摘要
采用数值计算方法分析了垂直分层土壤结构中的接地系统接地电阻测量时测量电极的布置规律。分析了接地系统布置在不同位置时 ,不同方向布置测量线路所要求的电压极的正确位置。分析表明 ,更加科学、合理的测量方法应当是在了解接地系统附近的土壤分层结构情况的基础上 ,选择合理的电流极的引线方向及电压极的布置位置 ,才能得到比较准确的测量结果 ,才能做到对测量结果与真实值之间的差别心中有数。
Accurate measurement of grounding resistance of substation is a basic guarantee to ensure the secure operation of power system. The arrangement rules of measuring electrodes, which are used to measure the grounding resistance of grounding system in vertical layered soil, are analyzed by numerical calculation method in this paper. When the grounding system is arranged in different site the demanded correct sites for potential poles under different directions are analyzed. The analysis shows that for the measurement of grounding resistance of substation a more scientific and suitable measuring method is to choose rational direction of lead wire of current poles and the arrangement site of voltage poles after knowing the structure of soil near the grounding system. Thus, not only the more accurate measured results could be obtained, but also the deviation between the measured results and real grounding resistance could be known fairly well.
出处
《电网技术》
EI
CSCD
北大核心
2000年第10期36-39,共4页
Power System Technology
关键词
接地电阻
测量值
变电站
电极布置
垂直分层土壤
grounding system
grounding resistance
measuring lead wire
vertical layered soil
substation
