Voltage transformer selection scheme in complex substations
In substations, voltage transformers (VTs) are used extensively for energy metering, protection relay operations, and synchronization checks. Their design includes multiple cores, each dedicated to specific functions. For instance, a protection core, typically labeled 3P, offers acceptable accuracy for fault…...
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Dec 02, 2024 | By Muhammad Kashif
Electrical thumb rules for staying safe and alive
How can one stay safe and alive while working in a power system? That’s a good question; however, there are a dozen answers. But let’s start with the first answer. The primary concerns about electrical safety are the unseen nature… Read more
Nov 27, 2024 | By Edvard Csanyi
Your Black Friday in EEP 🎁 (20% + 30% OFF)
Hi there, hope things is good with you! It gives us great pleasure to present to you two Black Friday offers for electrical engineers: 20% off on the EEP Pro Membership plan, and 30% off on all video courses available… Read more
Nov 25, 2024 | By Edvard Csanyi
Synchro Check Schemes: Key Techniques and Considerations for Power System Stability
In power systems, synchronization is a fundamental requirement for connecting two sources of electric power, such as a generator to a grid or between segments of the power network. Ensuring that these sources are aligned in frequency, phase sequence, and…...
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Nov 18, 2024 | By Muhammad Kashif
Best Practices in Synchronization and Reactive Power Control in Power System
In the world of power systems, synchronization and reactive power control are crucial to maintaining stability, efficiency, and reliability. Synchronizing various power sources, such as generators and grids, ensures they operate in harmony to meet the demand and support the…...
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Nov 11, 2024 | By Muhammad Kashif
Bringing new life to an old Air-Insulated Substation (AIS)
An increasing number of substations globally are aging, while the construction of new ones is hindered by competitive limitations, rigorous environmental rules, and community acceptance issues. Simultaneously, the demand for electricity is consistently escalating, resulting in increased short circuit levels… Read more
Nov 07, 2024 | By Edvard Csanyi
What is a Load Tap Changer (LTC)?
We all experienced the ocasional flickering of the house lights during evenings. This usually indicates a load tap changer (LTC) adjustment, or a sign that the bulb is about to drop dead, but that’s not the subject of this article… Read more
Nov 04, 2024 | By Edvard Csanyi
Failures, Testing and Protections Associated with Field Winding of a Generator
Generator field winding is an integral part of the generator set which is responsible for generating the magnetic field that induces the stator emf when the rotor rotates. Regulation of current in this winding with the help of an AVR… Read more
Oct 30, 2024 | By Umer Nasir
Grid Application & Technical Considerations for Battery Energy Storage Systems
In the quest for a resilient and efficient power grid, Battery Energy Storage Systems (BESS) have emerged as a transformative solution. This technical article explores the diverse applications of BESS within the grid, highlighting the critical technical considerations that enable…...
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Oct 28, 2024 | By Muhammad Kashif
Electrical thumb rules for switching, isolating and earthing
It is essential that the electrical engineers, or operators who will be in charge of switching, isolating, and earthing operations of the switchgear have a good understanding of the rules that must be followed. In addition, it is of the…...
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Oct 21, 2024 | By Edvard Csanyi
Star-delta starting used with large horsepower motors
Star-delta starting is frequently employed with high horsepower motors to mitigate inrush current during the start-up stage and to reduce starting torque. Star-delta starting involves initially connecting the motor stator windings in a star configuration during the motor startup phase,… Read more
Oct 16, 2024 | By Edvard Csanyi
So automated, yet so hackable. Is your country’s power grid safe from cyberattacks?
Yes, many of today’s power grids are very sophisticated and automated. Every single event and piece of equipment is tracked, controlled, measured, and protected. But things aren’t as bright as it seems. As we can see, it turns out that…...
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Oct 14, 2024 | By Edvard Csanyi
Practical lesson in grounding and bonding of Gas-Insulated Switchgear (GIS)
With the exception of SF6-to-air bushings terminals, all active portions of gas-insulated switchgear (GIS) are contained within grounded enclosures, which means that they are not susceptible to inadvertent contact. This makes gas-insulated switchgear intrinsically safe. In addition, numerous grounding procedures… Read more
Oct 09, 2024 | By Edvard Csanyi
Is storing excess energy in batteries worth integrating into the power system?
To be honest, the technology of energy storage in batteries is pretty hot nowadays. It’s smart for utilities worldwide to get in line to learn what it is and how countries can benefit from it. Battery Energy Storage Systems (BESS)…...
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Oct 07, 2024 | By Muhammad Kashif
The art of fault clearance in transmission systems: The logic of main and backup relays
The protection and fault clearance requires great attention. In terms of fault clearance protection, we categorize the relays into main protection relays and backup protection relays. The main protection relay is installed at all primary equipment, and it is essential… Read more
Sep 30, 2024 | By Edvard Csanyi
