不同耦合方式和耦合强度对电力-通信耦合网络的影响  

Influences of Various Coupled Patterns and Coupling Strength on Power-communication Coupled Networks

作　　者：董政呈 方彦军[1] 田猛[2] 

机构地区：[1]武汉大学动力与机械学院,武汉430072 [2]武汉大学电子信息学院,武汉430072

出　　处：《高电压技术》2015年第10期3464-3469,共6页High Voltage Engineering

基　　金：国家自然科学基金(50677047;61201168);湖北省自然科学基金(2010CDZ051)~~

摘　　要：为寻找增强电力-通信耦合网络鲁棒性的方法,指导智能电网的建设,以直流潮流优化模型为基础,考虑通信网的调度功能,提出一种电力-通信网络概率失效模型。应用边攻击方式研究了耦合方式和耦合强度对电力-通信网络鲁棒性的影响,并对失效概率p0进行了分析。仿真结果表明,内在自相似耦合方式能很好地提高电力-通信耦合网络的鲁棒性,降低故障规模,以介数-度数(B-D)耦合方式最佳。同时,网络间失效概率p0对小规模具有无标度特性的电力-通信耦合网络的连锁故障不会产生影响。此外,对于不同耦合强度,平均负荷损失都随通信边失效比例的增加呈现出先上升后下降的趋势,且在通信边失效比例较小时,耦合强度的增加能有效降低连锁故障的规模。To look for methods for improving the robustness of power-commtmication coupled networks and guiding the construction of the smart grid, we proposed a cascading model for the power-communication networks with failure prob- ability based on DC power flow optimization model and the scheduling function of communication network. We conducted edge attacks to study the effects of coupled patterns and coupling strength on the robustness of pow- er-communication coupled networks, and analyzed the effects of failure probabilityp0 of nodes between the two networks Simulation results show that the inner inter-similarity coupled links can significantly improve the robustness of pow- er-communication coupled networks, and reduce the failure scales, especially the betweenness-degree （B-D） coupled pattern. Meanwhile, there is no effect of p0 on the cascading propagation of small-scale power-communication networks with scale-free property. Furthermore, results also show that a similar phenomenon can be found that the average load loss of different coupling strength has a downward trend after rising first with the increasing failure ratio of communication edge. High coupling strength can effectively reduce the scales of failures when the failure ratio of communication edges is small.

关 键 词：电力-通信耦合网络 边失效 直流潮流 连锁故障 耦合方式 失效概率 耦合强度 

分 类 号：TM76[电气工程—电力系统及自动化] TM73