Energy and Power
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A real-life case study of relay coordination (step by step tutorial with analysis)
I would say that coordination is a TEAMWORK. In the protection context, it implies how the various protection devices in an electrical distribution network, work as a team, to achieve the common objective of power supply continuity, even in the…...
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Jun 15, 2020 | By Sivakumar K
Power Substation
Protection practice recommendations and relay schemes for transformer, bus and breaker failure
Protective relays are most often applied with other protective and auxiliary relays as a system rather than individually. The following basic scheme descriptions apply to electromechanical, static, and microprocessor relay systems. The static and microprocessor relay systems generally have more… Read more
Jun 06, 2020 | By Edvard Csanyi
Protection
The impact of interconnection transformer on the protection of the utility system with DG
Interconnection transformers are used to interface a distribution generation (DG) unit with an existing power system, and to provide the necessary isolation. Utilities recommend using an interconnection transformer to eliminate possible zero sequence or dc components in the generated voltages,… Read more
Jun 03, 2020 | By Edvard Csanyi
Maintenance
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My worst experience in the maintenance and supervision of medium voltage substations
While there are various voltage levels applicable across the globe depending upon the usability, the category of Medium Voltage remains one of the most critical voltage group comprising primary distribution or sub-transmission category of power supply at the range of…...
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Jun 01, 2020 | By Bishal Lamichhane
Energy and Power
Planning and installation of the low voltage switchgear – The devil is in the detail!
To be honest with you, the planning and installation of LV switchgear is a damn complicated job. But you knew that :) There are dozen of detail where you can stumble, if not planned carefully as they should be. The… Read more
May 24, 2020 | By Edvard Csanyi
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 transformer with a single core. Normally for large capacity transformers,… Read more
May 20, 2020 | By Edvard Csanyi
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 easily followed by the wiring people in the shop. One…...
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May 18, 2020 | By Ivan Contreras
Energy and Power
Four very important precautions for the 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 and reliable ways to do so, at least until wireless… Read more
May 11, 2020 | By Edvard Csanyi
Medium Voltage
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My experience in the design and installation of medium voltage switchgear
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, 7.2kV, 13.8kV, 14.4kV, 23kV, 34.5kV and so on. The design…...
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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 on testing the ground. This technical article, based on Transcat’s… Read more
May 06, 2020 | By Edvard Csanyi
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 briefly and to include handy application information for power-factor problems…. Read more
May 04, 2020 | By Edvard Csanyi
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 the AC system is very complex, and nowadays are now… Read more
Apr 29, 2020 | By Edvard Csanyi
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 without which a substation would not be able to operate…...
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Apr 27, 2020 | By Edvard Csanyi
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 than a small flower to the stronger wind. But, it… Read more
Apr 20, 2020 | By Edvard Csanyi
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 can be used for both overcurrent and earth fault protection…....
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Apr 17, 2020 | By Edvard Csanyi
