Reference Standard for Harmonics and Nonsinusoidal Power Measurements

被引:6
|
作者
Wijesinghe, W. M. S. [1 ]
Park, Young Tae [2 ]
机构
[1] Univ Sci & Technol, Taejon 305350, South Korea
[2] Korea Res Inst Stand & Sci, Taejon 305340, South Korea
关键词
Terms-Dual-channel sampling; electrical power; harmonics; PRECISION-MEASUREMENT; ALGORITHM; WINDOWS; SYSTEM;
D O I
10.1109/TIM.2011.2108618
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, a method for the measuring the harmonic amplitude and power of nonsinusoidal signals, which utilizes two synchronized high-precision digital voltmeters, is described. The harmonics of voltage and current waveforms were computed from digital samples and compared with the values obtained from thermal converters. The software developed, which is based on the fast Fourier transform algorithm, computes current and voltage harmonics with uncertainties of less than 10 x 10(-6) of fundamental. The uncertainty of the power harmonics is 17 mu W/VA. The system can be used as a reference system for calibrating harmonic analyzers at power frequencies.
引用
收藏
页码:2242 / 2247
页数:6
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