Download or read book Improving Short Circuit Behaviour of Variable Speed Wind Turbine written by Yadav Neha and published by LAP Lambert Academic Publishing. This book was released on 2014-01 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Generation of electricity using wind power has received considerable attention in recent years & short circuit current contribution of wind turbine has not received much attention so far. wind power plants do not have independent back voltage, they behave as transient sources of fault current during the critical time range.STATCOM improves power quality after the fault. The essential feature of STATCOM is that it has ability to absorb or inject reactive power to the system moreover restoring the stability of the power system having wind farm after occurring severe disturbance such as short circuit fault.
Download or read book Power Electronics for Modern Wind Turbines written by Frede Blaabjerg and published by Morgan & Claypool Publishers. This book was released on 2006-12-01 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind energy is now the world's fastest growing energy source. In the past 10 years, the global wind energy capacity has increased rapidly. The installed global wind power capacity has grown to 47.317 GW from about 3.5 GW in 1994. The global wind power industry installed 7976 MW in 2004, an increase in total installed generating capacity of 20%. The phenomenal growth in the wind energy industry can be attributed to the concerns to the environmental issues, and research and development of innovative cost-reducing technologies. Denmark is a leading producer of wind turbines in the world, with an almost 40% share of the total worldwide production. The wind energy industry is a giant contributor to the Danish economy. In Denmark, the 3117 MW (in 2004) wind power is supplied by approximately 5500 wind turbines. Individuals and cooperatives own around 80% of the capacity. Denmark will increase the percentage of energy produced from wind to 25% by 2008, and aims for a 50% wind share of energy production by 2025. Wind technology has improved significantly over the past two decades, and almost all of the aspects related to the wind energy technology are still under active research and development. However, this monograph will introduce some basics of the electrical and power electronic aspects involved with modern wind generation systems, including modern power electronics and converters, electric generation and conversion systems for both fixed speed and variable speed systems, control techniques for wind turbines, configurations of wind farms, and the issues of integrating wind turbines into power systems. P
Download or read book Wind Energy Generation Modelling and Control written by Olimpo Anaya-Lara and published by John Wiley & Sons. This book was released on 2011-08-24 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: WIND ENERGY GENERATION WIND ENERGY GENERATION MODELLING AND CONTROL With increasing concern over climate change and the security of energy supplies, wind power is emerging as an important source of electrical energy throughout the world. Modern wind turbines use advanced power electronics to provide efficient generator control and to ensure compatible operation with the power system. Wind Energy Generation describes the fundamental principles and modelling of the electrical generator and power electronic systems used in large wind turbines. It also discusses how they interact with the power system and the influence of wind turbines on power system operation and stability. Key features: Includes a comprehensive account of power electronic equipment used in wind turbines and for their grid connection. Describes enabling technologies which facilitate the connection of large-scale onshore and offshore wind farms. Provides detailed modelling and control of wind turbine systems. Shows a number of simulations and case studies which explain the dynamic interaction between wind power and conventional generation.
Download or read book Robust Control for Grid Voltage Stability High Penetration of Renewable Energy written by Jahangir Hossain and published by Springer. This book was released on 2014-07-07 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book makes the area of integration of renewable energy into the existing electricity grid accessible to engineers and researchers. This is a self-contained text which has models of power system devices and control theory necessary to understand and tune controllers in use currently. The new research in renewable energy integration is put into perspective by comparing the change in the system dynamics as compared to the traditional electricity grid. The emergence of the voltage stability problem is motivated by extensive examples. Various methods to mitigate this problem are discussed bringing out their merits clearly. As a solution to the voltage stability problem, the book covers the use of FACTS devices and basic control methods. An important contribution of this book is to introduce advanced control methods for voltage stability. It covers the application of output feedback methods with a special emphasis on how to bound modelling uncertainties and the use of robust control theory to design controllers for practical power systems. Special emphasis is given to designing controllers for FACTS devices to improve low-voltage ride-through capability of induction generators. As generally PV is connected in low voltage distribution area, this book also provides a systematic control design for the PV unit in distribution systems. The theory is amply illustrated with large IEEE Test systems with multiple generators and dynamic load. Controllers are designed using Matlab and tested using full system models in PSSE.
Download or read book Reactive Power Management of Power Networks with Wind Generation written by Hortensia Amaris and published by Springer Science & Business Media. This book was released on 2012-11-28 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the energy sector shifts and changes to focus on renewable technologies, the optimization of wind power becomes a key practical issue. Reactive Power Management of Power Networks with Wind Generation brings into focus the development and application of advanced optimization techniques to the study, characterization, and assessment of voltage stability in power systems. Recent advances on reactive power management are reviewed with particular emphasis on the analysis and control of wind energy conversion systems and FACTS devices. Following an introduction, distinct chapters cover the 5 key areas of FACTS devices, voltage stability, wind generators, reactive power optimization and management. These are supported with applications and example including real-life data from the Spanish Power system. Together with power system engineers, operators and planners will also benefit from this insightful resource. Reactive Power Management of Power Networks with Wind Generation provides a key reference to advanced undergraduate and graduate students in electrical and power engineering.
Download or read book Short circuit Currents in Wind turbine Generator Networks written by Dustin F. Howard and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Protection of both the wind plant and the interconnecting transmission system during short-circuit faults is imperative for maintaining system structural integrity and reliability. The circuit breakers and protective relays used to protect the power system during such events are designed based upon calculations of the current that will flow in the circuit during the fault. Sequence-network models of various power-system components, such as synchronous generators, transformers, transmission lines, etc., are often used to perform these calculations. However, there are no such models widely accepted for certain types of wind-turbine generators used in modern wind plants. The problem with developing sequence-network models of wind plants is that several different wind-turbine generator designs exist; yet, each exhibit very different short-circuit behavior. Therefore, a "one size fits all" approach is not appropriate for modeling wind plants, as has been the case for conventional power plants based on synchronous-generator technology. Further, many of the newer wind-turbine designs contain proprietary controls that affect the short-circuit behavior, and wind-turbine manufacturers are often not willing to disclose these controls. Thus, protection engineers do not have a standard or other well-established model for calculating short-circuit currents in power systems with wind plants. Therefore, the research described in this dissertation involves the development of such models for calculating short-circuit currents from wind-turbine generators. The focus of this dissertation is on the four existing wind-turbine generator designs (identified as Types 1 -- 4). Only AC-transmission-interconnected wind-turbine generators are considered in this dissertation. The primary objective of this research is the development of sequence-network models, which are frequency-domain analysis tools, for each wind-turbine generator design. The time-domain behavior of each wind-turbine generator is thoroughly analyzed through transient simulations, experimental tests on scaled wind-turbine generator test beds, and solutions to the system dynamic equations. These time-domain analyses are used to support the development of the sequence-network models.
Download or read book Stability Control and Reliable Performance of Wind Turbines written by Kenneth Eloghene Okedu and published by BoD – Books on Demand. This book was released on 2018-10-10 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for academics and engineers working in universities, research institutes, and industry sectors wishing to acquire new information and enhance their knowledge of the current trends in wind turbine technology. Readers will gain new ideas and special experience with in-depth information about modeling, stability control, assessment, reliability, and future prospects of wind turbines. This book contains a number of problems and solutions that can be integrated into larger research findings and projects. The book enhances studies concerning the state of the art of wind turbines, modeling and intelligent control of wind turbines, power quality of wind turbines, robust controllers for wind turbines in cold weather, etc. The book also looks at recent developments in wind turbine supporting structures, noise reduction estimation methods, reliability and prospects of wind turbines, etc. As I enjoyed preparing this book, I am sure that it will be valuable for a large sector of readers.
Download or read book Variable Speed Generators written by Ion Boldea and published by CRC Press. This book was released on 2005-11-09 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surveying the technologies used to satisfy the world's demand for open, efficient, and clean electricity, Variable Speed Generators provides an in-depth examination of variable-speed generators for both stand-alone and grid-connected applications. Part of The Electric Generators Handbook, Two-Volume Set, this work offers authoritative, tightly focused treatment of the topologies, steady state and transients modeling, performance, control, design, and testing of stand-alone and grid-connected generators operating at variable speeds. Variable Speed Generators thoroughly covers all types of variable-speed generators currently in progress in distributed generation and renewable energy applications around the world. It delves into the steady state, transients, control, and design of claw-pole rotor synchronous, induction, permanent magnet-assisted synchronous, and switched reluctance starter alternators for hybrid-electric vehicles. It also discusses PM synchronous, transverse-flux PM, and flux-reversal PM generators for low-speed wind and hydro energy conversion as well as linear-motion alternators for residential and spacecraft applications. Numerous design and control examples illustrate the discussion. The promise of renewable, sustainable energy rests on our ability to design innovative power systems that are able to harness energy from a variety of sources. Variable Speed Generators supplies the tools necessary to design, validate, and deploy the right power generation technologies to fulfill tomorrow's complex energy needs.
Download or read book Modeling of Wind Parks for Steady State Short Circuit Studies written by Thomas Kauffmann and published by . This book was released on 2018 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing share of renewable energy resources in electricity generation requires reassessment of protection systems. This is due to the fact that renewables are often electronically coupled to the grid and their behavior under transient conditions is different from the behavior of power plants generating power using classical synchronous generators. The behavior of electronically coupled generators depends on the controllers of their converters, and in principle, their precise simulation under short-circuit conditions is possible using dynamic or transient tools which allow detailed modeling of controllers. However, protection and short-circuit software packages used by practicing engineers depend on steady-state solution engines built in phasor domain. The main objective of this thesis is to develop steady-state phasor models of wind and solar parks that provide their current contribution under steady-state short-circuit conditions. The steady-state models are developed for type-III and type-IV wind turbine generators. Negative sequence control and park controller options are also considered. The Type-IV model can also be used for modeling solar plants since both sources are connected via full converters. The steady-state models are validated using a detailed time-domain model that is developed in EMTP-RV software with the feedback of a leading European manufacturer of wind turbines. The phasor models take into account the behavior of converter conrollers and various control strategies associated with it. For large-scale wind parks connected to high voltage networks, the point of control is located at the point of interconnection of the park. The control strategies act on voltage, reactive power or power factor. In addition to these three control modes, a fault ride through mode is also available to support voltage during fault conditions. A current limiter protects the converters against overcurrent, and operates with P- or Q-priority. This limiter is indispensable but introduces a non-linear behavior. The phasor models take into account the natural negative sequence response of the wind turbine generator with two levels of precision if the controllers are not set to regulate negative sequence : simplified and detailed. Higher precision requires more details about the controller, such as the gains of the inner loop proportional-integral controller.
Download or read book New Solutions for Smart Grids With High Penetration Distributed Energy Resources written by Yang Li and published by Frontiers Media SA. This book was released on 2022-02-17 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wind Energy Handbook written by Tony L. Burton and published by John Wiley & Sons. This book was released on 2021-04-19 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated and authoritative reference to wind energy technology written by leading academic and industry professionals The newly revised Third Edition of the Wind Energy Handbook delivers a fully updated treatment of key developments in wind technology since the publication of the book’s Second Edition in 2011. The criticality of wakes within wind farms is addressed by the addition of an entirely new chapter on wake effects, including ‘engineering’ wake models and wake control. Offshore, attention is focused for the first time on the design of floating support structures, and the new ‘PISA’ method for monopile geotechnical design is introduced. The coverage of blade design has been completely rewritten, with an expanded description of laminate fatigue properties and new sections on manufacturing methods, blade testing, leading-edge erosion and bend-twist coupling. These are complemented by new sections on blade add-ons and noise in the aerodynamics chapters, which now also include a description of the Leishman-Beddoes dynamic stall model and an extended introduction to Computational Fluid Dynamics analysis. The importance of the environmental impact of wind farms both on- and offshore is recognized by expanded coverage, and the requirements of the Grid Codes to ensure wind energy plays its full role in the power system are described. The conceptual design chapter has been extended to include a number of novel concepts, including low induction rotors, multiple rotor structures, superconducting generators and magnetic gearboxes. References and further reading resources are included throughout the book and have been updated to cover the latest literature. As in previous editions, the core subjects constituting the essential background to wind turbine and wind farm design are covered. These include: The nature of the wind resource, including geographical variation, synoptic and diurnal variations, and turbulence characteristics The aerodynamics of horizontal axis wind turbines, including the actuator disc concept, rotor disc theory, the vortex cylinder model of the actuator disc and the Blade-Element/Momentum theory Design loads for horizontal axis wind turbines, including the prescriptions of international standards Alternative machine architectures The design of key components Wind turbine controller design for fixed and variable speed machines The integration of wind farms into the electrical power system Wind farm design, siting constraints, and the assessment of environmental impact Perfect for engineers and scientists learning about wind turbine technology, the Wind Energy Handbook will also earn a place in the libraries of graduate students taking courses on wind turbines and wind energy, as well as industry professionals whose work requires a deep understanding of wind energy technology.
Download or read book Wind Power in Power Systems written by Thomas Ackermann and published by John Wiley & Sons. This book was released on 2005-04-08 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt: As environmental concerns have focussed attention on the generation of electricity from clean and renewable sources, wind energy has become the world’s fastest growing energy source. The authors draw on substantial practical experience to address the technical, economic and safety issues inherent in the exploitation of wind power in a competitive electricity market. Presenting the reader with all the relevant background information key to understanding the integration of wind power into the power systems, this leading edge text: Presents an international perspective on integrating a high penetration of wind power into the power system Offers broad coverage ranging from basic network interconnection issues to industry deregulation and future concepts for wind turbines and power systems Discusses wind turbine technology, industry standards and regulations along with power quality issues Considers future concepts to increase the penetration of wind power in power systems Presents models for simulating wind turbines in power systems Outlines current research activities Essential reading for power engineers, wind turbine designers, wind project development and wind energy consultants dealing with the integration of wind power systems into distribution and transmission networks, this text would also be of interest to network engineers working for power utility companies dealing with interconnection issues and graduate students and researchers in the field of wind power and power systems.
Download or read book Analysis of Short Circuit Current Contribution for Wind Turbine Generators written by Prof. Chintan Mehta and published by . This book was released on 2019-02-24 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: The electrical energy generation is the growth engine of any nation. Till last decade, the electrical power generation was basically produced by thermal energy but due to environmental impacts the focus of electrical energy generation shifts towards renewable energy sources. Out of various renewable sources available for electrical energy generation, the main focus is on wind and solar energy to generate the electrical energy. Penetration of wind energy is increased exponentially, but as compared with conventional energy it is highly intermittent in nature. It is a challenge to synchronize the wind energy in to the conventional power grid. In this thesis, short-circuit current is calculated as per IEC-60909 and it is veried using PSCAD/EMTDC software fora single machine connected to a single load. The standard IEEE 14 Bus system is analyzed using PSCAD/EMTDC. In standard IEEE 14 Bus system, MVA method is used for calculating the short circuit current under 3 phase to ground fault condition and it is veried using PSCAD/EMTDC for all the buses. The single circuit model is introduced to analyze the concept of asymmetrical fault current. The behavior of Synchronous machine, Induction machine and doubly fed induction generator (DFIG) are analyzed under the 3 phase to ground symmetrical fault condition. The short circuit current contribution of DFIG is calculated analytically and the same is validated by PSCAD/EMTDC software under various wind speeds and by considering certain voltage drops of the generator output. The behavior of DFIG and conventional induction generator is analyzed during steady-state and faulty condition under the comparable ratings and parameters. The IEEE 1547 and Indian grid code standard with Low Voltage Ride Through (LVRT) is analyzed or WTGs.
Download or read book Protection Control Systems of Wind Farm Power Plants written by Maty Ghezelayagh and published by Maty Ghezelayagh. This book was released on 2020-03-05 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are a number of books in the market about wind energy, turbine controllers, modelling and different aspects of integration of Wind Farm Power Plants ( WPP) to grids. But none of these books meets the expectations of design and field engineers/technicians to address directly the setting and design philosophy of different Intelligent Electronic Devices (IED) of WPP networks. This book provides practical applications of numerical relays for protection and control of different parts of onshore & offshore WPP network namely wind turbine generator, collector feeder and EHV interconnection transmission line to grid. In addition required changes to existing special protection system (SPS) and run-back scheme by adding a new WPP are discussed. The topology and characteristics of WPP networks are different from convectional one for both onshore and offshore WPP. In addition the fault current contribution from wind farm generators are low (1.1-1.2 pu). These causes significant challenge for setting and design of IEDs of WPP in order to meet the common industry practice requirement with respect to reliability, sensitivity, stability, security and grading coordination. The author believes that this book may be unique with respect to addressing these challenges and provision of the mitigation techniques to rectify the deficiencies of existing industry practice which otherwise have not been discussed for real systems in any other book. The content of this book have been successfully applied in the field for various WPPs projects and consequently can be used as a practical guideline for implementation for future projects. The content of the book covers Principal of Operation of WPP , Modelling of different com ponents of WPP, Short Circuit current and voltage characteristics of different type of wind turbine generators, Setting and Design of Protection systems of WPP Network , Design of Control systems of WPP, Lightening and Overvoltage Protection of WPP and Analysis of Disturbance on the WPP networks
Download or read book Short circuit Modeling of a Wind Power Plant written by E. Muljadi and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wind Farm written by Gastón Orlando Suvire and published by BoD – Books on Demand. This book was released on 2011-06-14 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of wind power generation is being produced with a very high growth rate at world level (around 30%). This growth, together with the foreseeable installation of many wind farms in a near future, forces the utilities to evaluate diverse aspects of the integration of wind power generation in the power systems. This book addresses a wide variety of issues regarding the integration of wind farms in power systems. It contains 10 chapters divided into three parts. The first part outlines aspects related to technical regulations and costs of wind farms. In the second part, the potential estimation and the impact on the environment of wind energy project are presented. Finally, the third part covers issues of the siting assessment of wind farms.
Download or read book Understanding Wind Power Technology written by Alois Schaffarczyk and published by John Wiley & Sons. This book was released on 2014-04-10 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind energy technology has progressed enormously over the last decade. In coming years it will continue to develop in terms of power ratings, performance and installed capacity of large wind turbines worldwide, with exciting developments in offshore installations. Designed to meet the training needs of wind engineers, this introductory text puts wind energy in context, from the natural resource to the assessment of cost effectiveness and bridges the gap between theory and practice. The thorough coverage spans the scientific basics, practical implementations and the modern state of technology used in onshore and offshore wind farms for electricity generation. Key features: provides in-depth treatment of all systems associated with wind energy, including the aerodynamic and structural aspects of blade design, the flow of energy and loads through the wind turbine, the electrical components and power electronics including control systems explains the importance of wind resource assessment techniques, site evaluation and ecology with a focus of project planning and operation describes the integration of wind farms into the electric grid and includes a whole chapter dedicated to offshore wind farms includes questions in each chapter for readers to test their knowledge Written by experts with deep experience in research, teaching and industry, this text conveys the importance of wind energy in the international energy-policy debate, and offers clear insight into the subject for postgraduates and final year undergraduate students studying all aspects of wind engineering. Understanding Wind Power Systems is also an authoritative resource for engineers designing and developing wind energy systems, energy policy makers, environmentalists, and economists in the renewable energy sector.
