Reactive Power Compensation, System and Voltage Stability of an Industrial Network with Short Circuit Limiting Coupler PDF Download
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Author: Victor Shikoana
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Victor Shikoana
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Nasser Tleis
Publisher: Elsevier
ISBN: 008055427X
Category : Technology & Engineering
Languages : en
Pages : 650
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Book Description
This book provides a comprehensive practical treatment of the modelling of electrical power systems, and the theory and practice of fault analysis of power systems covering detailed and advanced theories as well as modern industry practices.The continuity and quality of electricity delivered safely and economically by today’s and future’s electrical power networks are important for both developed and developing economies. The correct modelling of power system equipment and correct fault analysis of electrical networks are pre-requisite to ensuring safety and they play a critical role in the identification of economic network investments. Environmental and economic factors require engineers to maximise the use of existing assets which in turn require accurate modelling and analysis techniques. The technology described in this book will always be required for the safe and economic design and operation of electrical power systems. The book describes relevant advances in industry such as in the areas of international standards developments, emerging new generation technologies such as wind turbine generators, fault current limiters, multi-phase fault analysis, measurement of equipment parameters, probabilistic short-circuit analysis and electrical interference. *A fully up-to-date guide to the analysis and practical troubleshooting of short-circuit faults in electricity utilities and industrial power systems*Covers generators, transformers, substations, overhead power lines and industrial systems with a focus on best-practice techniques, safety issues, power system planning and economics*North American and British / European standards covered
Author: Nasser Tleis
Publisher: Academic Press
ISBN: 0128151188
Category : Science
Languages : en
Pages : 940
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Book Description
Power Systems Modelling and Fault Analysis: Theory and Practice, Second Edition, focuses on the important core areas and technical skills required for practicing electrical power engineers. Providing a comprehensive and practical treatment of the modeling of electrical power systems, the book offers students and professionals the theory and practice of fault analysis of power systems, covering detailed and advanced theories and modern industry practices. The book describes relevant advances in the industry, such as international standards developments and new generation technologies, such as wind turbine generators, fault current limiters, multi-phase fault analysis, the measurement of equipment parameters, probabilistic short-circuit analysis, and more. Includes a fully up-to-date guide to the analysis and practical troubleshooting of short-circuit faults in electricity utilities and industrial power systems Presents sections on generators, transformers, substations, overhead powerlines and industrial systems Covers best-practice techniques, safety issues, power system planning and economics
Author: M A Laughton
Publisher: Elsevier
ISBN: 1483102637
Category : Technology & Engineering
Languages : en
Pages : 993
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Book Description
Electrical Engineer's Reference Book, Fourteenth Edition focuses on electrical engineering. The book first discusses units, mathematics, and physical quantities, including the international unit system, physical properties, and electricity. The text also looks at network and control systems analysis. The book examines materials used in electrical engineering. Topics include conducting materials, superconductors, silicon, insulating materials, electrical steels, and soft irons and relay steels. The text underscores electrical metrology and instrumentation, steam-generating plants, turbines and diesel plants, and nuclear reactor plants. The book also discusses alternative energy sources. Concerns include wind, geothermal, wave, ocean thermal, solar, and tidal energy. The text then looks at alternating-current generators. Stator windings, insulation, output equation, armature reaction, and reactants and time-constraints are described. The book also examines overhead lines, cables, power transformers, switchgears and protection, supply and control of reactive power, and power systems operation and control. The text is a vital source of reference for readers interested in electrical engineering.
Author: Dr. Hidaia Mahmood Alassouli
Publisher: Dr. Hidaia Mahmood Alassouli
ISBN: 3969177790
Category : Technology & Engineering
Languages : en
Pages : 107
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Book Description
Power systems have two components of apparent power: active and reactive power. Both components are necessary for functioning of electrical systems. The active power is the average power absorbed by the resistive load. The reactive power is the measure of energy exchange between the source and reactive power of load. Energy storage devices do not dissipate or supply power, but exchange power with the rest of system. Active power is the one that is converted to other forms of energy in the load yet reactive power is only responsible for magnetizing purposes. Power factor is a ratio depicting how much of the power supplied is real. The reactive current contribute in the value of the overall magnitude of current in transmission lines causing unnecessarily high line currents and low power factor. Since a low power factor means higher amount of apparent power need to be supplied by the utility company, thus the company must also use bigger generators, large transformers and thicker transmission/distribution lines. This requires a higher capital expenditure and operational cost which usually result in the cost being passed to the consumer.In this research, we seek to identify the effects of a low power factor on Swaziland Electricity Companys power supply system and recommend possible solutions to the problem. The results are useful in determining how to optimally deliver power to a load at a power factor that is reasonably close to unity, thus reducing the utilitys operational costs while increasing the quality of the service being supplied.
Author: Dr. Hidaia Mahmoud Alassouli
Publisher: Dr. Hidaia Mahmood Alassouli
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 118
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Book Description
Power systems have two components of apparent power: active and reactive power. Both components are necessary for functioning of electrical systems. The active power is the average power absorbed by the resistive load. The reactive power is the measure of energy exchange between the source and reactive power of load. Energy storage devices do not dissipate or supply power, but exchange power with the rest of system. Active power is the one that is converted to other forms of energy in the load yet reactive power is only responsible for magnetizing purposes. Power factor is a ratio depicting how much of the power supplied is real. The reactive current contribute in the value of the overall magnitude of current in transmission lines causing unnecessarily high line currents and low power factor. Since a low power factor means higher amount of apparent power need to be supplied by the utility company, thus the company must also use bigger generators, large transformers and thicker transmission/distribution lines. This requires a higher capital expenditure and operational cost which usually result in the cost being passed to the consumer. In this research, we seek to identify the effects of a low power factor on Swaziland Electricity Company’s power supply system and recommend possible solutions to the problem. The results are useful in determining how to optimally deliver power to a load at a power factor that is reasonably close to unity, thus reducing the utility’s operational costs while increasing the quality of the service being supplied.
Author: G R Jones
Publisher: Elsevier
ISBN: 1483292037
Category : Technology & Engineering
Languages : en
Pages : 1392
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Book Description
A long established reference book: radical revision for the fifteenth edition includes complete rearrangement to take in chapters on new topics and regroup the subjects covered for easy access to information.The Electrical Engineer's Reference Book, first published in 1945, maintains its original aims: to reflect the state of the art in electrical science and technology and cater for the needs of practising engineers. Most chapters have been revised and many augmented so as to deal properly with both fundamental developments and new technology and applications that have come to the fore since the fourteenth edition was published (1985). Topics covered by new chapters or radically updated sections include: * digital and programmable electronic systems * reliability analysis * EMC * power electronics * fundamental properties of materials * optical fibres * maintenance in power systems * electroheat and welding * agriculture and horticulture * aeronautic transportation * health and safety * procurement and purchasing * engineering economics
Author:
Publisher:
ISBN:
Category :
Languages : pt-BR
Pages :
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Na medida em que as redes de transmissão de energia elétrica ficaram mais malhadas, os limites térmicos de linhas e transformadores passaram a restringir menos a transmissão de potência. Similarmente, o uso de sistemas estáticos de compensação de potência reativa eestabilizadores na excitação dos geradores aumentou a capacidade de transmissão de potência nos sistemas antes limitados por problemas de estabilidade angular. Hoje as linhas de transmissão estão mais carregadas e isto deu origem ao problema da instabilidade de tensão. Neste trabalho, as condições de estabilidade de tensão são avaliadas por condições nodais associadas ao máximo fluxo de potência ativa e reativa que pode ser transmitida dos geradores para as cargas. Estas condições nodais são avaliadas por uma ferramenta analítica com base emmodelo matemático, simples mas poderoso, de uma direta interpretação física do fenômeno. Índices abrangentes e significativos são obtidos a partir da matriz Jacobiano do sistema. Eles indicam a região de operação na curva V x P, Q, a margem em MVA para o máximo carregamento, a importância relativa entre as barras, uma medida de dificuldade de transmissão, e o índice de influência que relaciona as margens de potência entre dois pontos deoperação, o que caracteriza a eficácia ou não, por exemplo, de uma ação de controle. O método proposto nesta tese para reforçar as condições de estabilidade de tensão consiste detrês etapas seqüenciais. Primeiramente, avalia-se as condições de estabilidade de tensão determinando-se a barra crítica da rede através do cálculo da margem de potência. Determinase o caminho de transmissão crítico, conceito novo usado neste trabalho, entre os vários existentes para transportar potência de geradores para aquela barra crítica. Determina-se então o ramo crítico deste caminho, conceito introduzido neste trabalho. Um programa de fluxo depotência ótimo é usado para aliviar o carregamento desse ramo crítico. A seqüência começa novamente com a avaliação das condições no novo ponto de operação. Todas as etapas sãorepetidas até que as margens resultantes sejam julgadas adequadas. Barras de carga, de geração e de tensão controlada por compensadores de potência reativa emparalelo com a rede podem ser eleitas como a barra crítica. Somente o método de avaliação nodal usado é capaz de lidar com qualquer tipo de barra. Da mesma forma, o procedimentoproposto para reforçar as condições de estabilidade de tensão é adequado para qualquer tipo de barra. São mostrados inúmeros testes, tanto ilustrativos como com sistemas reais, em pontos de operação também reais, inclusive na situação de iminente colapso de tensão. Verifica-se que ométodo proposto realmente produz os resultados desejados.
Author: Hartmut Kiank
Publisher: John Wiley & Sons
ISBN: 3895786659
Category : Technology & Engineering
Languages : en
Pages : 427
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Book Description
When planning an industrial power supply plant, the specific requirements of the individual production process are decisive for the design and mode of operation of the network and for the selection and design and ratings of the operational equipment. Since the actual technical risks are often hidden in the profound and complex planning task, planning decisions should be taken after responsible and careful consideration because of their deep effects on supply quality and energy efficiency. This book is intended for engineers and technicians of the energy industry, industrial companies and planning departments. It provides basic technical network and plant knowledge on planning, installation and operation of reliable and economic industrial networks. In addition, it facilitates training for students and graduates in this field. In an easy and comprehensible way, this book informs about solution competency gained in many years of experience. Moreover, it also offers planning recommendations and knowledge on standards and specifications, the use of which ensures that technical risks are avoided and that production and industrial processes can be carried out efficiently, reliably and with the highest quality.
Author: Carson W. Taylor
Publisher:
ISBN:
Category : Electric power system stability
Languages : en
Pages :
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