Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Essential indicators of harmonic distortion and measurement principles A number of indicators are used to quantify and evaluate the harmonic distortion in current and voltage waveforms, namely: • Power factor• Crest factor• Harmonic spectrum• R.m.s. value These indicators are indispensable in determining any necessaryContinue reading “Essential Indicators of Harmonic Distortion and Measurement Principles”
Category Archives: Power Quality
Definition and Origin of Harmonics
Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Definition and origin of harmonics Definition of Harmonics The presence of harmonics in electrical systems means that current and voltage are distorted and deviate from sinusoidal waveforms. Harmonic currents are caused by non-linear loads connected to the distribution system. A load is said toContinue reading “Definition and Origin of Harmonics”
Detect and Eliminate Harmonics: Why?
Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Detect and eliminate harmonics: why? Harmonic Disturbances Harmonics flowing in distribution networks represent disturbances in the flow of electricity. The quality of electrical power is deteriorated, and the efficiency of the system is decreased. Here are the main risks linked to harmonics: • OverloadContinue reading “Detect and Eliminate Harmonics: Why?”
Reactors in a Power System
Published by Alex Roderick, EE Power – Technical Articles Reactors in a Power System, May 03, 2021. This article highlights two common types of reactors which are the dry-type and the oil-immersed. In an AC circuit, reactance is the opposition to current flow. A reactor, also known as a line reactor, is a coil wired in series betweenContinue reading “Reactors in a Power System”
An Introduction to Harmonics
Published by Alex Roderick, EE Power – Technical Articles: An Introduction to Harmonics, May 06, 2021. This article will provide a basic introduction of harmonics in power engineering. A harmonic is a current or voltage component at a frequency that is an integer (whole number) multiple (2nd, 3rd, 4th, etc.) of the fundamental frequency. For example, whenContinue reading “An Introduction to Harmonics”
The Difference Between Class A & Class S
Published by GMC-Instruments Power Quality: What Does Class A Mean? Power quality monitoring doesn’t often become an issue until incidents such as system malfunctions, equipment failures, process interruptions, data loss, IT disruptions or even power failure have occurred. As a rule, incidents of this sort are very time-consuming because they cause can’t always pinpointed rightContinue reading “The Difference Between Class A & Class S”
Measurement of Power Characteristics in Public Lighting Networks
Published by Peter JANIGA, Dionýz GAŠPAROVSKÝ, Slovak University of Technology in Bratislava Abstract. The aim of this paper is to share the results of measurements in public lighting networks of current status in terms of electrical characteristics. Based on the measurements it is possible to create an image of the actual power proportions in publicContinue reading “Measurement of Power Characteristics in Public Lighting Networks”
Transient Performance of Interconnected Wind Turbine Grounding Systems
Published by Blagoja MARKOVSKI, Leonid GRCEV, Vesna ARNAUTOVSKI-TOSEVA, Marija KACARSKA,Ss. Cyril and Methodius University of Skopje, Faculty of Electrical Engineering and Information Technologies Abstract. We analyze the transient grounding characteristics of interconnected wind turbine grounding systems, for fast rising current pulses. By increasing the number of wind turbines, influences on harmonic impedance and transient potentialContinue reading “Transient Performance of Interconnected Wind Turbine Grounding Systems”
Importance of Power Quality – Motor
Published by Emerich Energy Private Limited Power quality is of prime importance in deciding the efficiency of any motor. Some of the critical parameters of power quality are • Harmonics• Voltage Unbalance• Voltage Fluctuations In an alternating current (AC) system, the voltage potential and the current through the load circuit are described in frequency andContinue reading “Importance of Power Quality – Motor”
Application of Genetic Algorithm for Optimal Placement of Wind Generators in the MV Power Grid
Published by Ryszard SZCZEBIOT1, Sławomir CIEŚLIK2, State College of Computer Science and Business Administration in Łomża (1)University of Technology and Life Sciences, Bydgoszcz (2) Abstract. The paper presents a modelling method of optimal connection of wind generators to a medium voltage (MV) power grid taking into account minimum active power losses. A genetic algorithm wasContinue reading “Application of Genetic Algorithm for Optimal Placement of Wind Generators in the MV Power Grid”
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