Advancement in Power Transformer Infrastructure and Digital Protection PDF Download

Author: Nilesh Chothani
Publisher: Springer Nature
ISBN: 9819938708
Category : Electric power systems
Languages : en
Pages : 331

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Book Description
This book provides an overview of a power transformer infrastructure and comprehensive digital protection of it. It presents various protective methodologies available to protect the transformer from disturbances by taking care of mal-operation due to external disturbances and providing fine protection to the transformer. Though there are many protection methodologies available in the practice. However, these existing methodologies may mal-operate during external disturbances such as inrush, over-fluxing and short circuits. Hence, further research is needed in addition to the existing methods of protection in terms of more fault prediction accuracy, speedy operation, and lower protection cost with zero error in the detection of faults. The book will be useful reference for practitioners from academia and industrial applications. .

Author: Dharmesh Patel
Publisher: Springer Nature
ISBN: 9811567638
Category : Technology & Engineering
Languages : en
Pages : 217

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Book Description
This book provides a comprehensive overview of protection schemes used for power transformers and describes the internal fault conditions and external abnormalities that may disrupt the operation of a power transformer. It also highlights the issues of current protective schemes, which pose several challenges in terms of the detection of internal faults and abnormalities, including computational burden, reduced accuracy, difficulty to implement, increased cost, computational complexity, impermeability to high resistance faults (HRF), and malfunction in conditions like cross-country fault. To address these problems, the book develops an effective novel transformer protection scheme that can eliminate all the said difficulties using an innovative algorithm. Given its scope, it is a useful resource for researchers and practitioners working in the field of power system protection, allowing them to design novel protection schemes, and providing insights into the hardware validation of developed technique.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
Algorithms for digital protection of power transformers (PT) against internal faults have been presented in this doctoral dissertation. The presented algorithms for protection against short circuits of PT windings and for protection against ground-faults are based on time domain digital phase comparison. The digital phase comparator does not calculate the phase displacement between the signals which are being compared, but calculates the integral of the product of two signals over one basic half-period of the signals. The possibility of applying the phase comparison of the primary and secondary currents aimed at detecting internal faults in PTs has been investigated. In normal operating regimes and during faults outside the protection zone, the primary and secondary currents are in phase, while in case of internal short-circuit faults a phase shift appears between these two currents. In this dissertation, it has been shown that the phase shift between the primary and secondary currents during internal short-circuits depends both on the percentage of the short circuited windings and the network parameters as well as operating regime prior to the fault. It is possible to detect internal short-circuit faults by utilizing the phase comparison of the primary and secondary currents. The algorithm has been expanded by adding a digital filter for the dc component due to the existence of a decreasing dc current component in the fault current; in addition to this, the algorithm has been extended by adding the digital Fourier filter due to the existence of higher harmonics. In this way, the algorithm performance has been enhanced. Next, the algorithm that uses a new approach to solve the problem of misoperation of the transformer differential protection due to faults outside the protected zone accompanied by current transformer (CT) saturation has been presented. The new approach is based on the phase comparison of the primary and secondary currents, and is used as indication

Author: John Ciufo
Publisher: John Wiley & Sons
ISBN: 1119847362
Category : Technology & Engineering
Languages : en
Pages : 564

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Book Description
An all-in-one resource on power system protection fundamentals, practices, and applications Made up of an assembly of electrical components, power system protections are a critical piece of the electric power system. Despite its central importance to the safe operation of the power grid, the information available on the topic is limited in scope and detail. In Power System Protection: Fundamentals and Applications, a team of renowned engineers delivers an authoritative and robust overview of power system protection ideal for new and early-career engineers and technologists. The book offers device- and manufacturer-agnostic fundamentals using an accessible balance of theory and practical application. It offers a wealth of examples and easy-to-grasp illustrations to aid the reader in understanding and retaining the information provided within. In addition to providing a wealth of information on power system protection applications for generation, transmission, and distribution facilities, the book offers readers: A thorough introduction to power system protection, including why it's required and foundational definitions Comprehensive explorations of basic power system protection components, including instrument transformers, terminations, telecommunications, and more Practical discussions of basic types of protection relays and their operation, including overcurrent, differential, and distance relays In-depth examinations of breaker failure protection and automatic reclosing, including typical breaker failure tripping zones, logic paths, pedestal breakers, and more Perfect for system planning engineers, system operators, and power system equipment specifiers, Power System Protection: Fundamentals and Applications will also earn a place in the libraries of design and field engineers and technologists, as well as students and scholars of power-system protection.

Author: Lakneshwar Prakash Singh
Publisher: New Age International
ISBN: 9788122410532
Category : Digital electronics
Languages : en
Pages : 294

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Book Description
The Present Edition Of The Book Contains Almost All The Topics Connected With Protection Schemes. The Book, Which Consists Of Ten Main Chapters And Two Appendices, Starts With The Chapter On Introduction, And Includes Chapters On Fundamental And Basic Theory Of Protection Schemes, Definition Of Various Terms, Different Types Of Protective Relaying Schemes, Generalized Mathematical Theory Of Protective Relay, Relay As A Comparator, Single Input, Dual Input And Multi- Input Comparator, Different Types And Arrangement Of Protection Schemes For Various Components And Detailed Studies Of Electromechanical, Electronics, Static And Digital Relaying Schemes. The Digital Protection Of Synchronous Machines, Transformer And Transmission Line Based, Both On Fundamental And Travelling Wave Phenomena, Are Dealt With In Detail. Also Included In The Present Edition, Are The Related Topics Such As Theory And Design Of Dynamic Test Bench, P.C. Based Relay Setting And Coordination, P.C. Based Short Circuit Studies And Ultra High Speed Relaying Schemes.The Present Edition Which Contains Almost All The Topics Of Current Interest In The Area Of Protective Relaying, Will Certainly Be Very Useful To The Teachers, Students And Engineers Working With The Utilities. The Present Edition Is The Result Of Teaching By The Author To The Undergraduate And Postgraduate Level Classes And Supervising Several Doctoral And Master Thesis And Graduate Level Projects In The Area Of Power System Protection At The Indian Institute Of Technology, Kanpur, For More Than Two Decades. The Content Of The Present Edition Has Been Class-Tested For Several Years At The Undergraduate And Postgraduate Level Classes At L.L.T., Kanpur. It Has Also Been Tested In Several Intensive Courses Offered By The Author Under Qip And Other Schemes To The Teachers Of Academic Institutions And Also Engineers Working With Utilities.

Author: Allan Johns
Publisher: IET
ISBN: 9780863413032
Category : Technology & Engineering
Languages : en
Pages : 220

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Book Description
Digital protection is based on the use of computers in power line relaying. This book gives a detailed understanding of the principles and techniques underlying the application of digital technology and algorithms to protection.

Author: Ravindra P. Singh
Publisher: PHI Learning Pvt. Ltd.
ISBN: 8120336607
Category : Technology & Engineering
Languages : en
Pages : 339

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Book Description
Besides, the book contains a detailed treatment of protective schemes used to encounter fault conditions that may occur individually in generators, motors, transformers, busbars, and distribution circuits. Protection against switching surges and lightning is also discussed. The final chapter on power system management provides a simple introduction to that important area in order to emphasize the importance of optimal economic operation of power systems in which protective schemes under fault conditions play a crucial role towards continuity of electrical supply with minimum damage to life, equipment and property.

Author: Gerhard Ziegler
Publisher: John Wiley & Sons
ISBN: 3895786705
Category : Technology & Engineering
Languages : en
Pages : 287

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Book Description
Differential protection is a fast and selective method of protection against short-circuits. It is applied in many variants for electrical machines, trans-formers, 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.

Author: C. Russell Mason
Publisher:
ISBN:
Category :
Languages : en
Pages : 410

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Book Description

Author: Gerhard Ziegler
Publisher: Publicis
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 268

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Book Description
Differential protection is a fast, selective method of protection against short-circuits which is applied in many variants for electrical machines, transformers, busbars, and electric lines. Initially this book covers the fundamentals of analog and digital differential protection. The emphasis is then placed on the different variants of differential protection and its practical application, which is illustrated by concrete examples. 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 power protection, as well as the experienced user, entering the area of digital differential protection. Furthermore it serves as a reference guide for solving application problems.