Power Substation
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Mastering Distance Protection and Calculations: 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
Energy and Power
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Mastering DC supply selection schemes for HV control and protection panels
In this article, we will explore various aspects related to DC supply selection schemes, the rationale behind their necessity, and the importance of redundancy and reliability in maintaining uninterrupted power to control and protection panels. Additionally, we will delve into…...
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This content is not available in your premium membership plan. Please upgrade your plan in order to access this content. You can choose an annually based Basic, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers.With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
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Mar 11, 2024 | By Muhammad Kashif
Power Substation
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Comprehensive Guide to Secondary Injection Testing of the Current Transformers (Part 2)
Welcome to the second part of our three-part series on current transformers (CTs) and their secondary circuits. In Part 1, we explored the fundamental principles of CT operation, the importance of secondary injection testing, the concept of “burden,” considerations for…...
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This content is not available in your premium membership plan. Please upgrade your plan in order to access this content. You can choose an annually based Basic, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers.With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
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Jul 03, 2023 | By Muhammad Kashif
Power Substation
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The good and bad practices in the commissioning of current transformers in a substation
In the previous technical article (check here), we delved into primary injection testing and the commissioning of current transformers. We explored the primary and secondary sides of current transformers, learned key concepts and terminology used by protection engineers, and examined…...
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This content is not available in your premium membership plan. Please upgrade your plan in order to access this content. You can choose an annually based Basic, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers.With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
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Jun 05, 2023 | By Muhammad Kashif
Protection
Breaker failure protection applications of modern numerical distance relays
Modern numerical distance relays are equipped with a wide range of protection features, including overcurrent, overvoltage, undervoltage, underfrequency, overfrequency, breaker failure, synchronism check, power swing blocking and tripping, pilot protection schemes, digital relay-to-relay communications capability, logic programmability, and sophisticated math… Read more
Aug 01, 2022 | By Edvard Csanyi
Power Substation
The essentials of necessary auxiliary relays in tripping and control applications
Tripping circuit breakers and operating alarms in control and protection applications usually require more than one relay contact. Tripping relays are used to multiply the number of contacts available, provide isolation between the source and system operating element and meet… Read more
Feb 28, 2022 | By Edvard Csanyi
Protection
Critical aspects of a distance non-unit relay protection (you should understand)
Non-unit protection consists of circuits that measure and compare the voltages and currents at the relaying point. It is able to determine the location of the fault from these values. It generally only responds to faults in one direction. Non-unit… Read more
Jul 15, 2019 | By Edvard Csanyi
Energy and Power
The essence of LV circuit breakers – Releases, tripping curves, characteristics and limitation
A circuit breaker is both a circuit-breaking device that can make, withstand and break currents whose intensity is at most equal to its rated current (In), and a protection device that can automatically break overcurrents which generally occur following faults… Read more
Dec 17, 2018 | By Edvard Csanyi
Energy Generation
Protection Of The Power System Heart – The Generator
This technical article gives key points about the generator protection. To recover the generator from various kinds of faults, the generator protection scheme of the plant must be designed in such a way that groupings of protection are made respect to… Read more
Dec 05, 2018 | By Edvard Csanyi
Energy and Power
5 special applications of residual current devices (RCDs)
Normally residual current devices (RCDs) are used for protection against direct and indirect contacts. An RCD can detect low leakage currents that could flow through the body of a person. It thus provides additional protection if the normal protection means… Read more
Aug 16, 2017 | By Edvard Csanyi
Premium Content
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Transformer protection systems and their primary switching arrangements
The protection of power transformers is not just a question of detecting faults within the windings, cores, or tank. It’s very often a question of how the transformer is integrated into the station or system. The detection and clearing of…...
Membership Upgrade Required
This content is not available in your premium membership plan. Please upgrade your plan in order to access this content. You can choose an annually based Basic, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers.With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
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Jun 12, 2017 | By Edvard Csanyi
Energy and Power
Features of 3 circuit protection devices (MCB, RCCB and RCBO) you have probably forgotten
Traditionally, fuses were the main devices chosen for final circuit protection, up until the 1970’s when circuit breaker technology started to become dominant. Today, the three principle circuit protection devices are: Miniature Circuit Breakers (MCBs), Residual Current Circuit Breakers (RCCBs)… Read more
Apr 25, 2016 | By Edvard Csanyi
Energy and Power
The Basics Of Molded Case Circuit Breakers You MUST Know
Molded case circuit breakers are interrupting devices with self-contained, current-responsive elements. These breakers are assembled as an integral unit in a supported and enclosed housing of insulating material. Depending on the amount of protection required, these breakers can sense internally… Read more
Feb 27, 2016 | By Edvard Csanyi
Energy and Power
Electrical life (durability) of LV circuit breakers due to the switching operations
According to the standard IEC 947-2, there is actually no defined stipulation regarding the requirements of electrical life of a circuit breaker. The numbers of switching operations which a circuit breaker under no-load, normal load, overload and short-circuit conditions has… Read more
Dec 01, 2014 | By Edvard Csanyi
Energy and Power
4 essential qualities of electrical protection
In generating stations, all electrical circuits and machines are subject to faults. A fault is generally caused by the breakdown of insulation between a conductor and ground or between conductors due to a variety of reasons. The result is a… Read more
Nov 03, 2014 | By Edvard Csanyi
