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Author: Noé Alejandro Mesa Quintero
Publisher: Ewe Editorial Acad MIA Espa Ola
ISBN: 9783846579992
Category :
Languages : es
Pages : 184
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Book Description
Una de las nuevas tendencias en la coordinacion de protecciones es la llamada Coordinacion Optima, la cual utiliza metodologias de optimizacion, heuristica o matematica, para realizar ajustes en las protecciones, garantizando la continuidad en el servicio. En la actualidad la metodologia de coordinacion utilizada es el criterio de un experto (o grupo de expertos), que se basa en el conocimiento de la red electrica y el historial de fallas que se han presentado, esta estrategia de ajuste ha producido algunos inconvenientes en las redes, sobre todo cuando se presentan eventos para los cuales no se tienen precedentes, produciendo respuestas incorrectas o excesivas en los sistemas de proteccion. Con base en esto, se presenta una investigacion sobre una metodologia de coordinacion optima de protecciones en Sistemas Electricos de Potencia, basada en Algoritmos Geneticos de tipo Chu-Beasley, que complemente el criterio de un experto."
Author: Noé Alejandro Mesa Quintero
Publisher: Ewe Editorial Acad MIA Espa Ola
ISBN: 9783846579992
Category :
Languages : es
Pages : 184
Get Book Here
Book Description
Una de las nuevas tendencias en la coordinacion de protecciones es la llamada Coordinacion Optima, la cual utiliza metodologias de optimizacion, heuristica o matematica, para realizar ajustes en las protecciones, garantizando la continuidad en el servicio. En la actualidad la metodologia de coordinacion utilizada es el criterio de un experto (o grupo de expertos), que se basa en el conocimiento de la red electrica y el historial de fallas que se han presentado, esta estrategia de ajuste ha producido algunos inconvenientes en las redes, sobre todo cuando se presentan eventos para los cuales no se tienen precedentes, produciendo respuestas incorrectas o excesivas en los sistemas de proteccion. Con base en esto, se presenta una investigacion sobre una metodologia de coordinacion optima de protecciones en Sistemas Electricos de Potencia, basada en Algoritmos Geneticos de tipo Chu-Beasley, que complemente el criterio de un experto."
Author: Oscar Fabián Archila Cruz
Publisher:
ISBN:
Category :
Languages : es
Pages :
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Book Description
El presente trabajo muestra el efecto de realizar la coordinación de protecciones de relés de sobrecorriente direccionales con un modelo detallado de cuatro hilos en una red anillada. La metodología está basada en \cite{urdaneta1} la cual presenta un modelo matemático para la representación del relé, así como el planteamiento del problema de optimización utilizando programación lineal para resolver el problema de coordinación. Este documento parte de este desarrollo. En primera instancia, se plantea la pregunta de ¿cuál es la falla relevante para el problema de coordinación? A partir del anterior interrogatorio se desarrolló el problema de optimización para falla trifásica y diferentes sitios de fallas en la línea para un sistema de 3 barras, 3 líneas de transmisión y 6 relés de sobrecorriente direccionales (RSCD). Seguidamente se evaluó la efectividad de los ajustes para distintos lugares de fallas estableciendo el lugar o lugares en los cuales la función objetivo asociada al problema de optimización fuera la menor. A partir de los resultados obtenidos se estableció los parámetros que definen o alteran la falla relevante en términos del problema de coordinación. En segunda instancia, se resuelve el problema de coordinación, pero en este caso con un modelo detallado de cuatro hilos desbalanceado para falla trifásica y monofásica utilizando OpenDss. A partir de los resultados obtenidos se puede establecer las consecuencias de ubicar el RSCD en las diferentes fases de la línea. Finalmente, se realiza la coordinación para el mismo sistema, pero con variaciones en la impedancia de puesta a tierra, comparando los resultados de los ajustes de los RSCD para los diferentes casos tratados.
Author: Jeroen Frank Warner
Publisher: IWA Publishing
ISBN: 1780401124
Category : Science
Languages : en
Pages : 212
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Book Description
This book examines recent developments in river (flood) management from the viewpoint of Making Space for the River and the resulting challenges for water governance. Different examples from Europe and the United States of America are discussed that aim to ‘green’ rivers, including increasing river discharge for flood management, enhancing natural and landscape values, promoting local or regional economic development, and urban regeneration. Making Space for the River presents not only opportunities and synergies but also risks as it crosses established institutional boundaries and touches on multiple stakeholder interests, which can easily clash. Making Space for the River helps the reader to understand the policy and governance dynamics that lead to these tensions and pays attention to a variety of attempts to organize effective and legitimate governance approaches. The book helps to realize connections between policy domains, problem frames, and goals of different actors at different levels that contribute to decisive and legitimate action. Making Space for the River has an international comparative character that sheds light upon both the country-specific governance dilemmas which relate to specific state traditions and institutional characteristics of national water management, but also uncovers interesting similarities which provide us with building blocks to formulate more generic lessons about the governance of Making Space for the River in different institutional and social contexts. The authors of this book come from a variety of disciplines including public administration, town and country planning, geography and anthropology, and these different disciplines bring multiple ways of knowing and understanding of Making Space for the River programs. The book combines interdisciplinary scientific analyses of Space for the River projects and programs with practical knowing and lessons-drawing. Making Space for the River is written for both practitioners and scholars and students of environmental policy, spatial planning, land use and water management. Editors: Jeroen Warner, Assistant Professor of Disaster Studies, Wageningen University, The Netherlands. Arwin van Buuren, Associate Professor of Public Administration, Erasmus University Rotterdam, The Netherlands. Jurian Edelenbos, Professor of Public Administration, Erasmus University Rotterdam, The Netherlands.
Author: Piet Lens
Publisher: IWA Publishing
ISBN: 1843391007
Category : Science
Languages : en
Pages : 545
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Book Description
Soil and Sediment Remediation discusses in detail a whole set of remediative technologies currently available to minimise their impact. Technologies for the treatment of soils and sediments in-situ (landfarming, bioscreens, bioventing, nutrient injection, phytoremediation) and ex-situ (landfarming, bio-heap treatment, soil suspension reactor) will be discussed. The microbiological, process technological and socio-economical aspects of these technologies will be addressed. Special attention will be given to novel biotechnological processes that utilise sulfur cycle conversions, e.g. sulfur and heavy metal removal from soils. Also the potential of phytoremediation will be highlighted. In addition, treatment schemes for the clean-up of polluted megasites, e.g. harbours and Manufactured Gaswork Plants (MGP), will be elaborated. The aim of Soil and Sediment Remediation is to introduce the reader in: the biogeochemical characteristics of soil and sediments- new techniques to study soil/sediment processes (molecular probes, microelectrodes, NMR) clean up technologies for soils polluted with organic (PAH, NAPL, solvents) or inorganic (heavy metals) pollutants- preventative and remediative strategies and technologies available in environmental engineering novel process applications and bioreactor designs for bioremediation the impact of soil pollution on society and its economic importance.
Author: Barbara Oakley PhD
Publisher: St. Martin's Essentials
ISBN: 1250799384
Category : Education
Languages : en
Pages : 128
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Book Description
A book for learners of all ages containing the best and most updated advice on learning from neuroscience and cognitive psychology. Do you spend too much time learning with disappointing results? Do you find it difficult to remember what you read? Do you put off studying because it’s boring and you’re easily distracted? This book is for you. Dr. Barbara Oakley and Olav Schewe have both struggled in the past with their learning. But they have found techniques to help them master any material. Building on insights from neuroscience and cognitive psychology, they give you a crash course to improve your ability to learn, no matter what the subject is. Through their decades of writing, teaching, and research on learning, the authors have developed deep connections with experts from a vast array of disciplines. And it’s all honed with feedback from thousands of students who have themselves gone through the trenches of learning. Successful learners gradually add tools and techniques to their mental toolbox, and they think critically about their learning to determine when and how to best use their mental tools. That allows these learners to make the best use of their brains, whether those brains seem “naturally” geared toward learning or not. This book will teach you how you can do the same.
Author: Bruce E. Logan
Publisher: John Wiley & Sons
ISBN: 1118230078
Category : Science
Languages : en
Pages : 493
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Book Description
A unique approach to the challenges of complex environmental systems Environmental Transport Processes, Second Edition provides much-needed guidance on mass transfer principles in environmental engineering. It focuses on working with uncontrolled conditions involving biological and physical systems, offering examples from diverse fields, including mass transport, kinetics, wastewater treatment, and unit processes. This new edition is fully revised and updated, incorporating modern approaches and practice problems at the end of chapters, making the Second Edition more concise, accessible, and easy to use. The book discusses the fundamentals of transport processes occurring in natural environments, with special emphasis on working at the biological physical interface. It considers transport and kinetics in terms of systems that involve microorganisms, along with in-depth coverage of particles, size spectra, and calculations for particles that can be considered either spheres or fractals. The book's treatment of particles as fractals is especially unique and the Second Edition includes a new section on exoelectrogenic biofilms. It also addresses dispersion in natural and engineered systems unlike any other book on the subject. Readers will learn to tackle with confidence complex environmental systems and make transport calculations in heterogeneous environments with mixtures of chemicals.
Author: Javier L. Collazo
Publisher:
ISBN:
Category : English language
Languages : es
Pages : 936
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Book Description
Author:
Publisher:
ISBN:
Category : Information storage and retrieval systems
Languages : en
Pages : 6
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Book Description
Author: Karl J. Åström
Publisher:
ISBN: 9780783787824
Category :
Languages : en
Pages : 141
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Book Description
Author: Rob Flickenger
Publisher: "O'Reilly Media, Inc."
ISBN: 9780596005023
Category : Computers
Languages : en
Pages : 190
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Book Description
Building Wireless Community Networks is about getting people online using wireless network technology. The 802.11b standard (also known as WiFi) makes it possible to network towns, schools, neighborhoods, small business, and almost any kind of organization. All that's required is a willingness to cooperate and share resources. The first edition of this book helped thousands of people engage in community networking activities. At the time, it was impossible to predict how quickly and thoroughly WiFi would penetrate the marketplace. Today, with WiFi-enabled computers almost as common as Ethernet, it makes even more sense to take the next step and network your community using nothing but freely available radio spectrum. This book has showed many people how to make their network available, even from the park bench, how to extend high-speed Internet access into the many areas not served by DSL and cable providers, and how to build working communities and a shared though intangible network. All that's required to create an access point for high-speed Internet connection is a gateway or base station. Once that is set up, any computer with a wireless card can log onto the network and share its resources. Rob Flickenger built such a network in northern California, and continues to participate in network-building efforts. His nuts-and-bolts guide covers: Selecting the appropriate equipment Finding antenna sites, and building and installing antennas Protecting your network from inappropriate access New network monitoring tools and techniques (new) Regulations affecting wireless deployment (new) IP network administration, including DNS and IP Tunneling (new) His expertise, as well as his sense of humor and enthusiasm for the topic, makes Building Wireless Community Networks a very useful and readable book for anyone interested in wireless connectivity.
