Analysis of Sub-synchronous Resonance (SSR) in Doubly-fed Induction Generator (DFIG)-Based Wind Farms
Analysis of Sub-synchronous Resonance (SSR) in Doubly-fed Induction Generator (DFIG)-Based Wind Farms

Author: Hossein Ali Mohammadpour

Publisher: Springer Nature

Published: 2022-05-31

Total Pages: 62

ISBN-13: 3031025016

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Wind power penetration is rapidly increasing in today's energy generation industry. In particular, the doubly-fed induction generator (DFIG) has become a very popular option in wind farms, due to its cost advantage compared with fully rated converter-based systems. Wind farms are frequently located in remote areas, far from the bulk of electric power users, and require long transmission lines to connect to the grid. Series capacitive compensation of DFIG-based wind farm is an economical way to increase the power transfer capability of the transmission line connecting the wind farm to the grid. For example, a study performed by ABB reveals that increasing the power transfer capability of an existing transmission line from 1300 MW to 2000 MW using series compensation is 90% less expensive than building a new transmission line. However, a factor hindering the extensive use of series capacitive compensation is the potential risk of subsynchronous resonance (SSR). The SSR is a condition where the wind farm exchanges energy with the electric network, to which it is connected, at one or more natural frequencies of the electric or mechanical part of the combined system, comprising the wind farm and the network, and the frequency of the exchanged energy is below the fundamental frequency of the system. This oscillatory phenomenon may cause severe damage in the wind farm, if not prevented. Therefore, this book studies the SSR phenomenon in a capacitive series compensated wind farm. A DFIG-based wind farm, which is connected to a series compensated transmission line, is considered as a case study. The book consists of two main parts: Small-signal modeling of DFIG for SSR analysis: This part presents a step-by-step tutorial on modal analysis of a DFIG-based series compensated wind farm using Matlab/Simulink. The model of the system includes wind turbine aerodynamics, a 6th order induction generator, a 2nd order two-mass shaft system, a 4th order series compensated transmission line, a 4th order rotor-side converter (RSC) controller and a 4th order grid-side converter (GSC) controller, and a 1st order DC-link model. The relevant modes are identified using participation factor analysis. Definition of the SSR in DFIG-based wind farms: This part mainly focuses on the identification and definition of the main types of SSR that occur in DFIG wind farms, namely: (1) induction generator effect (SSIGE), (2) torsional interactions (SSTI), and (3) control interactions (SSCI).

Applied Power and Energy Technology II
Applied Power and Energy Technology II

Author: Hong Bo Fan

Publisher: Trans Tech Publications Ltd

Published: 2014-08-13

Total Pages: 1660

ISBN-13: 3038265918

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Collection of selected, peer reviewed papers from the 2014 2nd International Conference on Advances in Energy and Environmental Science (ICAEES 2014), June 21-22, 2014, Guangzhou, China. The 297 papers are grouped as follows: Chapter 1: Development and Utilization of Solar Energy, Chapter 2: Development and Utilization of Biomass Energy, Chapter 3: Development and Utilization of Wind Energy, Chapter 4: Nuclear Energy and Other Energy, Chapter 5: Energy Chemical Engineering and Fuel Cell, Chapter 6: New Energy Vehicles and Electric Vehicles, Chapter 7: Power System, Automation and Control, Chapter 8: High Voltage and Insulation Technology, Chapter 9: Power Electronics, Chapter 10: Smart Grid Technology and Intelligent Technology, Chapter 11: Power Systems Management, Chapter 12: Engineering Thermodynamics and Thermal Engineering, Chapter 13: Power Machinery and Engineering, Chapter 14: HVACR and Heat Pumps, Chapter 15: Equipment Design, Manufacturing and Automation, Chapter 16: Building Materials and Constructions, Green and Energy-Efficient Buildings, Applied Mechanics, Chapter 17: Development and Management of the Energy and Resources Industry, Chapter 18: Computer and Information Technologies Applications, Mathematical Modeling for Industry Development, Chapter 19: Engineering and Engineering Management Education

Advances in Power and Energy Engineering
Advances in Power and Energy Engineering

Author: Yuanzhang Sun

Publisher: CRC Press

Published: 2016-04-05

Total Pages: 724

ISBN-13: 131567680X

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Energy and power are playing pivotal roles in social and economic developments of the modern world. Energy and power engineers and technologists have made our lives much more comfortable and affordable. However, due to the demands of the global population on resources and the environment, innovations of more reliable and sustainable energy res

Modeling and Analysis of Doubly Fed Induction Generator Wind Energy Systems
Modeling and Analysis of Doubly Fed Induction Generator Wind Energy Systems

Author: Lingling Fan

Publisher: Academic Press

Published: 2015-04-16

Total Pages: 154

ISBN-13: 0128029862

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Wind Energy Systems: Modeling, Analysis and Control with DFIG provides key information on machine/converter modelling strategies based on space vectors, complex vector, and further frequency-domain variables. It includes applications that focus on wind energy grid integration, with analysis and control explanations with examples. For those working in the field of wind energy integration examining the potential risk of stability is key, this edition looks at how wind energy is modelled, what kind of control systems are adopted, how it interacts with the grid, as well as suitable study approaches. Not only giving principles behind the dynamics of wind energy grid integration system, but also examining different strategies for analysis, such as frequency-domain-based and state-space-based approaches. Focuses on real and reactive power control Supported by PSCAD and Matlab/Simulink examples Considers the difference in control objectives between ac drive systems and grid integration systems

Impedance-Based Prediction of SSR-Generated Harmonics in Doubly-Fed Induction Generators: Preprint
Impedance-Based Prediction of SSR-Generated Harmonics in Doubly-Fed Induction Generators: Preprint

Author:

Publisher:

Published: 2019

Total Pages: 0

ISBN-13:

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Doubly-fed induction generators (DFIGs) are prone to subsynchronous resonance (SSR) with series-compensated transmission lines and experiencing SSR-generated harmonics of wide-ranging magnitudes. This paper presents a large-signal impedance-based approach for the prediction of the magnitude of SSR-generated harmonics in DFIGs. Note that the large-signal impedance of a network shows the variation in its impedance response with the magnitude of perturbation at its terminals. It is discovered in this paper that the impedance of a series-compensated transmission line starts changing with the magnitude of SSR because of the metal oxide varistor (MOV) based protection of series capacitors in the line. The changing line impedance locks the growth of SSR beyond a certain point, where the DFIG forms a limit cycle mode and emits harmonics at the SSR frequency. The discovered role of the protection of series-capacitors in SSR not only enables the prediction of the SSR-generated harmonics but it can also be used for the timely detection of an SSR event to avoid system disruption and sudden loss of a bulk generation. The large-signal impedance-based prediction of SSR-generated harmonics in DFIG-based wind and hydro generators is demonstrated using numerical simulations of a 2.5-MW, 690-V DFIG supplying to a series-compensated transmission line.

Power Systems Operation with 100% Renewable Energy Sources
Power Systems Operation with 100% Renewable Energy Sources

Author: Sanjeevikumar Padmanaban

Publisher: Elsevier

Published: 2023-11-08

Total Pages: 348

ISBN-13: 0443155798

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Power Systems Operation with 100% Renewable Energy Sources combines fundamental concepts of renewable energy integration into power systems with real-world case studies to bridge the gap between theory and implementation. The book examines the challenges and solutions for renewable energy integration into the transmission and distribution grids, and also provides information on design, analysis and operation. Starting with an introduction to renewable energy sources and bulk power systems, including policies and frameworks for grid upgradation, the book then provides forecasting, modeling and analysis techniques for renewable energy sources. Subsequent chapters discuss grid code requirements and compliance, before presenting a detailed break down of solar and wind integration into power systems. Other topics such as voltage control and optimization, power quality enhancement, and stability control are also considered. Filled with case studies, applications and techniques, Power Systems Operation with 100% Renewable Energy Sources is a valuable read to researchers, students and engineers working towards more sustainable power systems. Explains Volt/Var control and optimization for both transmission grid and distribution Discusses renewable energy integration into the weak grid system, along with its challenges, examples, and case studies Offers simulation examples of renewable energy integration studies that readers will perform using advanced simulation tools Presents recent trends like energy storage systems and demand responses for improving stability and reliability

Analysis of SSR in DFIG-based Wind Farms Connected with Series-compensated Transmission Systems Using Impedance Modeling
Analysis of SSR in DFIG-based Wind Farms Connected with Series-compensated Transmission Systems Using Impedance Modeling

Author: Yiming Zhong

Publisher:

Published: 2017

Total Pages: 62

ISBN-13:

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In the project, an impedance model in the range of sub-synchronous frequency has been built to demonstrate an accurate representation of SSCI. All the conclusions associated with the influence of SSCI through parameter changes have been consistent with the simulation results. The results of the project can have significant effect on mitigation of SSCI DFIG-based wind power systems with series-compensated lines.