Harmonics Generation, Propagation and Purging Techniques in Non-Linear Loads

Published by Hadeed Ahmed Sher, Khaled E. Addoweesh and Yasin Khan 1. Introduction Industrial revolution has transformed the whole life with advanced technological improvements. The major contribution in the industrial revolution is due to the availability of electrical power that is distributed through electrical utilities around the world. The concept of power quality in thisContinue reading “Harmonics Generation, Propagation and Purging Techniques in Non-Linear Loads”

Distribution Substation Capacitor Bank Evaluation

Published by Electrotek Concepts, Inc., PQSoft Case Study: Distribution Substation Capacitor Bank Evaluation, Document ID: PQS1014, Date: October 15, 2010. Abstract: This case study presents a utility distribution substation capacitor bank harmonic analysis. The simulations were completed using the SuperHarm program. The investigation included frequency response and harmonic distortion simulations for a utility substation that includedContinue reading “Distribution Substation Capacitor Bank Evaluation”

Distribution Feeder Resonance and Harmonic Filter Evaluation

Published by Electrotek Concepts, Inc., PQSoft Case Study: Distribution Feeder Resonance and Harmonic Filter Evaluation, Document ID: PQS1006, Date: March 15, 2010. Abstract: Utility power system harmonic problems can often be solved using a comprehensive approach including site surveys, harmonic measurements, and computer simulations. This case study presents the results for a utility distribution feeder resonanceContinue reading “Distribution Feeder Resonance and Harmonic Filter Evaluation”

Evaluation of Harmonic Impacts from Compact Fluorescent Lights On Distribution Systems

Published by Electrotek Concepts, Inc., PQSoft Case Study: Evaluation of Harmonic Impacts from Compact Fluorescent Lights On Distribution Systems, Document ID: PQS0322, Date: April 16, 2003. Abstract: This case study presents the results of a research investigation into the impact of compact fluorescent lights (CFLs) on an existing distribution system. The analysis uses a combination ofContinue reading “Evaluation of Harmonic Impacts from Compact Fluorescent Lights On Distribution Systems”

Commercial Facility Harmonic Evaluation

Published by Electrotek Concepts, Inc., PQSoft Case Study: Commercial Facility Harmonic Evaluation, Document ID: PQS1005, Date: March 15, 2010. Abstract: Utility power system harmonic problems can often be solved using a comprehensive approach including site surveys, harmonic measurements, and computer simulations. This case study presents the results for a commercial facility harmonic evaluation. The simulations wereContinue reading “Commercial Facility Harmonic Evaluation”

Arc Furnace Harmonic Evaluation

Published by Electrotek Concepts, Inc., PQSoft Case Study: Arc Furnace Harmonic Evaluation, Document ID: PQS1004, Date: March 15, 2010. Abstract: Utility power system harmonic problems can often be solved using a comprehensive approach including site surveys, harmonic measurements, and computer simulations. This case study presents the results for an arc furnace harmonic evaluation. The case studyContinue reading “Arc Furnace Harmonic Evaluation”

Harmonics Analysis: Using Fourier to Analyze Waveforms

Published by Amna Ahmad All repetitive waveforms can be composed of combinations of many sinusoidal waves. Any waveform can be analyzed to determine the component quantities. In this article, learn how to use Fourier Analysis to determine the amplitudes of harmonic components and their phase relationship to the fundamental component in various periodic non-sinusoidal waveforms.Continue reading “Harmonics Analysis: Using Fourier to Analyze Waveforms”

Overhead Line Fault Section Positioning System Based on Wireless Sensor Network

Published by Ai-hua Dong, Xinlin Geng, Yi Yang, Ying Su, Mengyao Li, Henan Polytechnic University Abstract. This paper introduces overhead line fault detection and location system as the core of industrial control computer. The combination of software and hardware, the methods of current rate of change and zero current detection are used, and so theContinue reading “Overhead Line Fault Section Positioning System Based on Wireless Sensor Network”

Voltage Harmonics Transfer through Medium Voltage Instrument Transformers

Published by Jarosław ŁUSZCZ, Politechnika Gdańska, Wydział Elektrotechniki I Automatyki Abstract. Voltage transformers are widely used in power quality monitoring systems in medium and high voltage grids. This paper presents accuracy problems related to voltage harmonics transfer through instrument transformers. A simplified lumped-parameters wideband circuit model of the voltage transformer is proposed and verified byContinue reading “Voltage Harmonics Transfer through Medium Voltage Instrument Transformers”

Harmonic Current Impact on Transient Overvoltages during Filter Switching-Off

Published by Yuriy VARETSKY1, Roman PAVLYSHYN2, Michał GAJDZICA1,AGH University of Science and Technology (1), Lviv Polytechnic National University(2) Abstract. This paper focuses on the features of power filter switching-off in industrial power supply systems. The filter switching-off behavior under a large amount of a harmonic current component has been analyzed. The effect of harmonic currentContinue reading “Harmonic Current Impact on Transient Overvoltages during Filter Switching-Off”