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”
Yearly Archives: 2022
Research on Design and Control of Microgrid System
Published by Yanbo CHE, Jian CHEN,School of Electrical Engineering & Automation, Tianjin University, Tianjin China. Abstract. Microgrid system has received more and more attention internationally in recent years. As the most effective form of distributed generations, microgrid system has also found wide applications in many areas. In this paper, the optimal configuration issue of microgridContinue reading “Research on Design and Control of Microgrid System”
Consumers Protection and Monitoring with Microcontroller Based Device for Low-Voltage Distribution Systems
Published by Petre Lucian OGRUTAN1, Lia Elena ACIU1, Dan LOZNEANU1, Ioan ROSCA2,Transilvania University of Brasov, Romania (1), Transilvania Sud Electricity Distribution (2) Abstract. Protection devices against over-voltage and over-currents for low voltage systems are equipped with varistors and gas-discharge tubes around a fuse, having a disconnection time about 200ms. This paper proposes an intelligent protectionContinue reading “Consumers Protection and Monitoring with Microcontroller Based Device for Low-Voltage Distribution Systems”
Inductors in Series
Published by Blaine Geddes In this article, you find a focus on series-connected inductors where ladder low pass filter structures consisting of series inductors and shunt capacitors are introduced. For inductors connected in series with no mutual flux coupling, the electrical effect is analogous to resistors connected in series and the individual inductance values areContinue reading “Inductors in Series”
The Influence of Earth Thermal Conductivity on Temperature Profile of 110 kV Electric Power Cable System
Published by Janusz TYKOCKI, The State College of Computer Science and Business Administration in Lomza Abstract. The paper presents the conductivity of the ground effect on the distribution of temperature field in three-phase high-voltage cables, 64/110 kV, depending on the depth of their arrangement in the ground. The simulation uses the finite element method FEM.Continue reading “The Influence of Earth Thermal Conductivity on Temperature Profile of 110 kV Electric Power Cable System”
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”
Protection of Busbar Based on Reed Switches
Published by Mark KLETSEL1, Nariman KABDUALIYEV2, Bauyrzhan MASHRAPOV2, Alexander NEFTISSOV2,National Research Tomsk Polytechnic University (1), Pavlodar State University (2) doi:10.12915/pe.2014.01.21 Abstract. A phase comparison scheme of protection of busbar on the reed switches fixed connections near conductors extending from these busbars which does not require current transformers has been studied. The article provides an analysisContinue reading “Protection of Busbar Based on Reed Switches”
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”
Towards Knowledge Engineering Based Guidance for Electrical Engineers
Published by Muhammad MANSOOR, Norman MARIUN, Napsiah ISMAIL, Noor Izzri ABDULWAHAB,Faculty of Engineering, University Putra Malaysia (UPM) Abstract. This paper proposes a concept of knowledge engineering based innovative approach for seeking solutions related to electrical engineering systems. The knowledge base approach is discussed for its effectiveness at preliminary stages of solution hunting and solution design,Continue reading “Towards Knowledge Engineering Based Guidance for Electrical Engineers”
Substation Transformer Switching and Dynamic Overvoltages
Published by Electrotek Concepts, Inc., PQSoft Case Study: Substation Transformer Switching and Dynamic Overvoltages, Document ID: PQS1204, Date: January 26, 2012. Abstract: This case study presents the results for a wind plant substation transformer energizing and dynamic overvoltage evaluation. Transformer inrush currents contain harmonic components that may create dynamic overvoltages if a substation transformer is energizedContinue reading “Substation Transformer Switching and Dynamic Overvoltages”
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