基于分岔理论的HVDC系统静、动态特性对比分析  

The Contrastive Analysis of Static and Dynamic Feature of HVDC System Based on Bifurcation Theory

作　　者：张美霞[1] 杨秀[1] 陈鸿煜[1] 舒海莲[1] 

机构地区：[1]上海电力学院电力与自动化工程学院,上海200090

出　　处：《华东电力》2012年第8期1334-1337,共4页East China Electric Power

基　　金：国家自然科学基金项目(50977055);上海市自然科学基金项目(10dz1203100);上海市教委科研创新重点项目(10ZZ114)~~

摘　　要：应用分岔理论分析了一个HVDC系统的动态电压稳定性,分析了不同控制方式下HVDC电压稳定性与短路比SCR的关系,并与传统基于静态分析方法得出的电压稳定指标进行了对比分析,指出了两者之间的联系。研究结果表明,通过静态方法分析得出的HVDC系统临界失稳点就是分岔研究中HVDC系统的鞍结分岔点,并对应HVDC系统的静态电压失稳,但是在一定运行方式下,HVDC系统将出现Hopf分岔,只有通过动态分岔分析才能得到。In this paper, Bifurcation theory is applied in voltage stability analysis of a HVDC system, the relation of voltage stability for various HVDC control modes with SCR is studied in detail, and the result is compared with the traditional static voltage stability analysis of HVDC, and the relation between them is obtained. It can be seen that the critical power/voltage stability point of HVDC with static analysis is the SNB point of HVDC with bifurcation analy- sis. But Hopf bifurcation will occur in certain operation status, which can only be obtained by bifurcation analysis. Key words：HVDC system, voltage stability, Hopf bifurcation, SNB bifurcation, VSF（ Voltage stability Factor）

关 键 词：直流输电系统 电压稳定 HOPF分岔 鞍结点分岔 电压稳定因子 

分 类 号：TM71[电气工程—电力系统及自动化]