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Author: Luis Gerardo Guerra Sánchez
Publisher:
ISBN:
Category :
Languages : en
Pages : 202
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Book Description
Currently it is widely accepted that the construction of large generation centers is no longer the best option to supply the increment of electric load. High costs related to the construction of new generation centers, state policies aimed at reducing the production of greenhouse gases, and legal issues, such as obtaining environmental permits for the construction of new transmission lines, are some of the main reasons that have driven the growth of small scale generation located close to actual load consumption, also known as Distributed Generation (DG). This doctoral thesis presents a contribution to three main topics related to the analysis of power distribution systems: the generation of system curves (i.e. load and renewable generation curves) to be used in other studies, a procedure for maximum reduction of distribution energy losses by allocating distributed generation, and a procedure for reliability assessment of power distribution systems with distributed generation. The approaches followed in this thesis for implementing the two procedures are based on the Monte Carlo method. The generation of system curves is a key aspect in studies that assume time variation of loads and renewable generation. The main reason behind the implementation of algorithms for obtaining curve shapes of load and generation is to use a self-contained environment that does not rely on external tools (e.g. HOMER). Parallel computing is a natural approach when the objective is to reduce the total execution time of problems with an embarrassingly parallel nature (such as the Monte Carlo method). The use of a multicore environment allows users to distribute task executions among available CPUs, thus reducing total simulation times. Therefore, the procedures for optimum allocation of distributed generation and reliability assessment of power distribution systems have been developed taking advantage of parallel computing; namely, they were conceived as Parallel Monte Carlo methods. The simulation tools used in this work are MATLAB and OpenDSS. OpenDSS is the tool chosen for carrying out the simulations of distribution systems, while MATLAB is used to control the execution of simulations performed by OpenDSS, handle data generated by OpenDSS, and produce graphical outputs. The optimum allocation of distributed generation has been the objective of many studies in recent years; the procedure presented in this Thesis is aimed at minimizing system energy losses for short and long term evaluation periods. A sequential connection of generating units is assumed for long term periods. Although reaching the global optimum using a Monte Carlo approach can be a time consuming task even when a multicore installation is used, the results obtained have proven that the procedure is capable of finding a quasi-optimum solution. Furthermore, two new approaches (i.e. the so-called Refined method and a "Divide and Conque" approach) were presented; their application has permitted an important reduction of simulation times without a significant loss in accuracy. Reliability analysis is a fundamental piece of distribution system planning and design. The developed procedure is mostly aimed at replicating the random nature of system and power component failures; it estimates distribution system reliability indices through consecutive power flow executions of the test system. The obtained results show that the method is able to estimate the probability density function of the different reliability indices with the desired accuracy for systems with and without distributed generation. Additional reliability indices related to distributed generation have been introduced (SAIFIDG and SAIDIDG); these new indices help assessing the impact of system failure on DG. Furthermore, the use of a power flow simulator allows an easy and accurate calculation of the Actual Energy Not Supplied (AENS) and Actual Energy Not Produced (AENP) indices, the latter related to DG.
Author: Luis Gerardo Guerra Sánchez
Publisher:
ISBN:
Category :
Languages : en
Pages : 202
Get Book Here
Book Description
Currently it is widely accepted that the construction of large generation centers is no longer the best option to supply the increment of electric load. High costs related to the construction of new generation centers, state policies aimed at reducing the production of greenhouse gases, and legal issues, such as obtaining environmental permits for the construction of new transmission lines, are some of the main reasons that have driven the growth of small scale generation located close to actual load consumption, also known as Distributed Generation (DG). This doctoral thesis presents a contribution to three main topics related to the analysis of power distribution systems: the generation of system curves (i.e. load and renewable generation curves) to be used in other studies, a procedure for maximum reduction of distribution energy losses by allocating distributed generation, and a procedure for reliability assessment of power distribution systems with distributed generation. The approaches followed in this thesis for implementing the two procedures are based on the Monte Carlo method. The generation of system curves is a key aspect in studies that assume time variation of loads and renewable generation. The main reason behind the implementation of algorithms for obtaining curve shapes of load and generation is to use a self-contained environment that does not rely on external tools (e.g. HOMER). Parallel computing is a natural approach when the objective is to reduce the total execution time of problems with an embarrassingly parallel nature (such as the Monte Carlo method). The use of a multicore environment allows users to distribute task executions among available CPUs, thus reducing total simulation times. Therefore, the procedures for optimum allocation of distributed generation and reliability assessment of power distribution systems have been developed taking advantage of parallel computing; namely, they were conceived as Parallel Monte Carlo methods. The simulation tools used in this work are MATLAB and OpenDSS. OpenDSS is the tool chosen for carrying out the simulations of distribution systems, while MATLAB is used to control the execution of simulations performed by OpenDSS, handle data generated by OpenDSS, and produce graphical outputs. The optimum allocation of distributed generation has been the objective of many studies in recent years; the procedure presented in this Thesis is aimed at minimizing system energy losses for short and long term evaluation periods. A sequential connection of generating units is assumed for long term periods. Although reaching the global optimum using a Monte Carlo approach can be a time consuming task even when a multicore installation is used, the results obtained have proven that the procedure is capable of finding a quasi-optimum solution. Furthermore, two new approaches (i.e. the so-called Refined method and a "Divide and Conque" approach) were presented; their application has permitted an important reduction of simulation times without a significant loss in accuracy. Reliability analysis is a fundamental piece of distribution system planning and design. The developed procedure is mostly aimed at replicating the random nature of system and power component failures; it estimates distribution system reliability indices through consecutive power flow executions of the test system. The obtained results show that the method is able to estimate the probability density function of the different reliability indices with the desired accuracy for systems with and without distributed generation. Additional reliability indices related to distributed generation have been introduced (SAIFIDG and SAIDIDG); these new indices help assessing the impact of system failure on DG. Furthermore, the use of a power flow simulator allows an easy and accurate calculation of the Actual Energy Not Supplied (AENS) and Actual Energy Not Produced (AENP) indices, the latter related to DG.
Author: Abdelhay A. Sallam
Publisher: John Wiley & Sons
ISBN: 1118002210
Category : Technology & Engineering
Languages : en
Pages : 426
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Book Description
This book provides a comprehensive treatment of electric distribution systems. Few books cover specific topics in more depth and there is hardly any book that deals with the key topics of interest to distribution system engineers. The book introduces these topics from two points of view: 1) The practical point of view by providing practical examples and the problems which can be solved. 2) The academic point of view where the analysis and various techniques used for distribution system planning are explained. The most outstanding feature of this book is a combination of practical and academic explanation of its contents. Another outstanding feature is a collection of the traditional and current topics of distribution systems condensed into one book. The reader will gain an understanding of distribution systems from both practical and academic aspects, will be able to outline and design a distribution system for specific loads, cities, zones, etc.. Readers will also be able to recognize the problems which may occur during the operation of distribution systems and be able to propose solutions for these problems.
Author: H. Lee Willis
Publisher: CRC Press
ISBN: 9781420030310
Category : Technology & Engineering
Languages : en
Pages : 1246
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Book Description
Providing more than twice the content of the original edition, this new edition is the premier source on the selection, development, and provision of safe, high-quality, and cost-effective electric utility distribution systems, and it promises vast improvements in system reliability and layout by spanning every aspect of system planning including load forecasting, scheduling, performance, and economics. Responding to the evolving needs of electric utilities, Power Distribution Planning Reference Book presents an abundance of real-world examples, procedural and managerial issues, and engineering and analytical methodologies that are crucial to efficient and enhanced system performance.
Author: Juan Manuel Gers
Publisher: Institution of Engineering and Technology
ISBN: 1785618717
Category : Technology & Engineering
Languages : en
Pages : 441
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Book Description
Distribution systems analysis employs a set of techniques to simulate, analyse, and optimise power distribution systems. Combined with automation, these techniques underpin the concept of the smart grid. In recent years, distribution systems have been facing growing challenges, due to increasing demand as well as the rising shares of distributed and volatile renewable energy sources. For this new edition, the chapters of the first edition have been revised and updated, and the topics of distribution system analysis and distribution automation combined. Coverage includes smart grid, load flow analysis, determination of optimal topology, voltage control and capacitor application, power quality and harmonics in distribution systems, distribution system restoration, numerical relaying and distribution feeder protection, distributed generation and microgrid technology. New material related to renewable energy and microgrids are included, and maturity models and evaluation of smart grid projects are presented, along with material on the transition to the new distribution system technologies.
Author: William H. Kersting
Publisher: CRC Press
ISBN: 1420041738
Category : Technology & Engineering
Languages : en
Pages : 329
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Book Description
For decades, distribution engineers did not have the sophisticated tools developed for analyzing transmission systems-often they had only their instincts. Things have changed, and we now have computer programs that allow engineers to simulate, analyze, and optimize distribution systems. Powerful as these programs are, however, without a real unders
Author: Mariana Resener
Publisher: Springer Nature
ISBN: 3030361152
Category : Business & Economics
Languages : en
Pages : 382
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Book Description
This handbook gathers state-of-the-art research on optimization problems in power distribution systems, covering classical problems as well as the challenges introduced by distributed power generation and smart grid resources. It also presents recent models, solution techniques and computational tools to solve planning problems for power distribution systems and explains how to apply them in distributed and variable energy generation resources. As such, the book therefore is a valuable tool to leverage the expansion and operation planning of electricity distribution networks.
Author: Juan A. Martinez-Velasco
Publisher: John Wiley & Sons
ISBN: 1119480531
Category : Technology & Engineering
Languages : en
Pages : 618
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Book Description
A hands-on introduction to advanced applications of power system transients with practical examples Transient Analysis of Power Systems: A Practical Approach offers an authoritative guide to the traditional capabilities and the new software and hardware approaches that can be used to carry out transient studies and make possible new and more complex research. The book explores a wide range of topics from an introduction to the subject to a review of the many advanced applications, involving the creation of custom-made models and tools and the application of multicore environments for advanced studies. The authors cover the general aspects of the transient analysis such as modelling guidelines, solution techniques and capabilities of a transient tool. The book also explores the usual application of a transient tool including over-voltages, power quality studies and simulation of power electronics devices. In addition, it contains an introduction to the transient analysis using the ATP. All the studies are supported by practical examples and simulation results. This important book: Summarises modelling guidelines and solution techniques used in transient analysis of power systems Provides a collection of practical examples with a detailed introduction and a discussion of results Includes a collection of case studies that illustrate how a simulation tool can be used for building environments that can be applied to both analysis and design of power systems Offers guidelines for building custom-made models and libraries of modules, supported by some practical examples Facilitates application of a transients tool to fields hardly covered with other time-domain simulation tools Includes a companion website with data (input) files of examples presented, case studies and power point presentations used to support cases studies Written for EMTP users, electrical engineers, Transient Analysis of Power Systems is a hands-on and practical guide to advanced applications of power system transients that includes a range of practical examples.
Author: Ramesh Bansal
Publisher: Springer
ISBN: 3319513435
Category : Technology & Engineering
Languages : en
Pages : 813
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Book Description
This book features extensive coverage of all Distributed Energy Generation technologies, highlighting the technical, environmental and economic aspects of distributed resource integration, such as line loss reduction, protection, control, storage, power electronics, reliability improvement, and voltage profile optimization. It explains how electric power system planners, developers, operators, designers, regulators and policy makers can derive many benefits with increased penetration of distributed generation units into smart distribution networks. It further demonstrates how to best realize these benefits via skillful integration of distributed energy sources, based upon an understanding of the characteristics of loads and network configuration.
Author: William H. Kersting
Publisher: CRC Press
ISBN: 1439856222
Category : Technology & Engineering
Languages : en
Pages : 459
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Book Description
Updated to reflect the latest changes and advances in the field, Distribution System Modeling and Analysis, Third Edition again illustrates methods that will ensure the most accurate possible results in computational modeling for electric power distribution systems. With the same simplified approach of previous editions, this book clearly explains the principles and mathematics behind system models, also discussing the "smart grid" concept and its special benefits. However, this volume adds a crucial element not found in previous editions. The first two books developed models for all components but focused less on how to actually implement those models on a computer for planning and for real-time analysis. This book includes numerous models of components and several practical examples, to demonstrate how engineers can apply and customize computer programs to help them plan and operate systems. It also covers approximation methods to help users interpret computer program feedback, so they recognize when a result is not what it should be. Another improvement is the book’s earlier introduction (in chapter 4) of the modified ladder iterative technique. The author explains the need for this method—which is used in most distribution analysis programs—detailing how it is applied and why it is among the most powerful options. Concluding with a detailed summary of presented topics that readers have come to expect, this edition provides useful problems, references, and assignments that help users apply Mathcad® and WIndmil programs to put their new learning into practice. An invaluable tool for engineering students and professionals worldwide, this book explores cutting-edge advances in modeling, simulation, and analysis of distribution systems that can ensure the continued dispersal of safe, reliable energy. Watch William H. Kerstig talk about his book at: http://www.youtube.com/watch?v=qmlDiH1ntuE
Author: Istvan Novak
Publisher: Intl. Engineering Consortiu
ISBN: 9781931695657
Category : Computers
Languages : en
Pages : 578
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Book Description
A series of cogently written articles by 49 industry experts, this collection fills the void on Power Distribution Network (PDN) design procedures, and addresses such related topics as DC–DC converters, selection of bypass capacitors, DDR2 memory systems, powering of FPGAs, and synthesis of impedance profiles. Through these contributions from such leading companies as Sun Microsystems, Sanyo, IBM, Hewlett-Packard, Intel, and Rambus, readers will come to understand why books on power integrity are only now becoming available to the public and can relate these topics to current industry trends.
