摘要
提出了一种基于线路运行介数的过负荷脆弱性评估方法。该方法从电网络理论出发,首先推导了线路电流共享因子,定义线路运行介数,在此基础上评估过负荷脆弱性。该方法不仅考虑了网络拓扑结构对脆弱性的影响,同时还考虑了系统运行方式对脆弱性的影响,克服了复杂网络模型中潮流仅按最短路径流动的缺陷,物理意义明确,且符合电力系统的实际情况。IEEE39节点测试系统仿真结果验证了评估方法的正确性与合理性。
An operation betweenness based method to assess overloaded lines is proposed. Based on electrical network theory, firstly the branch current sharing factors are deduced; then the operation betweenness of transmission line is defined; finally, on this basis the overload vulnerability of transmission line is assessed. In the proposed method, the impacts of both topological structure and operation modes of power network on vulnerability are considered for the assessment. The physical meaning of the proposed method is determinate and conforms to actual condition of power system, and this method avoids the defect in the complicated network model that the power flows only flow along the shortest path. The correctness of the proposed assessment method is verified by simulation results of IEEE 39-bus system.
出处
《电网技术》
EI
CSCD
北大核心
2012年第6期47-50,共4页
Power System Technology
基金
国家重点基础研究发展计划项目(9 7 3项目)(2009CB219704)
国家自然科学基金项目(50907021
50837002
50920105705)
高等学校学科创新引智计划(111计划)项目(B08013)
中央高校基本科研业务费专项资金项目(11MG01
09QX64)~~
关键词
线路电流共享因子
运行介数
过负荷脆弱性评估
脆弱割集
branch current sharing factor
operationbetweenness
assessment on overload vulnerability
vulnerability cutset
