Energy and Power
Once Again, the Entire Island of Cuba Falls Into Darkness as Power Grid Collapses
HAVANA, December 4 – Cuba announced the initiation of power restoration following the collapse of the island’s electrical grid, marking the latest incident in a series of statewide blackouts that highlight the deteriorating condition of the country’s power generating infrastructure…. Read more
Dec 04, 2024 | By Edvard Csanyi
Energy and Power
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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
Energy and Power
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
News
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
Power Substation
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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
Power Substation
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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
Maintenance
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
Power Substation
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
Power Substation
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
Maintenance
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
Power Substation
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
Power Substation
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Mastering Distance Protection and Calculations Part 2: Never Mess Up Protection Accuracy
The first part of this article series delved into the fundamentals of overcurrent protection, exploring the intricacies of relay coordination, the impact of source impedance, and the application of distance protection. These foundational concepts laid the groundwork for understanding how…...
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Sep 23, 2024 | By Muhammad Kashif
Power Substation
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Mastering Distance Protection and Calculations Part 1: Advice and Serious Warnings
In 2004, I embarked on an intensive nine-month training program in protection and instrumentation. This experience laid the foundation for my deep understanding of substation protection systems, combining both theoretical knowledge and practical application. The first protection scheme we delved…...
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Sep 09, 2024 | By Muhammad Kashif
Power Substation
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Dos and don’ts in site testing and commissioning distribution and transmission plants
The objective of the site inspection and test plan for testing and commissioning is to establish a comprehensive framework for conducting site testing and commissioning activities. It’s as simple as that! The site testing and commissioning of a transmission or…...
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Sep 02, 2024 | By Edvard Csanyi
Power Substation
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Mechanical Check, Visual Inspection and Electrical Test of the Substation Grounding System (2)
At the beginning of my career in 2005, I had the opportunity to work at a 500kV substation with the National Transmission and Dispatch Company in Pakistan. During this time, I was introduced to various tools and techniques that were…...
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Aug 26, 2024 | By Muhammad Kashif
