高压电器2017，Vol.53Issue(8)：187-192,6.DOI:10.13296/j.1001-1609.hva.2017.08.031
水平分支对方框带射线型接地体冲击特性的影响
Influence of Horizontal Branch on Impulse Characteristics of Box Grounding Device with Radiation
肖磊石 1黄佳瑞 2李谦 1杨潇 2饶章权 1周文俊2
作者信息
- 1. 广东电网有限责任公司电力科学研究院,广州510080
- 2. 武汉大学电气工程学院,武汉430072
- 折叠
摘要
Abstract
The grounding resistance is an important index to judge the performance of grounding devices.In order to reduce the impulse grounding resistance of box grounding device with radiation,the simulation experiment of different grounding devices is applied in the condition of two-layer soil,the influence of horizontal branch on impulse characteristics and dispersion distribution of different grounding bodies is studied.The results show that,in case of single horizontal grounding device,when the branch is 120° and three sections structure,the resistance reducing effect of the modified grounding body is the best.Compared with the normal box grounding device,three sections structure with a horizontal branch and branch be 120° can reduce the inductance,the discharge current of the end of the branch is increased,the discharge of the spark is more intense,so that the average percentage of resistance reducing is up to 10％.Adding the horizontal branch is effective method to reduce the impulse grounding resistance.关键词
冲击接地电阻/火花效应/模拟试验/屏蔽效应/降阻Key words
impulse grounding resistance/inductance effect/simulation experiment/shielding effect/resistance reducing引用本文复制引用
肖磊石,黄佳瑞,李谦,杨潇,饶章权,周文俊..水平分支对方框带射线型接地体冲击特性的影响[J].高压电器,2017,53(8):187-192,6.
