输电线路零序阻抗测试研究  

Research on the Zero-Sequence Impedance Testing of Transmission Line

作　　者：殷章桃 王立娟 蒋超 李金山 赵开喜 贾天同 YIN Zhangtao;WANG Lijuan;JIANG Chao;LI Jinshan;ZHAO Kaixi;JIA Tiantong(Xinjiang Power Transmission and Transformation Co.,Ltd.,Urumqi,Xinjiang 832000,China)

机构地区：[1]新疆送变电有限公司,新疆乌鲁木齐832000

出　　处：《自动化应用》2024年第3期201-203,共3页Automation Application

摘　　要：输电线路零序阻抗的突降会直接影响线路接地距离保护和零序方向保护的工作可靠性。针对线路参数测试过程中发现的零序阻抗偏大问题,从架空地线的接地方式以及变电站的地网接地电阻分析了零序阻抗的测试,并对线路进行了排查以及参数的复测,最后给出了线路参数零序阻抗测试方法步骤以及测试建议。The sudden drop in zero-sequence impedance of transmission lines will directly affect the reliability of line grounding distance protection and zero-sequence direction protection.In response to the problem of high zero-sequence impedance discovered during the testing process of line parameters,an analysis was conducted on the testing of zero-sequence impedance from the grounding method of overhead ground wire and the grounding resistance of the substation's grounding network.The line was investigated and the parameters were retested.Finally,the steps and testing suggestions for the zero-sequence impedance testing method of line parameters were provided.

关 键 词：零序阻抗 架空地线 地网 接地电阻 

分 类 号：TM726[电气工程—电力系统及自动化]