基于P、Q网分解的有向加权拓扑模型下的电网脆弱性分析  

Vulnerability analysis of electric power network under a directed-weighted topological model based on the P-Q networks decomposition

作　　者：魏震波[1] 刘俊勇[1] 李俊[1] 韩卫恒[1] 潘睿[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065

出　　处：《电力系统保护与控制》2010年第24期19-22,29,共5页Power System Protection and Control

基　　金：国家自然科学基金项目(50977059)~~

摘　　要：针对拓扑模型下的电网脆弱性分析问题,提出了基于P、Q网分解的电网有向加权拓扑模型。在分析电网物理与运行特性的基础上,对有功网络和无功网络进行分解建模,给出两种网络拓扑模型下线路方向选取与线路权重大小的计算方法,由此应用复杂网络理论对电网脆弱性进行分析。IEEE-14节点系统算例结果表明:在不同网络拓扑模型下,单元脆弱强度存在显著差异,有功与无功网分解建模更符合电网拓扑模型特征;与其他电网脆弱分析结果相比,有向加权拓扑模型对电网脆弱环节有较高辨识精度,验证了模型的有效性。As to the vulnerability analysis of electric power network under the topological model,a directed-weighted topological model based on P-Q networks decomposition is proposed in this paper.Based on a physical and operational characteristic analysis of electric power network, active and reactive network decomposition model is conducted, and the computations of direction and weight of lines under two network topological models are given.Then based on complex networks theory the vulnerability of electric power network is analyzed.Results of a numerical example show that there is a distinct difference of vulnerability value in different topological units, and active and reactive networks decomposition model is more suitable for the feature of power network topological model.Comparing with other vulnerability evaluation models,the proposed model is more precise and effective.

关 键 词：电网脆弱性 拓扑模型 P、Q网分解 有向加权拓扑网络 复杂网络理论 

分 类 号：TM711[电气工程—电力系统及自动化]