Author :
Publisher :
Page : 5 pages
File Size : 25,1 MB
Release : 2007
Category : Distributed generation of electric power
ISBN :
This paper describes reduced-order, simplified wind turbine models for analyzing the stability impact of large arrays of wind turbines with a single point of network interconnection developed under the leadership of the WECC Modeling & Validation Working Group.
Author : Jens Fortmann
Publisher : Springer
Page : 199 pages
File Size : 50,16 MB
Release : 2014-08-22
Category : Technology & Engineering
ISBN : 3658068825
Jens Fortmann describes the deduction of models for the grid integration of variable speed wind turbines and the reactive power control design of wind plants. The modeling part is intended as background to understand the theory, capabilities and limitations of the generic doubly fed generator and full converter wind turbine models described in the IEC 61400-27-1 and as 2nd generation WECC models that are used as standard library models of wind turbines for grid simulation software. Focus of the reactive power control part is a deduction of the origin and theory behind the reactive current requirements during faults found in almost all modern grid codes. Based on this analysis, the design of a reactive power control system for wind turbines and wind plants is deduced that can provide static and dynamic capabilities to ensure a stable voltage and reactive power control for future grids without remaining synchronous generation.
Author : EARNEST, JOSHUA
Publisher : PHI Learning Pvt. Ltd.
Page : 496 pages
File Size : 18,9 MB
Release : 2019-07-01
Category : Technology & Engineering
ISBN : 9388028503
"I encourage all those who will read this book, will promote both directly and indirectly the use and awareness of wind energy as a clean and viable source of electric power." —THOMAS ACKERMAN, Ph.D., Wind Power Author and Founder, Energynautics GmbH, Germany "Those who will read this book, will be well prepared to work in the wind power sector and participate in the important task to develop a renewable energy system which can stop the global climate change." —TORE WIZELIUS, Wind Power Author, Teacher and Wind Project Developer, Sweden "This book provides a valuable technical information on small wind turbines that will allow students to become amateur wind engineers and entrepreneurs in this growing industry." —Urban Green Energy, USA This comprehensive textbook, now in its third edition, incorporates significant improvements based on the readers' suggestions and demands. It provides engineering students with the principles of different types of grid connected renewable energy sources and, in particular, the detailed underpinning knowledge required to understand the different types of grid connected wind turbines. New to the Third Edition • Revised Chapter 1 providing considerable amount of current information and technologies related to various types of renewable energy technologies • One new chapter on 'Electronics in Renewable Energy Systems' (Chapter 15) Designed as a textbook for Renewable Energy courses offered in the most of the Indian universities, the book not only serves for the one-semester stream-specific course on Renewable Energy or Wind Energy for diploma and senior level undergraduate students of electrical, mechanical, electronics and instrumentation engineering, but also for the postgraduate engineering students undertaking energy studies. TARGET AUDIENCE • B.Tech/M.Tech (EEE/ECE/ME) • Diploma (engineering)
Author : S. M. Muyeen
Publisher : BoD – Books on Demand
Page : 216 pages
File Size : 16,70 MB
Release : 2013-03-20
Category : Technology & Engineering
ISBN : 953511042X
This book covers the recent development and progress of the wind energy conversion system. The chapters are contributed by prominent researchers in the field of wind energy and cover grid integration issues, modern control theories applied in wind energy conversion system, and dynamic and transient stability studies. Modeling and control strategies of different variable speed wind generators such as switched reluctance generator, permanent magnet synchronous generator, doubly-fed induction generator, including the suitable power electronic converter topologies for grid integration, are discussed. Real time control study of wind farm using Real Time Digital Simulator (RTDS) is also included in the book, along with Fault ride through, street light application, integrated power flow solutions, direct power control, wireless coded deadbeat power control, and other interesting topics.
Author : Sudipta Chakraborty
Publisher : Springer Science & Business Media
Page : 612 pages
File Size : 37,48 MB
Release : 2013-06-12
Category : Technology & Engineering
ISBN : 1447151046
While most books approach power electronics and renewable energy as two separate subjects, Power Electronics for Renewable and Distributed Energy Systems takes an integrative approach; discussing power electronic converters topologies, controls and integration that are specific to the renewable and distributed energy system applications. An overview of power electronic technologies is followed by the introduction of various renewable and distributed energy resources that includes photovoltaics, wind, small hydroelectric, fuel cells, microturbines and variable speed generation. Energy storage systems such as battery and fast response storage systems are discussed along with application-specific examples. After setting forth the fundamentals, the chapters focus on more complex topics such as modular power electronics, microgrids and smart grids for integrating renewable and distributed energy. Emerging topics such as advanced electric vehicles and distributed control paradigm for power system control are discussed in the last two chapters. With contributions from subject matter experts, the diagrams and detailed examples provided in each chapter make Power Electronics for Renewable and Distributed Energy Systems a sourcebook for electrical engineers and consultants working to deploy various renewable and distributed energy systems and can serve as a comprehensive guide for the upper-level undergraduates and graduate students across the globe.
Author : Eduard Muljadi
Publisher :
Page : 6 pages
File Size : 46,94 MB
Release : 2008
Category : Wind power plants
ISBN :
The use of proprietary models to represent installed wind power plants is incompatible with critical grid planning activities that are conducted by regional reliability organizations as a collaborative effort among many stakeholders. In this context, the use of generic or simplified models is desirable. To address this industry need, the Western Electricity Coordinating Council (WECC) has embarked on the development of generic positive sequence WTG models for large-scale power system transient stability analysis. As an integral part of this WECC activity, the National Renewable Energy Laboratory (NREL) is engaged in a model validation effort. This paper discusses the process of model validation against field measurements.
Author : Qiuwei Wu
Publisher : John Wiley & Sons
Page : 281 pages
File Size : 40,11 MB
Release : 2018-02-05
Category : Science
ISBN : 1119236266
An essential reference to the modeling techniques of wind turbine systems for the application of advanced control methods This book covers the modeling of wind power and application of modern control methods to the wind power control—specifically the models of type 3 and type 4 wind turbines. The modeling aspects will help readers to streamline the wind turbine and wind power plant modeling, and reduce the burden of power system simulations to investigate the impact of wind power on power systems. The use of modern control methods will help technology development, especially from the perspective of manufactures. Chapter coverage includes: status of wind power development, grid code requirements for wind power integration; modeling and control of doubly fed induction generator (DFIG) wind turbine generator (WTG); optimal control strategy for load reduction of full scale converter (FSC) WTG; clustering based WTG model linearization; adaptive control of wind turbines for maximum power point tracking (MPPT); distributed model predictive active power control of wind power plants and energy storage systems; model predictive voltage control of wind power plants; control of wind power plant clusters; and fault ride-through capability enhancement of VSC HVDC connected offshore wind power plants. Modeling and Modern Control of Wind Power also features tables, illustrations, case studies, and an appendix showing a selection of typical test systems and the code of adaptive and distributed model predictive control. Analyzes the developments in control methods for wind turbines (focusing on type 3 and type 4 wind turbines) Provides an overview of the latest changes in grid code requirements for wind power integration Reviews the operation characteristics of the FSC and DFIG WTG Presents production efficiency improvement of WTG under uncertainties and disturbances with adaptive control Deals with model predictive active and reactive power control of wind power plants Describes enhanced control of VSC HVDC connected offshore wind power plants Modeling and Modern Control of Wind Power is ideal for PhD students and researchers studying the field, but is also highly beneficial to engineers and transmission system operators (TSOs), wind turbine manufacturers, and consulting companies.
Author : Djamila Rekioua
Publisher : Springer Nature
Page : 331 pages
File Size : 18,63 MB
Release :
Category :
ISBN : 3031528832
Author : Greg Semrau
Publisher :
Page : 232 pages
File Size : 37,32 MB
Release : 2010
Category : Wind turbines
ISBN :
"With the growing energy demand and need to decrease greenhouse gas emissions there has been a rise in the popularity of renewable energy systems. One of the most popular renewable energy systems over the past decade has been the wind turbine. Technological advances in modeling, prediction, sensing and control combined with the current shift towards decentralized power have prompted development of wind energy systems. Decentralized distribution allows for lower transmission losses because of the closer proximity to the consumer and greater regional control. The wind turbine has positioned itself as the leading energy system to serve as a cornerstone in the development of decentralized energy distribution. This research focuses on the development of a nonlinear dynamic model of a variable speed wind turbine. The modeling effort is followed by model validation against published data. Subsequently, benchmark control problems and existing control strategies are reviewed from literature. Emphasis is placed on variable speed form of operation. Control strategies are studied for two different operating modes of a wind turbine, namely operations below and above the rated-speed. For the former case control design is based on power maximization and for the latter the control design is based on power regulation. For each case, standard control strategies appearing in literature for individual operating regimes are implemented, and thereafter focus is placed on robust performance. Subsequently attempts are made to design new and/or improved strategies. The new control strategies proposed in this research are based on principles from nonlinear control. Furthermore, the research attempts to apply certain relatively new techniques such as extremum-seeking-control to the wind-turbine application. Finally, the research proposes a switching method to combine the control strategies for individual operating regimes."--Abstract.
Author : Sizhen Zhao
Publisher :
Page : 199 pages
File Size : 29,30 MB
Release : 2011
Category : Wind turbines
ISBN :
The development of representative wind turbine models is important to assess realistic impacts of large penetration of wind energy on power systems. During the past decade, several computer models representing different types of wind turbine have become available. One issue is that these models have not been standardised amongst manufacturers. The existing ambiguities in the modelling of wind turbine generators and their effects on simulation results have to be studied in detail. The main goal of this thesis is concerned with the understanding, modelling and grid impacts of large wind farms containing a great number of wind turbines in a power transmission network. In particular, generic models of the doubly-fed induction generator (DFIG) are developed for time-domain simulations and are implemented in the standard power system simulation software DIgSILENT PowerFactory. The results show that the developed models are able to simulate DFIG responses with sufficient accuracy. Response accuracy of the developed models is validated against detailed models and, in some cases, against field measurement data. Different influencing factors of dynamic reactive power compensation are also investigated. It is found that the fault ride-through capability of a wind farm can be generally improved by a mix of static and dynamic reactive compensation systems. A new aggregation approach based on generator speed deviation is also proposed. The results reveal that better performance is achieved by the multi-machine equivalents than the single machine model. The single machine model fails to account for the dynamic response of wind turbines when there is a sudden disconnection of wind generator units during grid disturbances. The proposed technique could have value for representing large wind farms on a consistent basis. The short-circuit models using symmetrical components are developed for DFIG-based wind farms. These models are useful for the system operator to determine whether the wind farm meets the requirements of recently proposed grid codes. The impact of the model-related difference on basic protection requirements of DFIG are further investigated. Finally, an important contribution on model validation using naturally occurring power system disturbances is demonstrated. It is found that the generic models in their present form are capable of capturing the main dynamic responses and control features of the wind generators. It is also observed that the specific control/protection functions of the detailed models require additional verification if these models are to be used for actual wind integration studies.
