Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Detect and eliminate harmonics: why? Harmonic Disturbances Harmonics flowing in distribution networks represent disturbances in the flow of electricity. The quality of electrical power is deteriorated, and the efficiency of the system is decreased. Here are the main risks linked to harmonics: • OverloadContinue reading “Detect and Eliminate Harmonics: Why?”
Yearly Archives: 2023
Reactors in a Power System
Published by Alex Roderick, EE Power – Technical Articles Reactors in a Power System, May 03, 2021. This article highlights two common types of reactors which are the dry-type and the oil-immersed. In an AC circuit, reactance is the opposition to current flow. A reactor, also known as a line reactor, is a coil wired in series betweenContinue reading “Reactors in a Power System”
Types of Surge Arresters
Published by Lorenzo Mari, EE Power – Technical Articles: Types of Surge Arresters, December 18, 2020. Learn about the most common types of surge arresters used to protect against transient overvoltages and lightning strikes. Surge arresters introduce shunting resistance to the ground when a surge appears, absorbing energy from the surge without the voltage becoming excessive.Continue reading “Types of Surge Arresters”
Substation Protection Against Transient Overvoltages and Lightning Strikes
Published by Lorenzo Mari, EE Power – Technical Articles: Substation Protection Against Transient Overvoltages and Lightning Strikes, December 11, 2020. Learn how surge arresters protect power substations against lightning and switching overvoltages. Transient overvoltages are typical of power systems. The sources of overvoltages are direct or nearby lightning strikes, switching operations, electromagnetic pulses, and electrostatic discharges.Continue reading “Substation Protection Against Transient Overvoltages and Lightning Strikes”
Faults and Defects in Power Transformers – A Case Study
Published by Cacilda de Jesus Ribeiro1; André Pereira Marques2,3; Cláudio Henrique Bezerra Azevedo2; Denise Cascão PoliSouza1; Bernardo Pinheiro Alvarenga1; Reinaldo Gonçalves Nogueira1 1School of Electrical and Computer Engineering, Federal University of Goiás, Goiânia, GO, Brazil,2CELG Distribuição, Goiânia, GO, Brazil,3Federal Institute of Education, Science and Technology of Goiás, Goiânia, GO, Brazil Abstract – Power transformers playContinue reading “Faults and Defects in Power Transformers – A Case Study”
Electrical Grounding and Bonding per NEC
Published by Joe Doughney and Lilly Vang, Consulting-Specifying Engineer, Electrical Articles: Electrical grounding and bonding per NEC, December 9, 2020. Understanding correct grounding and bonding design and construction is crucial for proper electrical system operation and personnel safety Learning Objectives • Learn the proper electrical grounding terminologies.• Understand National Electrical Code grounding and bonding requirementsContinue reading “Electrical Grounding and Bonding per NEC”
Utility Power Transmission and Distribution Systems
Published by Alex Roderick, EE Power – Technical Articles: Utility Power Transmission and Distribution Systems, October 16, 2021. Electrical power used in residential, commercial, and industrial buildings is typically generated by a utility at a central point and transmitted and distributed to where it is required through the utility power transmission and distribution system. A utilityContinue reading “Utility Power Transmission and Distribution Systems”
Cars with Electric Drive and External Costs of Road Transport
Published by Wojciech GIS1, Zdzisław KORDEL2, Maciej MENES1,Motor Transport Institute (1), The University of Gdańsk (2) Abstract. The paper describes external environmental costs of road transport. Article presents also an assessment of the so-called reduction. “Marginal costs” such as the cost of fuel emissions, noise and greenhouse gas emissions, by the introduction into service, inContinue reading “Cars with Electric Drive and External Costs of Road Transport”
An Introduction to Harmonics
Published by Alex Roderick, EE Power – Technical Articles: An Introduction to Harmonics, May 06, 2021. This article will provide a basic introduction of harmonics in power engineering. A harmonic is a current or voltage component at a frequency that is an integer (whole number) multiple (2nd, 3rd, 4th, etc.) of the fundamental frequency. For example, whenContinue reading “An Introduction to Harmonics”
What Are the Five Major Types of Renewable Energy?
Published by Govind Bhutada, Visual Capitalist – Energy, June 9, 2022. The Renewable Energy Age This was originally posted on Elements. Sign up to the free mailing list to get beautiful visualizations on natural resource megatrends in your email every week. Awareness around climate change is shaping the future of the global economy in several ways. Governments areContinue reading “What Are the Five Major Types of Renewable Energy?”
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