Robust Control for Grid Voltage Stability: High Penetration of Renewable Energy - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Robust Control for Grid Voltage Stability: High Penetration of Renewable Energy write by Jahangir Hossain. This book was released on 2014-07-07. Robust Control for Grid Voltage Stability: High Penetration of Renewable Energy available in PDF, EPUB and Kindle. 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.
Advanced Control of Microgrids for Frequency and Voltage Stability
Advanced Control of Microgrids for Frequency and Voltage Stability - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Advanced Control of Microgrids for Frequency and Voltage Stability write by Quang Linh Lam. This book was released on 2018. Advanced Control of Microgrids for Frequency and Voltage Stability available in PDF, EPUB and Kindle. This thesis addresses the frequency and voltage stability issues of stand-alone microgrids with high penetration of renewable energy by making use of energy storage devices, and is divided into two main parts.In the first part, we propose a systematic design of a multi-variable robust control structure for frequency regulation in a diesel-photovoltaic-supercapacitor hybrid power generation system operating in stand-alone mode. The proposed control structure relies on a two-level architecture: classical PI-based current tracking controllers are placed on the low control level and receive references from an H-infinity-control-based upper level. A comprehensive methodology that casts the specific engineering demands of microgrid operation into H-infinity control formalism is detailed. It is also shown how closed-loop dynamic performance requirements must at their turn be taken into account in the initial microgrid setup and sizing, namely in appropriately choosing and rating the energy storage system. Then, a robust performance analysis of the synthesized H-infinity controller in the presence of various load disturbances, photovoltaic output active power variations, and model uncertainties is carried out in order to determine the maximum parameter variation range for which the imposed control performances are respected for the considered operating point. Numerical simulations performed with MATLAB/Simulink show the effectiveness of the proposed frequency robust control strategy on a MVA-rated microgrid. A rapid-prototyping test bench, which is composed of a real supercapacitor-based energy storage system and an emulated diesel-photovoltaic-load grid, is developed in order to experimentally validate this control strategy.The second part of this thesis focuses on computing an H-infinity-based multi-variable voltage controller in order to robustly force the voltage magnitude of the point of common coupling to satisfy dynamic specifications. The same idea of cascaded two-level control structure - where this controller is placed on an upper control level and provides the references to current controllers placed on a lower level - is aslo adopted. Then, the performance and robustness of the proposed H-infinity controller in the presence of various load and photovoltaic reactive power disturbances, as well as model uncertainties, are studied based on MATLAB/Simulink time-domain simulations.
Robust Hierarchical Control of Electrical Power Grids with Renewable Energy Sources
Robust Hierarchical Control of Electrical Power Grids with Renewable Energy Sources - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Robust Hierarchical Control of Electrical Power Grids with Renewable Energy Sources write by Konstantin Schaab. This book was released on 2018-04-10. Robust Hierarchical Control of Electrical Power Grids with Renewable Energy Sources available in PDF, EPUB and Kindle.
Modelling, Control and Stability Analysis of Photovoltaic Systems in Power System Dynamic Studies
Modelling, Control and Stability Analysis of Photovoltaic Systems in Power System Dynamic Studies - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Modelling, Control and Stability Analysis of Photovoltaic Systems in Power System Dynamic Studies write by Gustav Lammert. This book was released on 2019. Modelling, Control and Stability Analysis of Photovoltaic Systems in Power System Dynamic Studies available in PDF, EPUB and Kindle. This thesis investigates the impact of: i) the low voltage ride-through and dynamic voltage support capability; ii) the active current recovery rate; iii) the local voltage control; and iv) the plant-level voltage control of large-scale photovoltaic systems on short-term voltage stability and fault-induced delayed voltage recovery as well as transient and frequency stability. The power system dynamic performance is analysed using state-of-the-art methods, such as phasor mode time-domain simulations and the calculation of the critical clearing time that determines the stability margin. Moreover, the recently developed Kullback-Leibler divergence measure is applied to assess the quality of the voltage recovery. Drawbacks of this metric are outlined and a novel metric, the so-called voltage recovery index, is defined that quantifies the delayed voltage recovery more systematically. The studies are performed with a generic photovoltaic system model and typical model parameters are used that were determined in collaboration with a manufacturer. The stability analysis is performed in DIgSILENT PowerFactory using: i) a one-load infinite-bus system; and ii) an IEEE multi-machine voltage stability test system, namely the Nordic test system. The results show that with the adequate control of photovoltaic systems, power system dynamic performance can be significantly improved.
Reactive Power Control in AC Power Systems
Reactive Power Control in AC Power Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Reactive Power Control in AC Power Systems write by Naser Mahdavi Tabatabaei. This book was released on 2017-04-05. Reactive Power Control in AC Power Systems available in PDF, EPUB and Kindle. This textbook explores reactive power control and voltage stability and explains how they relate to different forms of power generation and transmission. Bringing together international experts in this field, it includes chapters on electric power analysis, design and operational strategies. The book explains fundamental concepts before moving on to report on the latest theoretical findings in reactive power control, including case studies and advice on practical implementation students can use to design their own research projects. Featuring numerous worked-out examples, problems and solutions, as well as over 400 illustrations, Reactive Power Control in AC Power Systems offers an essential textbook for postgraduate students in electrical power engineering. It offers practical advice on implementing the methods discussed in the book using MATLAB and DIgSILENT, and the relevant program files are available at extras.springer.com.
