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Category 'Protection' - Technical Articles

“Protection” category refers to technical articles dedicated to relay protection of various power substation and transmission & distribution equipment, such as low- medium- and high-voltage switchgear, transformers, capacitor banks, cables, transmission lines, electric motors and generators, and so on. Great attention is paid on circuit breaker schematics, such as tripping, closing and blocking coil arrangements, etc.

High Voltage

A roadmap for engineers seeking mastery in the language of electrical schematics

In the intricate landscape of electrical engineering, the ability to decipher and interpret schematic drawings is a skill that separates the adept from the novice. This technical article delves into the art of understanding schematics, unraveling the complexities through a…...

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Jan 03, 2024 | By

A roadmap for engineers seeking mastery in the language of electrical schematics
High Voltage

Fundamental concepts of schematic drawings: Going deeper into analysis and design intricacies

Welcome to this comprehensive technical article that delves into the intricacies of electrical schematics, shedding light on crucial elements such as loops, wire connections, auxiliary contacts, MCBs, contactors, circuit breakers, isolators, earth switches, and terminal blocks. In the world of…...

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Dec 25, 2023 | By

Fundamental concepts of schematic drawings: Going deeper into analysis and design intricacies
High Voltage

Fundamental concepts of schematic drawings for true field engineers (hands on HV schemes)

Schematic drawings, also known as electrical or circuit diagrams, are essential tools for understanding and designing electrical circuits. Mastering schematic drawing is a fundamental skill for field engineers, allowing them to effectively troubleshoot, maintain, and modify electrical schemes. This technical…...

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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.
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Dec 11, 2023 | By

Fundamental concepts of schematic drawings for true field engineers (hands on HV schemes)
Power Substation

Contract drawings for a power transformer – The checklist you should always follow

This technical article provides a collection of the common drawings that are sent by the manufacturer to the client for approval and reference. The goal of these drawings is to verify that the transformers that are going to be manufactured…...

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Dec 04, 2023 | By

Contract drawings for a power transformer - The checklist you should always follow
Medium Voltage

Capacitor banks in substations: Schemes, relay settings, and protective measures

Let’s discuss capacitor banks, but this time, not the basics. Let’s study the double-star capacitor bank configuration and protective techniques used in the substations. How important is to choose the right current transformer ratio, calculate rated and maximum overload currents,…...

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Nov 27, 2023 | By

Capacitor banks in substations: Schemes, relay settings, and protective measures
Power Substation

Mastering Interlock Logic and Schemes for a Gas-Insulated Substation (132 kV GIS Example)

As we delve deeper into this article, we will explore the various types of interlocking mechanisms used for Gas-Insulated Substation (GIS), their applications in substations, power plants, and electrical installations, as well as their significance in ensuring the sustained safety…...

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Oct 30, 2023 | By

Mastering Interlock Logic and Schemes for a Gas-Insulated Substation (132 kV GIS Example)
Power Substation

A comprehensive guide to voltage transformer (VT) circuit supervision techniques

Voltage transformer supervision, often referred to as VT fuse fail supervision relay, plays a pivotal role in safeguarding electrical systems. Its primary objective is to detect any potential failure within the voltage transformer (VT) circuit. This raises the important question:…...

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Oct 16, 2023 | By

A comprehensive guide to voltage transformer (VT) circuit supervision techniques
Power Substation

The art of the transmission switchyard design: The physical layout engineering (Case study included)

This article aims to shed some light on the so-called physical engineering activity in switchyard design in conjunction with some engineering computations. The physical layout engineering tackles the plot plan and SLD to optimize the area and coordinate with all…...

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Oct 02, 2023 | By

The art of the transmission switchyard design: The physical layout engineering (Case study included)
Premium Content

Mastering stability test of power transformer: Differential and Restricted Earth Fault (REF) protection

This technical article discusses the essentials of transformer differential protection and restricted earth fault protection schemes, contrasting the two and elaborating on why the latter is necessary. Furthermore, it reveals the outcomes of stability tests performed on a 502 MVA…...

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Sep 25, 2023 | By

Mastering stability test of power transformer: Differential and REF protection
Premium Content

A comprehensive guide to correct calculation for transformer differential relay settings

In this technical article, we will delve into the comprehensive methodology of calculating the differential relay settings for the GE P642 relay. Each step of the process will be explored, from data collection to final setting determination. By following these…...

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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.
Spring Gift! - 20% Off on Pro Membership Plan with coupon 110KVAC
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Aug 28, 2023 | By

A comprehensive guide to correct calculation for transformer differential relay settings


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