Energy Generation
Generators applicable to high reliability requirements of healthcare and other facilities
Generator systems described in this technical article are applicable to healthcare requirements, as well as other facilities that may require a high degree of reliability. The electrical supply for data centers, financial institutions, telecommunications, government and public utilities also require… Read more
Aug 28, 2019 | By Edvard Csanyi
High Voltage
10 most common locations of shunt capacitors installed in a power system
It’s quite simple, using shunt capacitor banks to supply the leading currents required by the load relieves the generator from supplying that part of the inductive current. Both distribution and transmission systems benefit due to the application of shunt capacitors… Read more
Aug 26, 2019 | By Edvard Csanyi
Energy and Power
What do you need for short-circuit calculations? The less you assume, the better!
If you ask any electrical design engineer what is the most time consuming and critical required in short circuit analysis, he/she would say that it’s obtaining available data. The less data that is assumed, the better and more accurate the… Read more
Aug 21, 2019 | By Edvard Csanyi
Energy and Power
Practical modifications of MV/LV radial distribution systems applied in buildings
This technical article covers low voltage and medium radial distribution systems with their practical modifications: loop-primary system – radial secondary, primary selective system – secondary radial and two-source primary – secondary selective system. This discussion covers the last three modifications… Read more
Aug 14, 2019 | By Edvard Csanyi
Low Voltage
The most common MV/LV radial distribution systems applied in buildings
In many cases, power is supplied by the power utility to a building at the utilization voltage. In these cases, the distribution of power within the building is achieved through the use of a simple radial distribution system. In cases… Read more
Aug 12, 2019 | By Edvard Csanyi
Medium Voltage
MV distribution system design based on metal-clad drawout switchgear
Nowadays, system design engineers have a choice of many types of systems that may be used for a particular application. This discussion covers medium voltage distribution systems and their practical modifications. But first we will explain the basic primary /… Read more
Aug 05, 2019 | By Edvard Csanyi
Energy and Power
The essentials of designing MV/LV single line diagrams (symbols & drawings analysis)
First of all, power system designers should always communicate their design requirements through a combination of drawings, schedules and technical specifications. One of the key tools in developing and documenting an electrical power system is the Single Line Diagram (shortened… Read more
Jul 29, 2019 | By Edvard Csanyi
Medium Voltage
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Learn how to analyse and check wiring diagrams of a medium voltage switchgear
As already written earlier regarding the LV switchboard, wiring diagrams are used to show the control and signalization principle of operation inside the switchboard. Usually, they are given in form of electrical circuits between two lines which are representing control…...
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Jul 25, 2019 | By Miodrag Kokotovic
Energy and Power
Protection of pumped storage power plants using vacuum generator circuit breaker (VGCB)
The pumped storage power plants (PSPP) are one of the commercially proven methods available for grid-scale energy storage. Building additional PSPPs particularly in the areas with high installed capacities of wind parks and solar power plants will significantly improve the… Read more
Jul 01, 2019 | By Group Of Authors
Low Voltage
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Major components you can spot while looking at opened LV and MV switchboards
Depending on the size of the building or factory site and whether the supply is high voltage or low voltage, there may be requirements for both a main high voltage switchboard and one or more low voltage switchboards or just…...
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Jun 10, 2019 | By Edvard Csanyi
Low Voltage
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How to make calculation for a distribution substation 10/0.4 kV, 2×1600 kVA
Distribution substations with an installed power of 2×1600 kVA are a typical example of electrical power supply facilities which can be often seen all around Europe and wider. By “calculation” of such a substation, it is assumed that values of…...
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May 02, 2019 | By Miodrag Kokotovic
Low Voltage
4 essential ground-fault protective schemes you should know about
While ground-fault protective schemes may be elaborately developed, depending on the ingenuity of the relaying engineer, nearly all schemes in common practice are based on one or more of the methods of ground-fault detection discussed in this article. Distribution circuits… Read more
Oct 29, 2018 | By Edvard Csanyi
Medium Voltage
Four Crucial Switching Functions Of a MV Circuit Breaker (Facts You MUST Know)
The demands made on MV power systems, irrespective of the place of use of the circuit breakers, vary widely in nature. All these functions cannot obviously be performed with the same efficiency. Thus, finally any circuit breaker design can only… Read more
Oct 17, 2018 | By Edvard Csanyi
Medium Voltage
Standard tripping schemes and trip circuit supervision schemes for MV switchgear
Medium voltage switchgear is used for switching medium voltage loads through associated control, measuring, protective and regulating equipment. This operation also involves considerable manual intervention which therefore necessitates the fulfilment of safety requirements laid down in International Standards. A variety… Read more
Oct 08, 2018 | By Edvard Csanyi
Medium Voltage
Coordination analysis for a typical 13 kV distribution feeder of several lines
A typical 13 kV feeder of several lines at a distribution substation is shown in Figure 1. This is supplied from a 115 kV line through a 15/20/25 MVA transformer protected by a high-side fuse. Only one of the four… Read more
Oct 01, 2018 | By Edvard Csanyi
