✦ LIBER ✦

A technique of waveform judgment for harmonic analysis on distribution lines

✍ Scribed by Tadao Aizawa

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 433 KB
Volume: 166
Category: Article
ISSN: 0424-7760
DOI: 10.1002/eej.20536

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✦ Synopsis

Abstract

Most general‐purpose analyzers for harmonic analysis on distribution lines are designed to sample the data of one or two power supply periods. In other words, these analyzers process waveforms and display the results based on the assumption that the analyzed waveforms contain no noninteger components, such as subharmonics and interharmonics. When waveforms containing noninteger components are analyzed with these general‐purpose analyzers, the results often indicate components that are not actually present.

This paper proposes a technique of waveform judgment and explains its method of application. The technique allows noninteger components to be recognized in analyzed waveforms from the properties of Lissajous figures, and clarifies the types of components and the time windows necessary for appropriate analysis. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 166(2): 32– 38, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.20536

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