摘要： 针对智能电网中连锁级联故障的问题,从复杂网络的角度,提出一种基于电网拓扑结构和物理特性的连续级联故障仿真模型。根据电网中线路的有功潮流值将电网抽象为加权网络,并在不同的移除策略下进行动态仿真模拟级联故障的发生,采用网络效率作为衡量网络整体性能的指标。实验结果表明,边权越大,移除边对电网鲁棒性的影响越大,但移除网络中某条边或某几条边,会导致网络的鲁棒性大幅下降,随着耐受性参数的增大,网络的鲁棒性增强,并趋于稳定。

关键词: 复杂网络, 智能电网, 级联故障, 鲁棒性, 边移除

Abstract: To solve the problem of cascading failures in smart grid,this paper proposes a continuous cascading failure simulation model base on the network topology and physical characteristics.The smart grid is abstracted into weighted network according to the active power flow value of the grid line,and carry out dynamic simulations of cascading failures under different removal strategies with using network efficiency to measure the overall performance of the network.The research shows that the larger the edge weight,the greater the impact of the removal of the edge on the power grid,but the removal of a certain edge or a certain number of edges in the network lead to a substantial decline in network robustness.With the increase of the tolerance parameter,the robustness of the network is enhanced and stabilized.

Key words: complex network, smart grid, cascading failure, robustness, edge remove

中图分类号: 

• TP391