发展演化的复杂电力网络鲁棒性分析  

Robustness Analysis of Complex Power Grids in Evolution Process

作　　者：冯乾[1] 马天琳 齐程 朱红路 姚建曦 亢楠[1] 施辉伟[1] 梁俊霞[1] 

机构地区：[1]云南电网北京能源新技术研究发展中心,云南电网公司,北京100084 [2]新能源电力系统国家重点实验室,华北电力大学,北京102206

出　　处：《现代电力》2013年第6期16-20,共5页Modern Electric Power

基　　金：中国南方电网有限责任公司项目(K-YN2011-100)

摘　　要：应用复杂网络理论,结合电力系统实际,以电气介数定义节点初始负荷,建立了连锁故障模型,用归一化故障规模、平均连通性水平和加权网络效率等指标评估小世界电网发展演化过程中鲁棒性的变化情况。分析结果表明:随着网络容量的增加,小世界电网的鲁棒性增强,但当网络容量达到一定值后,增加的容量对小世界电网鲁棒性影响较小;随着小世界电网的发展演化,节点之间的联系增强,其整体鲁棒性也增强。因此在规划和设计电力系统时,应结合实际情况科学合理地确定电网的容量,还可参考小世界电网的发展演化方式,得到鲁棒性强而造价低的电网。Based on the complex network theory and real power system,the initial loads of buses are defined with the electric betweenness,the cascading failure model is built,and the robustness of the small-world power grid in evolution process is evaluated based on such indexes as the normalized avalanche size,the average connection level and the weighted network efficiency.The results show that the robustness of the small-world power grid will be enhanced with the enlarging of network capacity,and the influence of increasing network capacity on the robustness of the smallworld power grid is small when network capacity reaches a certain limit value.In addition,the links between buses and robustness are enhanced with the development and evolution of the small-world power grid.So during the planning and designing phase,the network capacity should be determined scientifically and rationally by combing with real operation status,and the power grid with strong robustness and low cost can be designed by referencing the developing and evolving mode of the small-world power grid.

关 键 词：复杂网络 发展网络 电气介数 连锁故障 鲁棒性 

分 类 号：TM711[电气工程—电力系统及自动化]