高压电器2017，Vol.53Issue(5)：14-21,8.DOI:10.13296/j.1001-1609.hva.2017.05.003
电流极与电压极的引线夹角对接地电阻测量精度的影响研究
Research on the Influence of Lead Angle of the Current and Voltage Pole on Grounding Resistance Measurement Accuracy
摘要
Abstract
Grounding resistance measurement is a necessary means to check whether the grounding device can meet the requirements of the regulation.It can avoid the economic loss or accident caused by grounding failure timely.Due to the presence of mutual inductance between the leads,the measuring signal can be interfered,thereby affecting the measurement results.Based on this,the article firstly analyzes the influence mechanism of the mutual inductance between two parallel lines,and derives the additional resistance R caused by the influence of mutual inductance on the line.Then,due to the influence of mutual inductance with the change of the lead angle,the influence of mutual inductance can be converted into the effect of different angles on the measurement results,and the optimal angle value can be calculated by mathematical operation.Finally,setting up the experimental platform and carrying on the experimental verification.The results show that the measurement error can be minimized when the angle between the voltage pole and the current pole closes to 30°,which is beneficial to the analysis and improvement of the measurement accuracy of the grounding resistance tester.At the end of the paper,a briefly analysis is made on the methods of the ground resistance measurement treatment in the case of non-uniform soil.关键词
接地电阻测量/三极法/电压极/电流极/夹角Key words
grounding resistance measurement/three pole method/voltage pole/current pole/angle引用本文复制引用
黄新波,姬林垚,朱永灿,田毅,乔卫中..电流极与电压极的引线夹角对接地电阻测量精度的影响研究[J].高压电器,2017,53(5):14-21,8.基金项目
陕西省重点科技创新团队计划(2014KCT-16) （2014KCT-16）
陕西省协同创新计划项目(2014XT-07).Project Supported by Key Technology Innovation Team Project of Shaanxi Province(2014KCT-16),Collaborative Innovation Project of Shaanxi Province (2014XT-07). （2014XT-07）
