摘要
针对大型地网接地电阻测量误差的主要来源及特点提出了双矢量分析法 ,它可以有效地消除外界干扰和测量引线间互感的影响 ,减小接地电阻的测量误差 ,保证测量结果的准确性。该方法适用于工频电流的试验条件 ,因此便于应用较大的电流。现场实测和模拟试验结果均表明 ,即使在不太大的工频试验电流下 ,这种新方法的测量结果也达到高的精度。
This paper regards to the problem of measuring grounding resistance of large earthing grid, studies the main source and characteristics of measuring error, then presents a double-vector analysis method which can remove the effects of external interference and mutual induction between measuring lines, and therefore, reduce the measuring error, and insure the accuracy of result. This method is suitable for some condition where the frequency of test current is power frequency, thus greater current could be generate easily. The field measurement and simulation test show that even if the operating current is not so great, accurate result could be obtained.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2002年第7期19-21,共3页
High Voltage Engineering
关键词
测量
接地电阻
双矢量分析法
接地网
large earthing grid earthing resistance anti-interference mutual induction between lines double-vector analysis method
