Published by David Horning, November 2014. Power Monitors, Inc., White Paper: Steps to Find the Source of Harmonics Abstract. Harmonics are “Non-Linear” current or voltage in an electrical system. Any waveform that deviates from a perfect sine wave has harmonics. Any nonlinear load draws harmonic currents and therefore produces harmonic voltage distortion, by producing non-sinusoidalContinue reading “Steps to Find the Source of Harmonics”
Tag Archives: Power System
Investigation of Power Saving Modes in 10/0.4 kV Distribution Networks
Published by Oleksandr MIROSHNYK1, Andrzej SZAFRANIEC2, Kharkiv Petro Vasylenko National Technical University of Agriculture (1), Kazimierz Pulaski University of Technology and Humanities in Radom, Faculty of Transport, Electrical Engineering and Computer Science (2) Abstract. Operation modes of 0.4/0.23 kV power supply systems are modelled using Monte Carlo method by means of Electronics Workbench software and statisticalContinue reading “Investigation of Power Saving Modes in 10/0.4 kV Distribution Networks”
Specifics of Hydropower Plant Management in Isolated Power Systems
Published by Sherkhon SULTONOV1 , Murodbek SAFARALIEV2 , Sergey KOKIN2 , Stepan DMITRIEV2 , Inga ZICMANE3 , Shokhin DZHURAEV1,4 Tajik Technical University, Tajikistan(1), Ural Federal University (2), Riga Technical University, Latvia (3), Branch of the National Research University ‘Moscow Power Engineering Institute’ in Dushanbe City (4)ORCID: 1. 0000-0003-2322-5272; 2. 0000-0003-3433-9742; 3. 0000-0001-7493-172X; 4. 0000-0001-8781-2383; 5.Continue reading “Specifics of Hydropower Plant Management in Isolated Power Systems”
Combining Waveforms in a Power System to Cancel Harmonic Components
Published by Alex Roderick, EE Power – Technical Articles: Combining Waveforms in a Power System to Cancel Harmonic Components, August 23, 2021. Harmonics can cause transformers to fail, motors to burn out, circuit breakers to trip (nuisance tripping), and neutral conductors and other parts of a power distribution system to overheat. Severe overheating leads to electricalContinue reading “Combining Waveforms in a Power System to Cancel Harmonic Components”
Electric Power Quality Measurement
Published by Alessandro Ferrero, Dipartimento di Elettrotecnica – Politecnico di Milano – Piazza Leonardo da Vinci 32 – 20133 Milano – Italy Abstract – The proliferation of non-linear and time-variant loads is causing a number of disturbances on the electric network, from a more and more significant distortion of both currents and voltages, to transientContinue reading “Electric Power Quality Measurement”
Troubleshooting Electric Motor Power Circuits
Published by Alex Roderick, EE Power – Technical Articles: Troubleshooting Electric Motor Power Circuits, October 15, 2021. The two major parts of a motor circuit are the motor power circuit and the motor control circuit. Learn some basic troubleshooting tips for these kinds of motor circuits. A motor power circuit is the section of an electricalContinue reading “Troubleshooting Electric Motor Power Circuits”
Tests of Selected Distance Protection Functions of Modern Protective Relay used for HV and EHV Transmission Lines Protection
Published by Marcin JANUSZEWSKI, Ryszard KOWALIK, Karol KUREK, Emil BARTOSIEWICZ, Adam SMOLARCZYK, Désiré D. RASOLOMAMPIONONA, Warsaw University of Technology, Electrical Power Engineering Institute Abstract. This article describes the comparison of test results of distance protection functions (ANSI 21) implemented in protective relays of various manufacturers dedicated to HV and EHV lines protection. A special emphasisContinue reading “Tests of Selected Distance Protection Functions of Modern Protective Relay used for HV and EHV Transmission Lines Protection”
Frequency Control in a Power System
Published by Pietro Tumino, EE Power – Technical Articles: Frequency Control in a Power System, October 15, 2020. Learn about the primary, secondary and tertiary frequency control in a power system. An electric power system is characterized by two main important parameters: voltage and frequency. In order to keep the expected operating conditions and supply energyContinue reading “Frequency Control in a Power System”
Control System for Distributed Generation in Low Voltage Network Systems
Published by Robert JĘDRYCHOWSKI, Klara SEREJA, Politechnika Lubelska, Katedra Sieci Elektrycznych i Zabezpieczeń, Poland Abstract. Implementation of prosumer energy generation to low-voltage network systems involves both benefits and technological problems concerning the grid operation. Electricity generation in LV network systems is of a distributed and quite unpredictable character. In those systems, solar PV installations, whoseContinue reading “Control System for Distributed Generation in Low Voltage Network Systems”
Advantages of Interwinding Capacitive Test Setup in FRA Diagnostics of Transformer Windings
Published by Wojciech SZOKA, Szymon BANASZAK, Konstanty M. GAWRYLCZYKZachodniopomorski Uniwersytet Technologiczny w Szczecinie, Katedra Elektrotechnologii i Diagnostyki, Poland Abstract. Transformers are the main element of the power system. Their reliable operation affects the efficiency of energy supply. Each transformer should be subjected to periodic diagnostic tests. Frequency response analysis (FRA) is a non-destructive diagnostic methodContinue reading “Advantages of Interwinding Capacitive Test Setup in FRA Diagnostics of Transformer Windings”
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