基于短路比的交直流输电系统谐振频率研究  

Resonant frequency of AC/DC Transmission System Based on Short Circuit Ratio

作　　者：王鹏飞[1] 张英敏[1] 王渝红[1] 李兴源[1] 陈虎[1] 陈宝亮[1] 

机构地区：[1]四川大学电气信息学院,成都610065

出　　处：《华东电力》2012年第11期1961-1964,共4页East China Electric Power

基　　金：国家高技术研究发展计划(863计划);国家自然科学基金重点项目(51037003);四川省科技厅基础应用计划(2010jy0018)~~

摘　　要：将短路比与单直流系统谐振频率的关系推广到多直流系统中,详细分析了交流系统等值阻抗与谐振频率的关系,表明在单直流或多直流系统中,其谐振频率主要受本直流所联交流系统阻抗的影响。采用PSCAD进行频谱分析,验证了所提出的多直流系统谐振频率计算方法的有效性。This paper expands the relationship between short circuit ratio and resonant frequency of single DC system to muhi-DC system. The correlation between AC system equivalent impedance and resonant frequency is analyzed in detail. The results show that in a single or multiple DC system, the resonant frequency is mainly affected by the con- nected AC system impedance. The PSCAD-based frequency analysis verifies the effectiveness of the proposed resonant frequency algorithm for muhi-DC system.

关 键 词：并联谐振 弱交流系统 谐振频率 短路比 等值阻抗 系统稳定性 

分 类 号：TM712[电气工程—电力系统及自动化]