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Medium voltage switches for use on 1-52kV indoor systems are predominantly used for isolation and earthing. Although the majority of these switches are air insulated, gas insulated (SF6) combination switches… Read more
Oct 09, 2019 | Edvard
Calculating selectivity between incoming low voltage feeders connected in parallel is never an easy task. In parallel operation of two, three and more transformers on a common busbar, the partial… Read more
Oct 07, 2019 | Edvard
The search for an overall optimization of the installation with regard to electromagnetic compatibility (EMC) and its ability to function without suffering or emitting excessive interference, comes via a set… Read more
Sep 30, 2019 | Edvard
The purpose of this article is to underline and illustrate the importance of temperature for various aspects of electrical engineering. This is one of the crucial engineering issues from the…...
Sep 20, 2019 | Miodrag Kokotovic
This technical article covers the brief explanation of the power quality issues with the reference to the past as well as two main types of modern UPS systems – rotary… Read more
Sep 04, 2019 | Edvard
Why reactive power and power factor correction is so important? Well, for experienced engineers, this is not the question but the fact. For young students who meet this matter and… Read more
Sep 02, 2019 | Edvard
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… Read more
Aug 21, 2019 | Edvard
Animals are one the largest causes of customer interruptions for nearly every electric utility worldwide, right after human and other factors. Problems and mitigation techniques are as varied as the… Read more
Aug 19, 2019 | Edvard
Previous technical article covered simple low voltage and medium radial distribution systems. This part continue with their practical modifications: loop-primary system – radial secondary, primary selective system – secondary radial… Read more
Aug 14, 2019 | Edvard
Back in early days, engineers weren’t able to use software tools for the purpose of drawing, calculation and design. So, how did they do it? Prior to software era, drawings…...
Aug 08, 2019 | Miodrag Kokotovic
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… Read more
Jul 29, 2019 | Edvard
During last several decades, number and severity of electrical engineering problems caused by harmonic distortion have been significantly increased in both, domestic and industrial environment. This is mainly due to…...
Jul 11, 2019 | Miodrag Kokotovic
In an electrical systems, surge protection devices (SPDs) are usually installed in tap-off configuration (in parallel) between the live conductors and the earth. The operating principle of SPD can be… Read more
Jul 08, 2019 | Edvard
The subject of this technical article are harmonic filters and their design. Filtering measures are recommended and may be required for electrical systems with too high harmonic levels. Filter circuits… Read more
Jul 03, 2019 | Edvard
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… Read more
Jul 01, 2019 | Group Of Authors