Perspectives of Innovations, Economics and Business

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Volume 5
Issue 2
Online publication date 2010-06-08
Title Monitoring and analyzing features of electrical power quality system performance
Author Nike Shanku, Genci Sharko
Abstract Power quality is a set of boundaries that allows electrical systems to function in their intended manner without significant loss of performance or life. The term is used to describe electric power that drives an electrical load and the load's ability to function properly with that electric power. Without the proper quality of the power, an electrical device may malfunction, fail prematurely or not operate at all. There are many reasons why the electric power can be of poor quality and many more causes of such poor quality power. Power quality of power systems, which affects all connected electrical and electronic equipment, is a measure of deviations in voltages, currents, frequency, temperatures, winding forces and torques of particular supply systems and their components. In recent years, a considerable increase in nonlinear loads has been experienced; in particular distributed loads, such as computers, monitors and lighting, and distributed sources. The aim of this paper is to display a way of monitoring and analyzing features of electrical power quality system. As a monitoring example is taken output from power transformer rated at 320 kVA, part of distribution grid of Durres City in Albania.
Dugan, R., McGranaghan, M., Santoso, S., Beaty, H., 2003. “Electrical power system quality”, McGraw-Hill, New York

IEC 60050 (161), International Electrotechnical Vocabulary

IEC 61000-2-1(1990-05), 1990. “Description of the environment - Electromagnetic power  supply systems” (EMC), Part2, Environment, Section 1

IEC 61000-4-30, 2001. “Power Quality Measurement Methods”

IEC 61000-4-15, “Flicker meter - Functional and design specifications” 

IEEE, 1992. IEEE Standard 100, “IEEE standard dictionary of electrical and electronic terms”

IEEE, 1995. IEEE Standard 1159-1995, Recommended practice on monitoring electric power

Lamoree, J., Smith, J., Vinett, P., Duffy, T., Klein, M., 1991. “The impact of voltage sags on industrial plant loads,” First International Conference on Power Quality

Keywords Power quality, over voltage, under voltage, sustained interruption, interruption, voltage dips and swells.
Pages 101-107
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