中文摘要：

提出了一个基于无标度网络的含能量耗散和扩容功能的级联故障模型，通过计算机模拟发现网络中节点的能量耗散和容量扩充是驱动系统向自组织临界状态演化的重要因素．此外，为了减小网络级联故障的规模，对网络中的一些关键节点进行了控制，研究结果显示只要对网络中极少数的关键节点进行控制就能大大降低整个网络的故障规模．

英文摘要：

A cascading energy dissipation and failure model based on scale-free network is proposed, in which eapability expansion are considered. By computer simulation we find that both energy dissipation and capability expansion are important factors that drive system evolve toward the self-organized critical status. In addition, in order to reduce the cascading failure size in the network, protective measures are taken on some key nodes. The results show that as long as a few key nodes of the network are protected the failure size of the network will be reduced greatly.