AC/DC系统电压稳定性的鞍结分岔分析  

Saddle-Node Bifurcation Analysis of Voltage Stability of AC/DC Power Systems

作　　者：庄慧敏[1] 肖建[1] 

机构地区：[1]西南交通大学电气工程学院,四川省成都市610031

出　　处：《电网技术》2008年第8期29-34,共6页Power System Technology

基　　金：国家自然科学基金资助项目(60774057);高等学校博士学科点专项科研基金资助项目(20060613003)~~

摘　　要：采用新的微分代数方程模型和降阶直接法计算鞍结分岔点,减少了分岔点的计算量。这使鞍结分岔分析方法可应用于直流线路较多的交/直流系统。为判别系统发生的失稳模式,还引入了相关因子法。22节点交/直流系统算例验证了所提出的鞍结分岔分析方法的有效性。Due to high computational complexity and complicated mathematical model, not many research results of applying bifurcation theory to voltage stability analysis of AC/DC power system are reported. By use of a new differential algebraic equation （DAE） model and direct method of reduction, the authors calculate the saddle-node bifurcation （SNB） point and the calculation amount is reduced. Thus the analysis method of SNB can be applied in AC/DC power system that involves more DC branches. To discriminate the instability mode, the relevant factor theory is adopted. Case study of a 22-bus AC/DC power system validates the effectiveness of the proposed SNB analysis method.

关 键 词：电压稳定 微分代数方程(DAE)模型 降阶直接法 相关因子法 鞍结分岔(SNB) 

分 类 号：TM712[电气工程—电力系统及自动化]