南方电网技术2017，Vol.11Issue(5)：36-40,5.DOI:10.13648/j.cnki.issn1674-0629.2017.05.006
克服变电站空心电抗器磁场干扰的接地系统设计
Grounding System Design to Reduce Magnetic Interference of Air-Core Reactor in Substation
李宁 1温才权 1宋永佳 1李佳涵 2赵世林 2周凯 2舒勤2
作者信息
- 1. 南方电网超高压输电公司梧州局,广西梧州543002
- 2. 四川大学电气信息学院,成都610065
- 折叠
摘要
Abstract
To suppress the magnetic interference on grounding system caused by air-core reactors,two kinds of schemes to reduce the induced current of grounding system are proposed,one is to adopt independent secondary grounding body,the other is to adopt radial grounding grid structure.In this paper,the current of secondary cable shielding layer and grid grounding network is measured in a 500 kV substation.According to the reverse-voltage theoretical model and on site experiment results,the effect of adding independent secondary grounding body for shileding layers of different lines is analyzed.Futhermore,a 3D electromagnetic model is built to simulate and compare the anti-interference effect for radial grounding grids.The emulational data and experimental reasults show that by using secondary grounding body,more than half of the induced current can be reduced,and the radial grounding grids under reactor can suppress the magnetic interference effectively.关键词
空心电抗器/磁场干扰/接地系统/感应电流Key words
air-core reactor/magnetic interference/grounding system/induced current分类
信息技术与安全科学引用本文复制引用
李宁,温才权,宋永佳,李佳涵,赵世林,周凯,舒勤..克服变电站空心电抗器磁场干扰的接地系统设计[J].南方电网技术,2017,11(5):36-40,5.
