Protective Relays Their Theory and Practice PDF Download

Author: A.R. van C. Warrington
Publisher: Springer Science & Business Media
ISBN: 9780412153808
Category : Technology & Engineering
Languages : en
Pages : 470

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Book Description
This book should be of interest to electrical system protection engineers and postgraduate students.

Author: Vladimir Gurevich
Publisher: CRC Press
ISBN: 1420026410
Category : Technology & Engineering
Languages : en
Pages : 698

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Book Description
Electric relays pervade the electronics that dominate our world. They exist in many forms, fulfill many roles, and each have their own behavioral nuances and peculiarities. To date, there exists no comprehensive reference surveying the broad spectrum of electric relays, save one-Electric Relays: Principles and Applications. This ambitious work is not only unique in its scope, but also in its practical approach that focuses on the operational and functional aspects rather than on theory and mathematics. Accomplished engineer Dr. Vladimir Gurevich builds the presentation from first principles, unfolding the concepts and constructions via discussion of their historical development from the earliest ideas to modern technologies. He uses a show-not-tell approach that employs nearly 1300 illustrations and reveals valuable insight based on his extensive experience in the field. The book begins with the basic principles of relay construction and the major functional parts, such as contact and magnetic systems. Then, it devotes individual chapters to the various types of relays. The author describes the principles of function and construction for each type as well as features of several relays belonging to a type that operate on different principles. Remarkably thorough and uniquely practical, Electric Relays: Principles and Applications serves as the perfect introduction to the plethora of electric relays and offers a quick-reference guide for the experienced engineer.

Author: Anthony M. Sleva
Publisher: CRC Press
ISBN: 142001417X
Category : Technology & Engineering
Languages : en
Pages : 368

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Book Description
Improve Failure Detection and Optimize Protection In the ever-evolving field of protective relay technology, an engineer’s personal preference and professional judgment are as important to power system protection as the physical relays used to detect and isolate abnormal conditions. Invaluable Insights from an Experienced Expert Protective Relay Principles focuses on probable power system failure modes and the important characteristics of the protective relays used to detect these postulated failures. The book presents useful new concepts in a way that is easier to understand because they are equally relevant to older, electromechanical and solid-state relays, and newer, more versatile microprocessor-based relays. It introduces the applications, considerations, and setting philosophies used in transmission-line, distribution-line, and substation applications, covering concepts associated with general system operations and fault detection. Topics include relay load limits, cold load pickup, voltage recovery, and arc flash. The author also delves into the philosophies that engineers employ in both urban and rural areas, with a detailed consideration of setpoint function. Analysis of Key Concepts That Are Usually Just Glossed Over This versatile text is ideal for new engineers to use as a tutorial before they open the instruction manuals that accompany multi-function microprocessor-based relays. Guiding readers through the transient loading conditions that can result in relay misoperation, the author elaborates on concepts that are not generally discussed, but can be very helpful in specific applications. Readers will come away with an excellent grasp of important design considerations for working with overcurrent, over- and undervoltage, impedance, distance, and differential type relay functions, either individually or in combination. Also useful for students as a textbook, this book includes practical examples for many applications, and offers guidance for more unusual ones.

Author: Leslie Hewitson
Publisher: Newnes
ISBN: 0750663979
Category : Science
Languages : en
Pages : 289

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Book Description
Designed to increase understanding on a practical and theoretical basis, this invaluable resource provides engineers, plant operators, electricians and technicians with a thorough grounding in the principles and practicalities behind power system protection. Coverage of the fundamental knowledge needed to specify, use and maintain power protection systems is included, helping readers to increase plant efficiency, performance and safety. Consideration is also given to the practical techniques and engineering challenges encountered on a day-to-day basis, making this an essential resource for all.

Author: C L Wadhwa
Publisher: New Age International
ISBN: 9788122417739
Category : Electric power
Languages : en
Pages : 918

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Book Description
In A Clear And Systematic Manner, This Book Presents An Exhaustive Exposition Of The Various Dimensions Of Electrical Power Systems. Both Basic And Advanced Topics Have Been Thoroughly Explained And Illustrated Through Solved Examples.Salient Features * Fundamentals Of Power Systems, Line Constant Calculations And Performance Of Overhead Lines Have Been Discussed * Mechanical Design Of Lines, Hvdc Lines, Corona, Insulators And Insulated Cables Have Been Explained * Voltage Control, Neutral Grounding And Transients In Power Systems Explained * Fault Calculation, Protective Relays Including Digital Relays And Circuit Breakers Discussed In That Order * Power Systems Synchronous Stability And Voltage Stability Explained * Insulation Coordination And Over Voltage Protection Explained * Modern Topics Like Load Flows, Economic Load Dispatch, Load Frequency Control And Compensation In Power System Nicely Developed And Explained Using Flow Charts Wherever Required * Zbus Formulation, Power Transformers And Synchronous Machines As Power System Elements Highlighted * Large Number Of Solved Examples, Practice Problems And Multiple Choice Questions Included. Answers To Problems And Multiple-Choice Questions ProvidedWith All These Features, This Is An Invaluable Textbook For Undergraduate Electrical Engineering Students Of Indian And Foreign Universities. Amie, Gate, All Competitive Examination Candidates And Practising Engineers Would Also Find This Book Very Useful.

Author: Omar Salah Elsayed Atwa
Publisher: Academic Press
ISBN: 0128173122
Category : Technology & Engineering
Languages : en
Pages : 420

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Book Description
Practical Power System and Protective Relays Commissioning is a unique collection of the most important developments in the field of power system setup. It includes simple explanations and cost affordable models for operating engineers. The book explains the theory of power system components in a simple, clear method that also shows how to apply different commissioning tests for different protective relays. The book discusses scheduling for substation commissioning and how to manage available resources to efficiently complete projects on budget and with optimal use of resources. - Explains the theory of power system components and how to set the different types of relays - Discusses the time schedule for substation commissioning and how to manage available resources and cost implications - Details worked examples and illustrates best practices

Author: Colin Bayliss
Publisher: Elsevier
ISBN: 0080468136
Category : Technology & Engineering
Languages : en
Pages : 1039

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Book Description
Dramatic power outages in North America, and the threat of a similar crisis in Europe, have made the planning and maintenance of the electrical power grid a newsworthy topic.Most books on transmission and distribution electrical engineering are student texts that focus on theory, brief overviews, or specialized monographs. Colin Bayliss and Brian Hardy have produced a unique and comprehensive handbook aimed squarely at the engineers and planners involved in all aspects of getting electricity from the power plant to the user via the power grid. The resulting book is an essential read, and a hard-working reference for all engineers, technicians, managers and planners involved in electricity utilities, and related areas such as generation, and industrial electricity usage.* An essential read and hard*working ref

Author: Roozbeh Parsa
Publisher: Stanford University
ISBN:
Category :
Languages : en
Pages : 134

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Book Description
CMOS scaling has been very successful in generating small, fast, low cost electronics. However, in advanced CMOS nodes, the total power consumption is dominated by the static power dissipation, which is caused greatly by gate leakage, short channel effects, and finite subthreshold slope. Further scaling of CMOS only exacerbates these problems. Nanoelectromechanical (NEM) relays are promising devices for assisting CMOS systems by reducing the static power dissipation due to their zero leakage current, infinite subthreshold slope, and scalable actuation voltage. Electrostatically-actuated NEM relays are devices where the operation is based on the deformation of a flexible beam under the influence of electrostatic force in order to create a conducting path between two electrodes. This work studies the fabrication process development of sidewall-coated laterally-actuated NEM relays. The developed process enables decoupling of the mechanical and electrical properties of the relay, allowing independent optimization of each property and paving the path for creating a back-end-of-line (BEOL) compatible process. Furthermore, a major failure mechanism of NEM relays is beam-to-gate shorting after actuation. To ameliorate this problem, new designs with improved mechanical properties were simulated and tested. These designs utilize a stiff electrode and a compliant beam to eliminate undesired beam deformation near the gate electrode. These results in addition to variation studies, stress outcomes, and basic logic functionality of the NEM relays are shown.

Author: Paul Gill
Publisher: CRC Press
ISBN: 1574446568
Category : Technology & Engineering
Languages : en
Pages : 1002

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Book Description
The second edition of a bestseller, this definitive text covers all aspects of testing and maintenance of the equipment found in electrical power systems serving industrial, commercial, utility substations, and generating plants. It addresses practical aspects of routing testing and maintenance and presents both the methodologies and engineering basics needed to carry out these tasks. It is an essential reference for engineers and technicians responsible for the operation, maintenance, and testing of power system equipment. Comprehensive coverage includes dielectric theory, dissolved gas analysis, cable fault locating, ground resistance measurements, and power factor, dissipation factor, DC, breaker, and relay testing methods.

Author: Vladimir Gurevich
Publisher: CRC Press
ISBN: 1351837052
Category : Technology & Engineering
Languages : en
Pages : 857

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Book Description
Electric relays pervade the electronics that dominate our world. They exist in many forms, fulfill many roles, and each have their own behavioral nuances and peculiarities. To date, there exists no comprehensive reference surveying the broad spectrum of electric relays, save one-Electric Relays: Principles and Applications. This ambitious work is not only unique in its scope, but also in its practical approach that focuses on the operational and functional aspects rather than on theory and mathematics. Accomplished engineer Dr. Vladimir Gurevich builds the presentation from first principles, unfolding the concepts and constructions via discussion of their historical development from the earliest ideas to modern technologies. He uses a show-not-tell approach that employs nearly 1300 illustrations and reveals valuable insight based on his extensive experience in the field. The book begins with the basic principles of relay construction and the major functional parts, such as contact and magnetic systems. Then, it devotes individual chapters to the various types of relays. The author describes the principles of function and construction for each type as well as features of several relays belonging to a type that operate on different principles. Remarkably thorough and uniquely practical, Electric Relays: Principles and Applications serves as the perfect introduction to the plethora of electric relays and offers a quick-reference guide for the experienced engineer.