Published by Dranetz Technologies, Inc. Website: Dranetz.com Severe power quality problems damaged X-ray equipment, costing $100,000 in one instance. The source of the problem was the switch over from utility to generator power, during regular testing and emergency situations. Figure 1 (below) identified the cause of the problem, an out-of-phase transfer, captured by On Power with aContinue reading “Damaged X-ray Equipment at Major Health Care Center”
Tag Archives: Capacitor Bank
Loss of Energy in Electrical Networks with Capacitor Banks under Optimal Reactive Power Control
Published by Stanilav S. Girshin1, Aleksandr AY. Bigun1, Nikolay А. Mel’nikov1, Elena V. Petrova1, Vladislav M. Trotsenko1, Dmitry S. Osipov2, Vladimir N. Goryunov1, Omsk State Technical University (1), Yugra State University (2) Russian Federation Abstract. One of the key indicators of the energy efficiency of electrical power systems should include the level of electric powerContinue reading “Loss of Energy in Electrical Networks with Capacitor Banks under Optimal Reactive Power Control”
Comparing Harmonics Mitigation Techniques
Published by Jonas Persson Comsys AB Fältspatvägen 4, SE-224 78 Lund, Sweden. jonas.persson@comsy, Comparing Harmonics Mitigation Techniques – Revision 3 – 2014-04-08 Abstract— the document at hand compares harmonic mitigation techniques in a range of applications and settings. Theoretical and practical comparisons are made between active and passive series and shunt filters. The overall contextContinue reading “Comparing Harmonics Mitigation Techniques”
Applications of Supercapacitor Systems in Photovoltaic Installations
Published by Szymon ROGOWSKI1, Maciej SIBIŃSKI2, Karol GARLIKOWSKI3, Katedra Przyrządów Półprzewodnikowych i Optoelektronicznych, Politechnika Łódzka, ORCID. 1. 0000‐0002‐1279‐3592, 2. 0000‐0002‐9752‐3400 Abstract. The following article presents results of measurements and parameter comparison of energy bank based on supercapacitor batteries and a typical lead-acid solution designed for PV microinstallation. For the purposes of the research, basic measurementsContinue reading “Applications of Supercapacitor Systems in Photovoltaic Installations”
Electric Utility Harmonic Study Medium Voltage Filter Design
Published by Electrotek Concepts, Inc., PQSoft Case Study: Electric Utility Harmonic Study Medium Voltage Filter Design, Document ID: PQS0407, Date: September 30, 2004. Abstract: This particular utility was experiencing voltage distortion levels throughout their distribution network that were exceeding IEEE Std. 519 limits. One customer, a plastic extrusion plant, was experiencing blown fuses in their switchedContinue reading “Electric Utility Harmonic Study Medium Voltage Filter Design”
Substation Resonance and Harmonic Filter Application
Published by Electrotek Concepts, Inc., PQSoft Case Study: Substation Resonance and Harmonic Filter Application, Document ID: PQS0702, Date: July 26 1, 2007. Abstract: A utility operates a 16.2 MVAr capacitor bank on a 24kV substation bus that supplies various customers that have significant amounts of nonlinear loads. The utility is investigating the possible conversion of theContinue reading “Substation Resonance and Harmonic Filter Application”
Hybrid Switch for Capacitors Bank used in Reactive Power Compensation
Published by Adam RUSZCZYK1, Krzysztof KÓSKA1, Konrad JANISZ2ABB Corporate Research Centre, Poland (1), AGH University of Science and Technology, Poland (2) Abstract. This paper describes new concept of a switch dedicated for control of three-phase capacitor bank used for low voltage, reactive power compensation. The proposed device utilizes fully controlled IGBT transistors that gives possibilityContinue reading “Hybrid Switch for Capacitors Bank used in Reactive Power Compensation”
Main Effects of Harmonics in Electrical Installations
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”
Power Factor Correction: Reactive Power Compensation Methods
Published by Ahmad Ezzeddine, EE Power – Technical Articles: Power Factor Correction: Reactive Power Compensation Methods, December 15, 2022. This article introduces power factor correction, why it is needed, and how to design it for the system. Increasing photovoltaic penetration tied to the grid has caused many problems for utility providers. One of the main problems is thatContinue reading “Power Factor Correction: Reactive Power Compensation Methods”
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”
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