南方电网技术2017，Vol.11Issue(7)：78-83,6.DOI:10.13648/j.cnki.issn1674-0629.2017.07.012
架空输电导线交流电阻的实测方法研究
Study on Measurement Method of AC Resistance of Overhead Transmission Line
摘要
Abstract
Besides the conductor's structure, AC resistance is also affected by external environmental factors.In order to study the in-fluence of all these factors, a test method to measure the AC impedance characteristics of a conductor is studied and the experiment platform is set up in this paper.AC impedance is designed to be measured by the outside ampere method in this experiment system, the current waveform is measured and restored by a hollow Rogowski coil and a followed integrator.A loop voltage equation is established by the time signals of the voltage drop and current of the conductor under test.The AC resistance of the conductor is identified with the Least Mean Square ( LMS) estimation algorithm, and AC/DC resistance ratio is obtained consequently.The results of experimental study on six kinds of conductor show that the developed test platform is suitable for measuring AC resistance of conductors, the LMS estimation algorithm can identify the AC resistance effectively.The method of reducing external self-induction of a conductor in a loop to improve the accuracy of measuring is also discussed.关键词
输电导线/交流电阻/外自感/最小二乘法Key words
transmission line/AC resistance/external self-inductance/least mean square ( LMS)分类
信息技术与安全科学引用本文复制引用
王国利,刘磊,李斌,刘良帅,王璐,罗勇芬..架空输电导线交流电阻的实测方法研究[J].南方电网技术,2017,11(7):78-83,6.基金项目
南方电网公司科技项目(CSGTRC-WYKJ00000016).Supported by the Science and Technology Project of China Southern Power Grid (CSGTRC-WYKJ00000016). （CSGTRC-WYKJ00000016）
