SVC/TCSC和HVDC之间交互影响分析  

Analysis of the Interaction Between SVC/TCSC and HVDC

作　　者：孙帮新[1] 

机构地区：[1]中国南方电网超高压输电公司,广州510620

出　　处：《南方电网技术》2013年第6期66-70,共5页Southern Power System Technology

基　　金：国家自然科学基金项目(51107042)~~

摘　　要：SVC和TCSC属于两种不同连接类型的FACTS装置,它们与HVDC系统之间可能的交互作用是人们所关心的。以3机9节点交直流系统作为试验系统,通过改变电气距离和直流传输功率,采用稳态的和动态的相对增益矩阵(RGA)方法分析串联型TCSC和HVDC、并联型SVC与HVDC两种交互影响,找出出现RGA峰值的系统敏感频率。研究结果表明,TCSC对直流功率的变化较为敏感;SVC/TCSC与HVDC交互影响随着电气距离的增大和直流传输功率的减小而减小。。SVC and TCSC are two types of FACTS devices with different connections, and it is concerned that there may be interac- tion between SVC/TCSC and HVDC. Taking [EEE 3-machine 9-bus AC/DC hybrid system as a test system, and adopting the steady- state and dynamic-state relative gain array （RGA） method, this paper analyzes the interaction between series TCSC and HVDC as well as that between the parallel SVC and HVDC under the conditions of various electrical distances and DC transmission powers, and finds out the FACTS sensitive frequency in which the RGA reaches a peak value. The results show that the TCSC device is more sensi- tive to the change of DC power. The interaction between SVC/TCSC and HVDC becomes weak as the electrical distance being large and the DC power decreasing.

关 键 词：柔性交流输电 高压直流输电 静止无功补偿器 静止同步补偿器 相对增益矩阵 

分 类 号：TM721.1[电气工程—电力系统及自动化]