计及动作安全裕度的节点电压脆弱性评估  

Nodes vulnerability assessment to power grid based on action security margin

作　　者：李杨[1] 刘俊勇[1] 朱国俊[2] 杨可[2] 魏震波[1] 方涛[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065 [2]四川省电力公司,四川成都610061

出　　处：《电力系统保护与控制》2010年第8期10-14,共5页Power System Protection and Control

基　　金：国家重点基础研究发展计划(973计划)项目(2004CB217905)

摘　　要：针对电力系统安全问题,定义了节点动作安全裕度指标,结合传统节点电压脆弱性评估指标,对预想事故下的节点电压脆弱性进行分析,建立了计及动作安全裕度的节点电压脆弱性评估指标。通过对IEEE14、IEEE30母线系统的仿真,结果表明节点事故动作安全裕度的引入部分改变了传统节点电压脆弱度的排序,与传统节点电压脆弱性评估结果相比,更全面考虑了事故发生概率以及事故保护作用和故障操作对节点脆弱性的影响,提高了不同事故下节点电压脆弱性的评估精度,验证了该方法的和合理性与有效性。On the basis of the existing research of vulnerability, an index of nodes contingency action security margin is defined for the security assessment of the power system. By combining the index of nodes contingency action security margin with the assessment of the nodes vulnerability, a new index of the nodes vulnerability assessment to power grid based on action security margin is proposed, to assess the nodes voltage vulnerability result of expected contingency. Simulation results on IEEE 14 and IEEE 30 testing systems indicate the effectiveness of the proposed vulnerability assessment method, considering more comprehensive the relay protection, by comparing with the index of nodes voltage vulnerability only considering nodes voltage margin.

关 键 词：电压裕度 动作安全裕度:节点电压脆弱性 脆弱性评估 脆弱性评估指标 

分 类 号：TM712[电气工程—电力系统及自动化]