集合和普通节点集合。首先,考虑任意两节点之间的关联耦合关系。以系统总效能最大化为优化目标,建立预算资金约束下的三次混合整数规划数学模型,决策各节点是否被保护及其被保护程度。其次,设计有效的混合遗传算法对模型进行求解。不同算例设置下的数据实验表明,该算法在求解精度和时间上均表现优异,可有效优化此类耦合系统应急保护问题。

Research on Emergency Protection Strategies of Critical Infrastructure under Urgent Event

Based on the critical infrastructure network with multi-system coupling and multi-level distribution, this paper divides the nodes of critical infrastructure into key node and ordinary node. With the interdependency between every two node taken into consideration, under the condition of capital constraints, the question about which node to protect and the degree of protection is crucial to maximize the system utility of the whole network. A model of three order mixed integer programming is proposed to solve that problem. The genetic algorithm is applied to solve the model and the result shows that this model performs well in accuracy and timeliness.