HVDC谐波不稳定现象研究  

Research on Harmonic Instability Caused by HVDC Converter

作　　者：王云辉 郝巍 李兴源[2] 

机构地区：[1]云南省电力设计院,云南昆明650011 [2]四川大学电气信息学院,四川成都610065

出　　处：《现代电力》2009年第4期26-31,共6页Modern Electric Power

基　　金：国家重点基础研究专项经费项目(2004CB217907);国家自然科学基金项目(50595412);南方电网技术研究中心项目

摘　　要：直流输电引起的谐波不稳定是指在换流站附近有扰动时谐波振荡不易衰减甚至放大的现象,它能导致换流站交流母线电压和直流电流严重畸变致使直流系统不能正常运行。本文分析了谐波不稳定现象产生的机理,结合频率扫描法指出CIGRE benchmark模型在模拟谐波不稳定方面的不足,调整参数后成功模拟了谐波不稳定现象的发生。The harmonic instability caused by HVDC means that when there is a disturbance in the converter station, the harmonic resonance doesn＇t attenuate or even becomes magnified. It can make the AC bus voltage of converter station and DC current distort seriously, which results in the failure of HVDC＇s normal operation. The mechanism of harmonic instability is analyzed, and the shortage of CIGRE benchmark model using frequency scanning method is discussed. The harmonic instability is simulated successfully after adjusting its parameters.

关 键 词：直流输电 谐波不稳定 频率扫描法 CIGRE模型 参数调整 

分 类 号：TM712[电气工程—电力系统及自动化]