Автор: Isak Olsen Название: Electrical Generation and Distribution Systems and Power Quality Disturbances ISBN: 1681172968 ISBN-13(EAN): 9781681172965 Издательство: Gazelle Book Services Рейтинг: Цена: 220210.00 T Наличие на складе: Невозможна поставка. Описание: Electricity generation is the first process in the delivery of electricity to consumers. The fundamental principles of electricity generation were discovered during the 1820s and early 1830s by the British scientist Michael Faraday. His basic method is still used today: electricity is generated by the movement of a loop of wire, or disc of copper between the poles of a magnet. Before Michael Faraday had discovered his famous law of electromagnetic induction, battery were the only source of electric power. After that, DC generator was developed, but it could produce only a few hundred volts of electric power and naturally this low voltage power could not transmitted efficiently to a large distance. In the latter half of eighteen centuries, AC electric power generation, transmission and distribution came into the picture. In an AC system, it became possible to step up voltage of electric power to desire level for efficient transmission to a long distance. After that 3-phase induction motor was developed which was much simpler in construction. Generation, transmission and distribution of AC power were much easier than DC power; hence very fast AC power system became the most popular means of electric power. Electricity is most often generated at a power station by electromechanical generators, primarily driven by heat engines fueled by chemical combustion or nuclear fission but also by other means such as the kinetic energy of flowing water and wind. Other energy sources include solar photovoltaics and geothermal power and electrochemical batteries. Additionally, the presence of a static converter as output interface of the generating plants introduces voltage and current harmonics into the electrical system that negatively affect system power quality. By integrating distributed power generation systems closed to the loads in the electric grid, we can eliminate the need to transfer energy over long distances through the electric grid. This book, Electrical Generation and Distribution Systems and Power Quality Disturbances, reveals the different power generation and distribution systems with an analysis of some types of existing disturbances and a study of different industrial applications such as battery charges.
Автор: Hasad Demirci Название: Low-Power VLSI Circuits and Systems ISBN: 1681171600 ISBN-13(EAN): 9781681171609 Издательство: Gazelle Book Services Рейтинг: Цена: 203050.00 T Наличие на складе: Невозможна поставка. Описание: Automatic control is the applications of control theory for regulation of processes without direct human intervention. In the simplest type of an automatic control loop, a controller compares a measured value of a process with a desired set value, and processes the resulting error signal to change some input to the process, in such a way that the process stays at its set point despite disturbances. This closed-loop control is an application of negative feedback to a system. The book, Automation Control Systems, prepares carefully, the background of each topic. Detail explanations of each step given make it easy for the students to understand the complicated derivations. Most of the theoretical topic are supported with practical illustrations. It covers engineering technologies in a timely manner for two important subjects automatic control systems. In particular, it allows researchers and students to become familiar with state-of-the-art developments in the field, and it also helps engineers and practitioners enhance their productivity with the latest technology.
Автор: Faouzi Derbel Название: Power Electrical Systems: Extended Papers from the Multiconference on Signals, Systems and Devices 2014 ISBN: 3110446154 ISBN-13(EAN): 9783110446159 Издательство: Walter de Gruyter Цена: 74320.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: THE SERIES: ADVANCES IN SYSTEMS, SIGNALS AND DEVICES Systems, Signals & Devices is one of the large specializations in electrical engineering, mechanical engineering and computer sciences. It derives input from physics, mathematics and is an indispensable feature of all natural- and life sciences in research and in application. The new series “Advances in Systems, Signals and Devices” presents original publications mainly from speakers on the International Multi-Conference on Systems, Signal and Devices but also from other international authors. The Conference is a forum for researchers and specialists in different fi elds covering all types of sensors and measurement systems.
"Sound earthing & grounding of the electrical installation is the fundamental requirement for safe and reliable operation. There is a lot of misconception among practicing engineers (both design and field) on this topic. Study of this application guide will bring clarity to the reader on this topic.
Earthing methods for different applications like EHV Switchyard, MV and LV systems and earthing application to special areas like Solar farms, GIS terminations, C&I (Control & Instrumentation) systems in power and industrial plants are covered. Remarks on mis-interpretation of IE rules are made.
The reader will understand why different grounding methods are adopted at different voltage levels. Relationship between Grounding and Transformer Ampere Turns Balance theory is clearly brought out which is the cornerstone of grounding exercise. Features of ungrounded and grounded systems are covered in detail including demystification of zig zag connection. Ready to use spread sheets for sizing of NGT/NGR are given.
Supported by copious illustrations from field experience, fundamental concepts of grounding are explained by solving problems of gradually increasing complexity.
Various practices adopted for Neutral grounding of generator are described.
Students will tremendously benefit by studying this guide as it combines theory with lot of practical examples. He/She will acquire the necessary skills upfront needed by industry.
The design engineer or consultants will find the guide very useful to perform optimum design.
Origin of many nuisance tripping or power quality issues is poor earthing/grounding. The practicing and field engineers will be able to address many of the problems encountered at site due to faulty earthing and grounding
This new edition of the classic on electromagnetic transient (EMT) simulation gives an up-to-date overview of the area. Thoroughly revised, with entirely new chapters, it covers new topics including: simulation of very large networks; modelling of power electronic devices; integration of renewable energy sources; and real-time simulation of complex systems. Extensive appendices with additional explanations and modelling code samples are also included. Ideal for academics, postgraduates and professionals working in power system transients.
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