The most common Gas-Insulated Switchgear (GIS) faults and a case of 220kV CB cubicle
Over decades since its inception, GIS switchgear demand is still prevalent in these present times due to its compact built, reliability, and maintenance advantages compared to conventional Air-insulated switchgear. Even the strong negative effect on the environment when its gas…...
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Oct 17, 2022 | By Lark C. Cosedo
How to prepare an enquiry for a power transformer: Design and tendering tips
Nothing is more crucial during the early phase of a transformer inquiry than a complete and explicit listing of all requirements that must be met from both the manufacturer’s and the user’s perspectives. The IEC standards include detailed requirements that…...
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Oct 10, 2022 | By Edvard Csanyi
Ten biggest mistakes and misconceptions in the design of low voltage distribution systems
To provide the end user with a safe, effective, and reliable solution, a designer must steer clear of numerous blunders and misconceptions when creating a low voltage distribution design. Although there are many misconceptions about electrical designs, the ones I’ll…...
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Oct 03, 2022 | By Mohammed Ayman
Procedures and activities during the design and tendering phase of HV project engineering
Before getting into the project engineering phase, power system planning with the focus on basic design aspects of main power system components must be performed. Based on recommendations resulting from various studies, the project engineering phase, mainly covers the design,…...
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Sep 26, 2022 | By Edvard Csanyi
The art of a low voltage switchgear design: The case study and practical experience
LV panels are metal-enclosed switchgear that provides a three-phase power distribution to supply electric power at voltages up to 1000 volts, current up to 10000 amps, and a frequency of 50HZ or 60HZ. LV panels are always connected at the…...
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Sep 19, 2022 | By Mohammed Ayman
Instructions for making specifications and selecting the main components of an HV substation
From the point of making specification, high voltage substation is pretty complex. There are dozen of substation equipment that must be specified and selected out of hundreds of manufacturers. This article will help a little bit with some fundamental instructions…...
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Sep 05, 2022 | By Edvard Csanyi
Inside the capacitor bank panel: Power factor correction, calculation and schematics
Various calculations must be performed during the electrical design stages of any project to deliver a safe electrical system for the end user. One of the essential things that must be taken into account after calculating the total and demand…...
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Aug 22, 2022 | By Mohammed Ayman
Tricks in designing and analyzing schematics and diagrams of high voltage substations
High voltage power substations are complex networks of power and control connections, represented by design elements like- Single Line Diagrams, layout and block diagrams, schematics, logic diagrams, schedules, and so many more. Wiring diagrams and schematics, in a sense, are…...
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Aug 08, 2022 | By Bishal Lamichhane
Inside Variable Frequency Drive (VFD) Panel: Configuration, Schematics and Troubleshooting
Proper analysis of the VFD’s power and control circuit diagrams is essential for successful troubleshooting. But before starting any analysis, you must know how your system connected through VFD works and how it breathes. You must also know all components…...
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Jul 25, 2022 | By Mohammed Ayman
Secrets and warnings in operation and maintenance of a Gas Insulated Substation (GIS)
After its inception in the mid-1960s, GIS technology has become a remarkable success over a wide range of high voltage applications up to 800 kV. Reliable operation and compact size have been its main advantages over its conventional air-insulated counterparts…....
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Jul 11, 2022 | By Bishal Lamichhane
What will happen to digital substations once the internet drops dead for good?
Here at EEP, we have already covered multiple aspects of digital substations, ranging from design, upgradations, and whatnot. We may continue writing till eternity and still be left playing catchups with the latest addition to advancements in power systems design…...
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Jun 27, 2022 | By Bishal Lamichhane
Electrical engineering for hydropower, from run-of-river to pumped storage plants
Nowadays, when we all see and feel the colossal crisis looming on the horizon, the question of energy security is among the first things on the table in each country’s management. It’s now essential more than ever for each country…...
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Jun 13, 2022 | By Marco Bruschini
Should we be concerned about the cybersecurity of modern digital substations?
Swift communication and interoperability are two primary aspects of modern digital substations that make them stand out in the protection and monitoring front. Apparently, the same features sometimes make them vulnerable to external cyber threats if left unprotected. While there…...
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May 30, 2022 | By Bishal Lamichhane
Main and auxiliary circuit diagrams of switching pole-changing three-phase motors
This technical article is dedicated to the main and auxiliary circuit diagrams of switching three-phase motors. We’ll now discuss a little more complicated schematics than the previous article. We’ll cover seven schematics of switching pole-changing three-phase induction motors with one…...
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May 23, 2022 | By Edvard Csanyi
Hints for a good design of an optical communication system for a transmission line network
Communication networks are an integral part of interconnected transmission lines in a power grid, analogous to the spinal cord for control signal and information exchange among substations, data hubs, and load dispatch centers. This article covers the major trend and…...
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May 09, 2022 | By Bishal Lamichhane
