输电线路零序阻抗测试研究
Research on the Zero-Sequence Impedance Testing of Transmission Line
殷章桃 1王立娟 1蒋超 1李金山 1赵开喜 1贾天同1
作者信息
- 1. 新疆送变电有限公司,新疆乌鲁木齐 832000
- 折叠
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.
Abstract
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Key words
zero-sequence impedance/overhead ground wire/grounding grid/grounding resistance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据