Published by Muhammad Najmi Bohari, P.Eng, powerquality.sg THE ABCS OF POWER QUALITY IN SINGAPORE, October 14, 2023. In general, current harmonics contribution from solar PV inverters do not pose much of a power quality problem. Its ITHD is usually small and negligible as compared to a harmonics-producing load such as a variable speed drive (ITHDContinue reading “Harmonics From Solar PV Inverters”
Yearly Archives: 2023
Power Quality Issues and It’s Mitigation Techniques
Published by Tejashree G. More, Pooja R. Asabe,Prof. Sandeep Chawda, (Department of Electrical Engineering, Bhivarabai Sawant Institude Of Technology and Research(w), Wagholi, Pune, India) ABSTRACT In this paper the main power quality (PQ) problems are presented with there associated causes and consequences. The economic impact associated with PQ are characterized. Also this paper tries toContinue reading “Power Quality Issues and It’s Mitigation Techniques”
Power Quality in the Portuguese Distribution Network
Published by António LEBRE, Fernando BASTIÃO Nuno MELO, Luísa JORGE Pedro VELOSO, António BLANCO, EDP Distribuição – Portugal. Emails: antoniojose.lebrecardoso@edp.pt, nuno.melo@edp.pt, pedro.veloso@edp.pt, fernando.bastiao@edp.pt, luisa.jorge@edp.pt, antonio.blanco@edp.pt ABSTRACT There is an increase in the quantity and in the variety of challenges faced by distribution network operators, concerning to Power Quality (PQ). EDP Distribuição, in Portugal, has beenContinue reading “Power Quality in the Portuguese Distribution Network”
Voltage Fluctuations in Networks with Distributed Power Sources
Published by Maciej MRÓZ1, Zbigniew HANZELKA, Krzysztof CHMIELOWIEC2, TAURON Dystrybucja S.A.(1), AGH – University of Science and Technology (2) Abstract. One of the electromagnetic disturbances generated by distributed power sources, e.g. wind turbines, are voltage fluctuations. An imprecise prediction of the disturbance level may be the reason for erroneous decisions made at the stage ofContinue reading “Voltage Fluctuations in Networks with Distributed Power Sources”
Causes and Solutions of the Potential Induced Degradation (PID) Effect in PV Modules
Published by Pietro Tumino, EE Power – Technical Articles: Causes and Solutions of the Potential Induced Degradation (PID) Effect in PV Modules, July 09, 2020. In case you are dealing with unexpected and unreasonable power loss in your photovoltaic plant, you may be experiencing the PID effect in the PV modules. Potential induced degradation (PID)Continue reading “Causes and Solutions of the Potential Induced Degradation (PID) Effect in PV Modules”
Resource-Saving Protection of Powerful Electric Motors
Published by Mark KLETSEL1, Abdulla KALTAYEV2, Bauyrzhan MASHRAPOV2,National Research Tomsk Polytechnic University (1), Pavlodar State University (2) Abstract.The article presents the disadvantages of traditional and some new electric protections of powerful electric motors. It is proposed to eliminate these drawbacks by constructing phase-sensitive protection that does not use current transformers, with a majority circuit andContinue reading “Resource-Saving Protection of Powerful Electric Motors”
The New Design of the Vacuum Circuit Breaker Mounted on the Roof of Electric Traction Units
Published by Piotr BORKOWSKI1, Łukasz NOWAK1, Stanisław SZYMAŃSKI2,Department of Electrical Apparatus of the Technical University of Lodz(1), Factory of Electrical Apparatus Woltan(2) Abstract. This article presents the research on new design of a vacuum breaker type DCU-800M mounted on the roof of Electric Traction Units. The impact of one circuit breaker on another one wasContinue reading “The New Design of the Vacuum Circuit Breaker Mounted on the Roof of Electric Traction Units”
Dissecting Electric Motor Malfunctions
Published by Alex Roderick, EE Power – Technical Articles: Dissecting Electric Motor Malfunctions, October 20, 2021. Learn about the important electric motor parameters, such as voltage rating, acceleration time, overcycling, and insulation resistance, that should be taken into account to avoid electric motor malfunctions. Electric motors are designed and sized to operate in HVAC systems forContinue reading “Dissecting Electric Motor Malfunctions”
Monitoring of Electric Arc Furnace Supply Voltage Frequency using Phasor Analysis
Published by Szymon BARCZENTEWICZ, Krzysztof DUDA, Andrzej BIEŃ, AGH University of Science and Technology Abstract. This paper presents the results of measurement experiment conducted in the operating steel plant. Frequency analysis of measured signals revealed an interesting phenomenon, as it happened that after switching off the electric arc furnace, the frequency of the supplying voltageContinue reading “Monitoring of Electric Arc Furnace Supply Voltage Frequency using Phasor Analysis”
Highest Voltage Sag and Swell Compensation using Single Phase Matrix Converter with Four Controlled Switches
Published by S. Abdul Rahman1, Shumye Birhan Mule2, Estifanos Dagnew Mitiku3, Gebrie Teshome Aduye4, C. Gopinath5, Department of Electrical & Computer Engineering, Institute of Technology, University of Gondar, Ethiopia (1, 2, 3, 4) Department of Electrical & Electronics Engineering, Sri Venkateswara College of Engineering, Chennai, India (5) Abstract: The aim of this paper is toContinue reading “Highest Voltage Sag and Swell Compensation using Single Phase Matrix Converter with Four Controlled Switches”
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