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Frequency is an important factor for power system harmonics measurement. Accurate spectral analysis relies much on the correct identification of frequencies of the measured signals. In this paper, several commonly used methods for power system stationary and time-varying harmonics measurement are reviewed and compared according to the aspect of frequency identification. Recommendations for adopting...
This paper discusses the difficulties related to interharmonic measurement and characterization. A simple FFT-based signal processing tool is proposed to analyze time-varying interharmonics. This tool is generally effective in determining interharmonic frequencies and magnitudes for many signaling applications, overcoming some of the issues related to interharmonic measurement. The problem of interharmonic...
Limiting low frequency interharmonic distortion and voltage fluctuations is considered. Reference is made to recent activities in the standard review process and to research literature regarding this specific topic and related issues. Some recalls on the main low frequency interharmonic voltages effects are reported. Then, the problems related to the combined use of limits and assessment procedures...
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