电力系统谐波对线路保护的影响分析及抑制措施  

Analysis of the Impact of Harmonics in Power Systems on Line Protection and Suppression Measures

作　　者：袁岳 郭文[1] 杨海 侯小虎[1] 周筱矞 王仕炬 YUAN Yue;GUO Wen;YANG Hai;HOU Xiaohu;ZHOU Xiaoyu;WANG Shiju(Xiluodu Hydropower Plant,China Yangtze Power Co.,Ltd.,Zhaotong 657300,China)

机构地区：[1]中国长江电力股份有限公司溪洛渡水力发电厂,云南昭通657300

出　　处：《水电与新能源》2025年第1期67-71,共5页Hydropower and New Energy

摘　　要：线路保护是通过判定计算阻抗是否落在动作区域而动作,而谐波的产生有可能会造成线路保护发生误动。基于线路距离保护基本原理,结合输电线路模型,分析了电力系统谐波产生的原因,阐述了谐波对线路保护产生的影响,最后通过某电站的线路保护动作实例分析,说明了电力系统抑制谐波的重要性。Line protection action is activated by determining whether the calculated impedance falls within the operating range.While,the generation of harmonics may cause mis-action of the line protection.Considering the basic principles of the line distance protection,the causes of harmonics in power systems are analyzed with the transmission line model.The impact of harmonics on line protection is demonstrated.At last,a practical line protection action case in a power station is analyzed.The importance of harmonic suppression in power systems is illustrated.

关 键 词：线路保护 谐波抑制 稳定运行 计算阻抗 

分 类 号：TM714[电气工程—电力系统及自动化]