Protective Relaying

Theory and Applications

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Author: Walter A. Elmore

Publisher: CRC Press

ISBN: 9780824709723

Category: Technology & Engineering

Page: 432

View: 2459

Targeting the latest microprocessor technologies for more sophisticated applications in the field of power system short circuit detection, this revised and updated source imparts fundamental concepts and breakthrough science for the isolation of faulty equipment and minimization of damage in power system apparatus. The Second Edition clearly describes key procedures, devices, and elements crucial to the protection and control of power system function and stability. It includes chapters and expertise from the most knowledgeable experts in the field of protective relaying, and describes microprocessor techniques and troubleshooting strategies in clear and straightforward language.

Protective Relaying

Principles and Applications

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Author: J. Lewis Blackburn

Publisher: N.A

ISBN: N.A

Category: Technology & Engineering

Page: 545

View: 6956

Pilot Protective Relaying

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Author: Elmore

Publisher: CRC Press

ISBN: 9780824781958

Category: Technology & Engineering

Page: 184

View: 1518

This text concentrates on the fundamentals of protective relaying and aims to provide lasting information in intelligible language. It covers the relative qualities of modern transmission line systems, communications channels, three-terminal applications and program design for microprocessors, and also supplies an encyclopaedic bibliography listing professional papers useful to the relay engineer.

Transient Analysis of Power Systems

Solution Techniques, Tools and Applications

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Author: Juan A. Martinez-Velasco

Publisher: John Wiley & Sons

ISBN: 1118352343

Category: Technology & Engineering

Page: 656

View: 1684

Numerical Differential Protection

Principles and Applications

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Author: Gerhard Ziegler

Publisher: John Wiley & Sons

ISBN: 3895786705

Category: Technology & Engineering

Page: 287

View: 915

Differential protection is a fast and selective method of protection against short-circuits. It is applied in many variants for electrical machines, transformers, busbars, and electric lines. Initially this book covers the theory and fundamentals of analog and numerical differential protection. Current transformers are treated in detail including transient behaviour, impact on protection performance, and practical dimensioning. An extended chapter is dedicated to signal transmission for line protection, in particular, modern digital communication and GPS timing. The emphasis is then placed on the different variants of differential protection and their practical application illustrated by concrete examples. This is completed by recommendations for commissioning, testing and maintenance. Finally the design and management of modern differential protection is explained by means of the latest Siemens SIPROTEC relay series. As a textbook and standard work in one, this book covers all topics, which have to be paid attention to for planning, designing, configuring and applying differential protection systems. The book is aimed at students and engineers who wish to familiarise themselves with the subject of differential protection, as well as the experienced user entering the area of numerical differential protection. Furthermore, it serves as a reference guide for solving application problems. For the new edition all contents have been revised, extended and updated to the latest state-of-the-art of protective relaying.

Protective Relay Principles

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Author: Anthony M. Sleva

Publisher: CRC Press

ISBN: 9781420014174

Category: Technology & Engineering

Page: 368

View: 9992

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.

Electromagnetic Transient Analysis and Novel Protective Relaying Techniques for Power Transformers

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Author: Xiangning Lin,Jing Ma,Qing Tian,Hanli Weng

Publisher: John Wiley & Sons

ISBN: 1118653858

Category: Technology & Engineering

Page: 320

View: 7817

An advanced level examination of the latest developments in power transformer protection This book addresses the technical challenges of transformer malfunction analysis as well as protection. One of the current research directions is the malfunction mechanism analysis due to nonlinearity of transformer core and comprehensive countermeasures on improving the performance of transformer differential protection. Here, the authors summarize their research outcomes and present a set of recent research advances in the electromagnetic transient analysis, the application on power transformer protections, and present a more systematic investigation and review in this field. This research area is still progressing, especially with the fast development of Smart Grid. This book is an important addition to the literature and will enhance significant advancement in research. It is a good reference book for researchers in power transformer protection research and a good text book for graduate and undergraduate students in electrical engineering. Chapter headings include: Transformer differential protection principle and existing problem analysis; Malfunction mechanism analysis due to nonlinearity of transformer core; Novel analysis tools on operating characteristics of Transformer differential protection; Novel magnetizing inrush identification schemes; Comprehensive countermeasures on improving the performance of transformer differential protection An advanced level examination of the latest developments in power transformer protection Presents a new and systematic view of power transformer protection, enabling readers to design new models and consider fresher design approaches Offers a set of approaches to optimize the power system from a microeconomic point of view

Digitaler Distanzschutz

Grundlagen und Anwendung

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Author: Gerhard Ziegler

Publisher: John Wiley & Sons

ISBN: 9783895783203

Category: Electric apparatus and appliances

Page: 392

View: 3685

Der Distanzschutz bildet die Basis des Netzschutzes in Übertragungsnetzen und vermaschten Verteilungsnetzen. Das Buch behandelt die Grundlagen des Distanzschutzes und die Besonderheiten der Digitaltechnik. Einen Schwerpunkt bildet die Anwendung der digitalen Distanzrelais im Verteilungs- und Übertragungsnetz. Für die zweite Auflage wurden alle Inhalte überarbeitet und insbesondere die Produktbeschreibungen auf den neuesten Stand gebracht. Das Buch wendet sich an Ingenieure und Studenten, die sich in das Gebiet des Selektivschutzes einarbeiten wollen, aber auch an praxiserfahrene Anwender, die den Einstieg in die digitale Distanzschutztechnik suchen. Außerdem dient es als Nachschlagewerk zur Lösung von Problemen in der praktischen Anwendung.

Power System Protection 1

Principles and Components

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Author: Electricity Training Association,Institution of Electrical Engineers

Publisher: IET

ISBN: 0852968345

Category: Technology & Engineering

Page: 525

View: 1463

A set of four volumes compiled by leading authorities in the electricity supply industry and manufacturing companies to provide a comprehensive treatment of power system protection.

Protective Relays

Their Theory and Practice

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Author: Albert Russell van Cortlandt Warrington

Publisher: Halsted Press

ISBN: N.A

Category: Technology & Engineering

Page: 434

View: 4555

Digital Signal Processing in Power System Protection and Control

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Author: Waldemar Rebizant,Janusz Szafran,Andrzej Wiszniewski

Publisher: Springer Science & Business Media

ISBN: 9780857298027

Category: Technology & Engineering

Page: 316

View: 9820

Digital Signal Processing in Power System Protection and Control bridges the gap between the theory of protection and control and the practical applications of protection equipment. Understanding how protection functions is crucial not only for equipment developers and manufacturers, but also for their users who need to install, set and operate the protection devices in an appropriate manner. After introductory chapters related to protection technology and functions, Digital Signal Processing in Power System Protection and Control presents the digital algorithms for signal filtering, followed by measurement algorithms of the most commonly-used protection criteria values and decision-making methods in protective relays. A large part of the book is devoted to the basic theory and applications of artificial intelligence techniques for protection and control. Fuzzy logic based schemes, artificial neural networks, expert systems and genetic algorithms with their advantages and drawbacks are discussed. AI techniques are compared and it is also shown how they can be combined to eliminate the disadvantages and magnify the useful features of particular techniques. The information provided in Digital Signal Processing in Power System Protection and Control can be useful for protection engineers working in utilities at various levels of the electricity network, as well as for students of electrical engineering, especially electrical power engineering. It may also be helpful for other readers who want to get acquainted with and to apply the filtering, measuring and decision-making algorithms for purposes other than protection and control, everywhere fast and on-line signal analysis is needed for proper functioning of the apparatus.

The Relay Protection of High Voltage Networks

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Author: Yong Zhou

Publisher: Elsevier

ISBN: 1483226085

Category: Technology & Engineering

Page: 576

View: 4248

The Relay Protection of High Voltage Networks presents the theoretical aspects of relay protection of high-voltage electrical networks. This book covers a variety of topics, including sequence networks for complex asymmetrical states, vector locus method, theories of symmetrical component filters, and power directional devices. Organized into 10 chapters, this book begins with an overview of the use of sequence networks. This text then examines the relay protection of high-voltage networks with three-phase and single-phase tripping. Other chapters consider the principles of auxiliary devices, which serve for the selection of the faulty phase and for preventing the incorrect operation of protective gear during swings and for faulty conditions in the secondary windings of voltage transformers. The final chapter deals with the stability of parallel working of power stations in a system. This book is a valuable resource for engineers, student, research workers, and readers specializing in the field of relay protection.

Digital Protection for Power Systems

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Author: Allan T. Johns,Salman K. Salman

Publisher: IET

ISBN: 9780863413032

Category: Technology & Engineering

Page: 203

View: 2486

This book is a long awaited comprehensive introduction to the protection of electrical power systems using computer-based methods (i.e. digital relays). The treatment is logically structured, taking the reader through the mathematics and principles underlying the development and implementation of the major algorithms underlying different protection techniques. They can be applied to protection of generator transformers, lines, switchgear and cable circuits: the main components of transmission and distribution systems. The book deals with the research and development activity in the field of digital protection during the last 15 years. The reader will become familiarised with the fast developing field of power system protection using computers and microcomputers. "This book provides a full introduction for senior undergraduates and graduates, and acts as a sound reference for engineers already practising in this area."

Wärmetechnik

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Author: Klaus Endrullat,Peter Epinatjeff,Dieter Petzold,Hubertus Protz

Publisher: Springer-Verlag

ISBN: 3662070278

Category: Technology & Engineering

Page: 468

View: 6789

Die rationelle Energieverwendung im Bereich wärmetechnischer Systeme hat im mittel europäischen Raum einen hohen Stellenwert, da bei der überwiegenden Anzahl der Haus halte und Gewerbebetriebe der Energieverbrauch zur Wärmeerzeugung den größten An teil am Gesamtenergieverbrauch hat. Das Ziel des vorliegenden Bandes ist es, dem Leser die Vorgehensweise 'zur Beurteilung wärmetechnischer Systeme und energiesparender Maßnahmen zu vermitteln. Schwerpunktmäßig werden die Heiz- und Raumlufttechnik im Umfeld des Menschen behandelt, während das Gebiet der Prozeßwärme für die indu strielle Anwendung aus Gründen des Umfanges nur ansatzweise erörtert werden konnte. Der Anspruch dieses Buches liegt auf einer Ebene, welche bewußt nicht die Einzellösung hervorhebt, da sich das Optimum eines Gesamtsystems noch längst nicht einstellen muß, wenn die Teilsysteme optimiert sind. Das Verständnis der Verzahntheit des vorliegenden Gebietes mit anderen Fachgebieten ist deshalb eine wesentliche Voraussetzung für ko ordinierte Maßnahmen zur rationellen Energieverwendung. Diesem Umstand wird durch zahlreiche qualitative Systembetrachtungen und Zahlenbeispiele Rechnung getragen. Im ersten Abschnitt werden die speziellen Grundlagen der Heiz- und Raumlufttechnik be handelt. Dazu zählen Kenntnisse über technische Funktionsabläufe und die Behaglich keitsanforderungen des Menschen, zu deren Aufrechterhaltung diese Anlagen gebaut werden. Anlagentechnische Maßnahmen zur Energieeinsparung müssen sich immer an der Erfüllung der Behaglichkeitsanforderungen messen lassen. Weiterhin gehört es auch zu einer wirkungsvollen Energieberatung, Maßnahmen an gebäudetechnischen Anlagen als Teilmaßnahme am Gesamtsystem Gebäude zu verstehen, weil durch den Umfang der Systemverbesserung (energetisch-ökonomisch) letztlich die Rangfolge der durchzuführen den Maßnahmen bestimmt wird.