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The paper reports quality analysis and evaluation at 6 - 10-0.4 kV low-voltage distribution grids in Uzbekistan. Power quality frequently does not correspond to the rated value which is largely due to unbalanced phase loading in grids and which also results in increased power loss. The study of the asymmetrical operating modes of the rural distribution networks of 0.4 kV was conducted in three steps: measurement, calculations and analysis of relevant data; providing practical guidelines and finally, implementing instruments to normalize grid operation. Measuring was conducted using certified instrumentation analyzer -MALIKA- designed by authors. The study and analysis of additional power losses as the function of indicators of asymmetrical features of voltage and current in operating 0.4 kV grids reveals that, quality of electric power at grids under investigation, merely does not meet the requirements of the Interstate Standard.

KEYWORDS

Electric Power Quality Indicators, Power Grids, Power Losses, The Method of Symmetrical Components

Cite this paper

Khosiljonovich, K. 2016 Electric Power Quality Analysis 6-10-0.4 kV Distribution Networks. Energy and Power Engineering, 8, 263-269. doi: 10.4236-epe.2016.86025.





Autor: Kholiddinov Ilkombek Khosiljonovich

Fuente: http://www.scirp.org/



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