摘要
为了减少输电线路的雷击跳闸率,基于恒流场理论,提出了一种直接利用输电线路杆塔基础进行降阻的新方法。该方法将特制钢筋笼与相应比例的高效防腐降阻剂结合,对杆塔基础进行集中接地。该装置占地空间少,需要土量少,解决了水平射线因受地形限制而降阻困难的问题。其冲击系数小和冲击电阻小的特性,大大提高了线路的耐雷水平以及供电可靠性。实例和实践结果都表明了该方法的可行性及有效性。
To decrease the lightning trip-out rate of transmission line,a new method therefore was put forward to reduce the grounding resistance of transmission tower foundation based on the constant current field theory.This method combined special reinforcing cage with proportional effective anti-corrosion resistance reduction agent to make tower foundation ground tightly,and took up a little space and soil.And all the problems such as reducing grounding resistance by horizontal radial grounding method because of topography were solved.The characteristic of small impulse coefficient and impulse grounding resistance of this device increased the lightning withstand level and power supply reliability of transmission line greatly.Results of instances and practices showed that this method is feasible and validated.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2011年第6期181-184,共4页
Journal of Sichuan University (Engineering Science Edition)
基金
湖南省教育厅科学基金资助项目(09C077)
湖南省教育厅科学基金资助项目(11C0024)
电力系统安全运行与控制湖南省高校重点实验室开放基金资助项目(gxkfjj2010-9)
关键词
山岩地区
杆塔
接地
恒流场理论
rocky region
transmission tower
grounding resistance
the constant current field theory
