Entropy and coefficient of variation (CV) as tools for assessing power quality
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Nacional de Colombia
2011
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| _version_ | 1876424336759324672 |
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| author | J. H. Estrada |
| author_facet | J. H. Estrada |
| contents | Entropy and coefficient of variation (CV) as tools for assessing power quality J. H. Estrada E. A. Cano-Plata C. Younes-Velosa C. L. Cortés Ingeniería Entropy Wavelets Harmonics Power Quality Magnetic wave This paper presents several concepts and techniques for quantifying electric signal entropy and variability for assessing power quality, showing their irregularities, such as the electrical sine wave which delivers power to industry and homes. The paper will review these concepts and show some magnetic radiated waves measurements taken below 115 KV electricity line circuits in the city of Manizales (Colombia) through non-invasive and indirect measurement of the complexity of the current transported by the supply. Entropy, as an accepted indicator of physical complexity, is proportional to the logarithm of the number of states in a thermodynamic system. Some writers have identified entropy as being system disorder, but this is not completely true. Entropy of information was first defined by Shannon in 1949 and it is applied to many physical events. Entropy has been used for describing the complexity of the magnetic wave radiated by the line in this paper. Furthermore, the magnetic waves¿ spectral and amplitude coefficient of variation (CV) were obtained using a multiresolution wavelet algorithm which measures data distribution dispersion. It is a dimensionless number allowing the variation of magnetic radiated data having significantly different mean values to be compared to a 60 Hz pure magnetic wave as reference. 2011 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64322338007 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.2 Vol.31 |
| format | Artículo científico |
| id | redalyc_64322338007 |
| institution | Redalyc |
| language | en |
| publishDate | 2011 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | Entropy and coefficient of variation (CV) as tools for assessing power quality J. H. Estrada Ingeniería Entropy Wavelets Harmonics Power Quality Magnetic wave Entropy and coefficient of variation (CV) as tools for assessing power quality J. H. Estrada E. A. Cano-Plata C. Younes-Velosa C. L. Cortés Ingeniería Entropy Wavelets Harmonics Power Quality Magnetic wave This paper presents several concepts and techniques for quantifying electric signal entropy and variability for assessing power quality, showing their irregularities, such as the electrical sine wave which delivers power to industry and homes. The paper will review these concepts and show some magnetic radiated waves measurements taken below 115 KV electricity line circuits in the city of Manizales (Colombia) through non-invasive and indirect measurement of the complexity of the current transported by the supply. Entropy, as an accepted indicator of physical complexity, is proportional to the logarithm of the number of states in a thermodynamic system. Some writers have identified entropy as being system disorder, but this is not completely true. Entropy of information was first defined by Shannon in 1949 and it is applied to many physical events. Entropy has been used for describing the complexity of the magnetic wave radiated by the line in this paper. Furthermore, the magnetic waves¿ spectral and amplitude coefficient of variation (CV) were obtained using a multiresolution wavelet algorithm which measures data distribution dispersion. It is a dimensionless number allowing the variation of magnetic radiated data having significantly different mean values to be compared to a 60 Hz pure magnetic wave as reference. 2011 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64322338007 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.2 Vol.31 |
| title | Entropy and coefficient of variation (CV) as tools for assessing power quality |
| topic | Ingeniería Entropy Wavelets Harmonics Power Quality Magnetic wave |
| url | https://www.redalyc.org/articulo.oa?id=64322338007 |