Power Substation
How not to overspecify high voltage CTs and VTs
The installations wherein CTs and VTs are mounted to measure the normal and abnormal values of current and voltage, have many variations in key system parameters, including voltage class, insulation and short-circuit level, earthing type, rated current and burden, accuracy,… Read more
Feb 18, 2019 | By Edvard Csanyi
High Voltage
Inspection and maintenance of capacitor banks (recommended practices)
Capacitor banks generally require very little maintenance because they are static type of equipment, but don’t be fooled by this statement. Capacitors are well known for their dangerous reaction when something goes wrong. Standard safety practices should be followed during… Read more
Feb 13, 2019 | By Edvard Csanyi
Energy and Power
How to start with the design of electrical installation?
The power analysis must be always at the very top of your tasks in the design of an electrical installation. It will enable the source(s) to be sized according to the purpose of the installation, the intended use of the… Read more
Feb 11, 2019 | By Edvard Csanyi
Premium Content
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Connections and working principles of three-phase distribution transformers
A three-phase service can be supplied by one three-phase transformer unit or by interconnecting three single-phase transformer units. One three-phase unit is smaller than an equivalent size bank consisting of three single-phase units. One three-phase transformer tends to be used…...
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Feb 08, 2019 | By Edvard Csanyi
Power Substation
Six steps for specifying IEC 61850 and substation automation requirements
It is not easy to read the IEC 61850 documents or to comprehend how the pieces all work together. When implementing systems as complex and as new as substation automation, substation engineers will need to work closely together with the… Read more
Feb 06, 2019 | By Edvard Csanyi
Industrial Automation
Five ingredients that make SCADA operation delicious
To explain in very simple words, I would say that SCADA is a bunch of equipment that provides an operator at a remote location with sufficient information to determine the status of particular equipment/process and make actions without being physically… Read more
Feb 04, 2019 | By Edvard Csanyi
Safety
People response to short-term exposure to electric fields of AC transmission lines
Short-term exposures to electric fields produced by AC transmission lines and stations can be pretty serious and may be classified according to the type of effect causing a sensation in people. Information in this article is taken from the study… Read more
Jan 30, 2019 | By Edvard Csanyi
Protection
Protection of a transformer directly connected to a transmission line without switchgear
A transformer-feeder include a transformer directly connected to a transmission line circuit without the intermediation of a HV switchgear. The saving in HV switchgear so achieved is unfortunately lowered by increased complication in the necessary protection. The primary requirement is… Read more
Jan 28, 2019 | By Edvard Csanyi
Electrical Lectures
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How to determine power transformer impedance for calculation of short-circuit currents
In order to calculate short-circuit currents, it is obligatory to know conductor-specific equivalent data and impedances of electrical operational equipment, which are usually given by the respective manufacturer. The calculation of short-circuit currents is based on the use of equivalent circuits…...
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Jan 25, 2019 | By Edvard Csanyi
Power Quality
Six MV/HV applications of series capacitors for improving the power quality
Series capacitors are connected in series in the circuit and therefore carry the full transmission line current. The series capacitor is actually a negative reactance in series with a transmission line. The voltage rise across the capacitor is a function… Read more
Jan 23, 2019 | By Edvard Csanyi
Electrical Lectures
6 not-that-easy-to-understand terms related to a power transformer you should understand
There are many terms related to the power transformer operation that can be easily visualized which are especially important for students, like for example transformer construction or regular working principle. On the other hand, there are few not that easy… Read more
Jan 21, 2019 | By Edvard Csanyi
Electrical Lectures
The basic understanding of an earthing protection system (diagram and definitions)
As you already know, protective conductors are the main part of every earthing protection system, but the complexity of the system will increase with the requirements of information technology, voltage surge protection, local area networks, etc. with the risk of… Read more
Jan 16, 2019 | By Edvard Csanyi
Energy Generation
Sizing a MV generator circuit breaker (GCB) in terms of breaking capacity
The main function of a circuit breaker is to carry the rated current of the generator and break both the short-circuit current supplied by the generator and that supplied by the power grid. The basic design of the generator circuit configuration… Read more
Jan 14, 2019 | By Edvard Csanyi
Energy and Power
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How to determine compensation of reactive power of an electrical installation
Improving the power factor of an electrical installation (compensation of reactive power) has many economic and technical advantages, but it’s not always easy to do so. There are numerous approaches to do such job, so let’s try to with this…...
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This content is not available in your premium membership plan. Please upgrade your plan in order to access this content. You can choose an annually based Basic, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers.With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
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Jan 11, 2019 | By Edvard Csanyi
Electrical Lectures
The basic things about substations you MUST know in the middle of the night!
To explain in very simple words, I would say that substation is a bunch of electrical devices gathered and connected in one place. On top are clever electrical devices who control and protect others in order to everything work properly…. Read more
Jan 09, 2019 | By Edvard Csanyi
