Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Main effects of harmonics in electrical installations Effects of harmonics – Resonance The simultaneous use of capacitive and inductive devices in distribution networks may result in parallel or series resonance. The origin of the resonance is the very high or very low impedance values atContinue reading “Main Effects of Harmonics in Electrical Installations”
Tag Archives: Harmonics
Harmonic Measurement in Electrical Networks
Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Harmonic measurement in electrical networks Procedures for harmonic measurement Harmonic measurements are carried out on industrial or commercial sites: • Preventively, to obtain an overall idea on distribution-network status (network mapping),• In view of corrective action, to determine the origin of a disturbance and determineContinue reading “Harmonic Measurement in Electrical Networks”
Billing Measurements in the High and Extra-High Voltage Network taking into Account the New Frequency Classes According to IEC 61869-1 ED2 (AFDIS)
Published by Roland Buerger (Senseleq B.V.), Dr. Thomas Heid (CONDIS SA) Internationally, it is not easy to specify the range of high voltage exactly. The boundary between medium and high voltage is between 30 kV and 100 kV, depending on local and historical conditions. In the current version of EN 50160 from 2020, the voltageContinue reading “Billing Measurements in the High and Extra-High Voltage Network taking into Account the New Frequency Classes According to IEC 61869-1 ED2 (AFDIS)”
Interharmonics: What They Are, Where They Come From and What They Do
Published by Michael B. Marz, American Transmission Company, Waukesha, WI Email: mmarz@atcllc.com INTRODUCTION The use of sophisticated power electronics and communication systems to improve power system efficiency, flexibility and reliability is increasing interharmonic distortion and adding equipment sensitive to that distortion to the system. Knowledge of interharmonics, their sources, effects, measurement, limits and mitigation, willContinue reading “Interharmonics: What They Are, Where They Come From and What They Do”
Essential Indicators of Harmonic Distortion and Measurement Principles
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”
Industrial Harmonic Filter Design
Published by Electrotek Concepts, Inc., PQSoft Case Study: Industrial Harmonic Filter Design, Document ID: PQS0504, Date: June 30, 2005. Abstract: The industrial harmonic problem can be solved using a comprehensive approach including site surveys, harmonic measurements, and computer simulations. Simple calculations are used to determine the system resonant frequencies and then the preliminary model development isContinue reading “Industrial Harmonic Filter Design”
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?”
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”
Reducing Energy Consumption in Production Processes and Parameters Describing the Quality of Electrical Energy
Published by Andrzej LANGE1, Marian PASKO2, University of Warmia and Mazury, Department of Electrical, Power, Electronic and Control Engineering (1), Silesian University of Technology, Institute of Electrical Engineering and Computer Science (2) Abstract. This article presents the consequences of exchanging older metal cutting machines for new ones in terms of electrical energy consumption and qualityContinue reading “Reducing Energy Consumption in Production Processes and Parameters Describing the Quality of Electrical Energy”
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