Cascading failure model on power grid with energy dissipation and capability expansion
含能量耗散和容量扩充的电网级联故障模型*

A cascading failure model based on power grid is proposed, in which energy dissipation and capability expansion are considered. The computer simulation results show that under the driven of energy dissipation and capability expansion the system can evolve to a self-organized critical status. This model well explained the self-organized critical phenomenon of power system. In addition, the measures for preventing cascading failure are studied. The results show that as far as a few key nodes are under controlled and the proper diverting methods are carried out, the failure size can be reduced greatly.