电工技术学报2017，Vol.32Issue(3)：27-34,8.
谐波对多馈入直流输电系统换相失败的影响
The Harmonic Effects on Commutation Faliure of Multi-Infeed Direct Current Transmission Systems
摘要
Abstract
The fundamental reason of the commutation failure caused by harmonics is analyzed based on the mechanism of commutation failure.This paper presents a method of voltage time area,meanwhile defines and calculates the commutation failure critical deviation angle and critical proportion coefficient of 5th,7th,1 1 th,13th order dominant harmonic.In addition,the actual example of Shanghai power grid is given,then through equivalent harmonic model and Ward equivalent algorithm of power network,voltage deviation of the DC access point caused by background harmonic and the critical condition of commutation failure can be calculated by Matlab software,all the results are checked by simulation.Finally,conditions of preventing commutation failure caused by harmonic in engineering are proposed.The conclusions have a practical guiding role on planning and operation of AC/DC power grid.关键词
多馈入直流输电系统/谐波干扰/关断角/换相失败临界比例系数/Ward等值Key words
Multi-infeed direct current transmission system/harmonic interference/extinction angle/the commutation failure critical proportion coefficient/Ward equivalent method分类
信息技术与安全科学引用本文复制引用
王玲,文俊,李亚男,刘婷婷,赵国鹏..谐波对多馈入直流输电系统换相失败的影响[J].电工技术学报,2017,32(3):27-34,8.基金项目
国家高技术研究发展计划(863计划)资助项目(2015AA050102). （863计划）
