Electrical Lectures
Transformer connections you are not allowed to forget
Transformers used in power substations or a power system could be a bank of three single-phase transformers connected in either star/delta or star/star etc., or could be a single three-phase… Read more
May 20, 2020 | By Edvard
Medium Voltage ♛
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The most common issues I experienced in wiring of a medium voltage switchgear
Nowadays, the design and manufacturing of a Medium Voltage switchgear is not an easy task. Many factors could affect the generation of an optimal set of engineering drawings to be…...
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May 18, 2020 | By Ivan Contreras
Energy and Power
Four very important precautions for installation of cables and busbar trunking systems
First, to be clear, there are dozen of concerns and precautions you should be aware of when we talk about energy transport. Cables and busbar systems are the most common… Read more
May 11, 2020 | By Edvard
Medium Voltage ♛
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My experience in the design and installation of medium voltage switchgears
Medium Voltage (MV) switchgear is typically any switchgear over 1000V in the United States (US). Some of the nominal voltage ratings used in the US by power utilities are 2.4-4.16kV,…...
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May 07, 2020 | By Amar M
Energy and Power
Twelve doubts in ground testing that make electrical engineers pretty confused
Ground testing is often misunderstood by electrical engineers and technicians who do not perform such testing often and regularly. It seems that there are a lot of questions and doubts… Read more
May 06, 2020 | By Edvard
Electrical Lectures
Why should plant engineers be worried about the power factor? What’s the catch?
Why are power engineers interested in plant power factor, what causes low power factor, and how can it be improved? The objectives of this article are to answer these questions… Read more
May 04, 2020 | By Edvard
High Voltage
Major components of the HVDC converter station (single line diagram explained)
This technical article examines in detail the main equipment of an HVDC converter station and discusses the layout of this equipment within the converter station. The interconnection of HVDC to… Read more
Apr 29, 2020 | By Edvard
Cables ♛
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The essential HV/EHV substation auxiliary facilities you should know about
Nowadays, HV/EHV substations have become pretty complex from the design point of view. Besides the main electrical equipment, which must be designed and selected correctly, there are several auxiliary facilities…...
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Apr 27, 2020 | By Edvard
Energy and Power
Five power quality devices that every commercial plant must have installed
Nowadays everybody speaks about power quality. For many reasons, I would say. Electrical energy is now polluted more than ever, and consumers are more sensitive to power disruptions and fluctuations… Read more
Apr 20, 2020 | By Edvard
Premium Content ♛
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Practical tips for the protection of generators and power transformers
There are usually several ways of protecting HV/MV generators and transformers. It should be noted that one protection relay is often used for several functions, for example, an overcurrent relay…...
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Apr 17, 2020 | By Edvard
Medium Voltage
Switching devices you are likely to spot in every medium voltage switchgear
Up to and including 52 kV voltage range is generally referred to as “medium voltage”. This technical article shed some light on a few devices you are likely to spot… Read more
Apr 13, 2020 | By Edvard
Medium Voltage ♛
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Mastering single line and wiring diagrams: Using circuit breaker for MV power factor correction
Within this article, custom made cubicle intended for supply and protection of MV reactive power compensation block, will be analyzed. Technical characteristics of major electrical components, together with three line…...
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Apr 09, 2020 | By Miodrag Kokotovic
Energy and Power
The essentials of power systems: Relay protection and communication systems
First, I would like to make a note that there are many essentials when we speak about power systems in general. The main relay protection functions (overcurrent, directional, differential, distance,… Read more
Apr 06, 2020 | By Edvard
Energy and Power
Civil engineering in installation of substation buildings and switchboard rooms
What is the civil engineering of substation? The civil engineering includes a large quantity of information and details for the structural drawings required to design switchgear installations. The structural drawings… Read more
Apr 01, 2020 | By Edvard
Energy and Power
Six less known phenomena that can cause disturbance in electrical installations
In addition to the known phenomena of lightning and switching, numerous new sources, in particular power converters, can cause disturbance in installations. This disturbance, which is generated by the installation… Read more
Mar 30, 2020 | By Edvard
