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DOI: https://doi.org/10.15407/techned2016.04.074

SPECIAL FEATURES OF ENERGY CONSUMPTION AND QUALITY OF ELECTRICITY IN LOW-VOLTAGE NETWORKS OF INDUSTRIAL AND UTILITY ENTERPRISES

Journal Tekhnichna elektrodynamika
Publisher Institute of Electrodynamics National Academy of Science of Ukraine
ISSN 1607-7970 (print), 2218-1903 (online)
Issue № 4, 2016 (July/August)
Pages 74 – 76

 

Authors
M. Zagirnyak, V. Prus, А. Nikitina
Kremenchuk Mykhailo Ostrohradskyi National University,
20, Pershotravneva str., Kremenchuk, 39600, Ukraine,
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Abstract

Special features of the processes of energy consumption and conversion in low-voltage electric networks 0.4 kV are researched for conditions of different relative value and types of load. The ranges of variation of the nonlinear distortion coefficient. A sufficient set of informative parameters for assessment of the degree of particular consumers influence on the quality of electricity is substantiated. It includes the coefficient of nonlinear distortions, separate spectral components of instantaneous power signal and coefficients, characterizing energy conversion special features, calculated according to p-q-r-theory of instantaneous power. The ways of application of the obtained results to assessment of power efficiency of operation of particular consumers as a part of a system of electricity technical record in low-voltage networks are considered. References 6, figures 4, table 1.

 

Key words: low-voltage network, asymmetry, nonlinear distortions, instantaneous power, p-q-r theory.

 

Received:    27.01.2016
Accepted:     17.05.2016
Published:   21.06.2016

 

References

1. Application of neural networks to solution of forecasting problems. Available at: http://neural-networks.ru/ (Rus.)
2. Prus V.V., Nikitina A.V. The calculation of power consumption and an estimation of quality of electrical energy in industrial mains with a low voltage. Tekhnichna Elektrodynamika. Tematychnyj vypusk Problemy suchasnoi elektrotekhniky.  2010.  Part 2.  P. 61–66. (Rus.)
3. Rodkin D.I. The comment to the theory of power processes with polyharmonic signals. Zbirnyk naukovykh prats Kirovohradskoho natsionalnoho tekhnichnoho universytetu. 2004.  Vyp. 15.  P. 10-18. (Rus)
4. Shidlovskiy A.K., Zharkin A.F. High harmonics in low voltage industrial mains.  Kyiv: Naukova dumka, 2005.  210 p. (Rus.)
5. Kim H., Blaabjerg F., Bak-Jensen B., Choi I. Instantaneous power compensation in three-phase systems using p-q-r theory.  IEEE Trans. Power Electronics.  2002.  Vol. 17.  No 5.  P. 701-710. DOI: https://doi.org/10.1109/TPEL.2002.802185
6. Zagirnyak M., Prus V., Nikitina A. Method of low-voltage electric network power processes control and their quality assurance on the basis of p-q-r theory. Acta Technica.  2013.  Vol. 58.  No 4.  P. 367–380.

 

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