Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Robust Stability Analysis And Design For Microgrid Systems
Download Robust Stability Analysis And Design For Microgrid Systems full books in PDF, epub, and Kindle. Read online Robust Stability Analysis And Design For Microgrid Systems ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Robust Stability Analysis and Design for Microgrid Systems by : Mariana C. Pulcherio
Download or read book Robust Stability Analysis and Design for Microgrid Systems written by Mariana C. Pulcherio and published by . This book was released on 2018 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aggregation of distributed energy resources (DERs) near the loads to form microgrids was proposed for solving numerous problems faced by the traditional electric power distribution system. To address the growth in microgrid deployment, it is essential to guarantee that these systems are highly robust under all operating conditions, or in other words, they remain stable despite uncertainties. This ability to withstand disturbances and adapt to changing operation scenarios has been identified as a key aspect of the future electric grids. In this dissertation, different scenarios that cause collapse or may lead to instability in a mixed source microgrid are analyzed. Robust control theory is applied to determine the range of stable operation for uncertain parameters. Then, robustness metrics inspired in ecological systems are explored for proposing guidelines to the most robust configurations for a microgrid. Finally, shifting to a non-linear analysis, a controller to aid with coordination of controls is proposed to prevent a cascading collapse when a mixed source microgrid in exposed to a large load change.
Book Synopsis Robust Stability Analysis for Large-scale Power Systems by : Richard Yi Zhang
Download or read book Robust Stability Analysis for Large-scale Power Systems written by Richard Yi Zhang and published by . This book was released on 2017 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovations in electric power systems, such as renewable energy, demand-side participation, and electric vehicles, are all expected to increase variability and uncertainty, making stability verification more challenging. This thesis extends the technique of robust stability analysis to large-scale electric power systems under uncertainty. In the first part of this thesis, we examine the use of the technique to solve real problems faced by grid operators. We present two case studies: small-signal stability for distributed renewables on the IEEE 118-bus test system, and large-signal stability for a microgrid system. In each case study, we show that robust stability analysis can be used to compute stability margins for entire collections of uncertain scenarios. In the second part of this thesis, we develop scalable algorithms to solve robust stability analysis problems on large-scale power systems. We use preconditioned iterative methods to solve the Newton direction computation in the interior-point method, in order to avoid the O(n6) time complexity associated with a dense-matrix approach. The per-iteration costs of the iterative methods are reduced to O(n3) through a hierarchical block-diagonal-plus-low-rank structure in the data matrices. We provide evidence that the methods converge to an [epsilon]-accurate solution in O(1=[square root of ] [epsilon]) iterations, and characterize two broad classes of problems for which the enhanced convergence is guaranteed.
Book Synopsis Modeling, Control, and Stability Analysis of an Islanded Microgrid by : Aboutaleb Haddadi
Download or read book Modeling, Control, and Stability Analysis of an Islanded Microgrid written by Aboutaleb Haddadi and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Economic, technical, and environmental incentives are deriving the energy sector towards a new era of smart distribution networks where coordinated clusters of Distributed Energy Resources (DERs) and local loads form a microgrid, which has a significant potential to serve as the building block of the next generation power distribution networks. This thesis focuses on modeling, control, and stability analysis of a microgrid which consists of multiple electronically interfaced DER units. An important feature of a microgrid is its capability to disconnect from the host power grid and operate in the islanded mode. In the islanded mode of operation, undesirable dynamic interactions could occur between loads and electronically interfaced DER units due to lack of rotational inertia; in the absence of appropriate controls, these dynamic interactions may result in poor transient performance or even instability of an islanded microgrid. To address these challenges, this thesis proposes a control strategy to enhance transient performance and stability of a droop-controlled microgrid and to enable it to ride through transients caused by such system disturbances as load change, DER unit switching, and change of network topology. The dependency of dynamics on the droop gains, steady-state power flow, and network/load is studied in a droop-controlled DER unit. These dependencies result in poor transient performance or even instability of the network in the event of a disturbance in the system. To eliminate these dependencies, a gain-scheduled decoupling control strategy is proposed which alters the dynamic coupling between the DER unit and the rest of microgrid for better stability and transient performance. The impact of the proposed control on the DER and network dynamics is studied by calculating the eigenvalues of a test microgrid assuming the proposed control. The proposed control is shown to stabilize the microgrid for a range of operating condition. Further, this thesis develops a stability analysis method to study dynamic interaction of loads with a DER units and its impact on small-signal stability of an islanded microgrid. The purpose of this study is to design controls that are insensitive to load dynamics. The proposed stability analysis method: i) is a frequency-domain approach which models the source-load dynamic interaction via a closed-loop system of impedances and admittances; ii) provides a less conservative stability condition compared to existing methods, in the sense of having less restriction on the control system; and iii) establishes a robust stability margin in terms of perturbations in load parameters. The proposed method is used to examine small-signal stability of a test islanded microgrid. The findings of the frequency domain analysis are illustrated through time-domain simulations around the operating point on the system under study. Next, based on the proposed stability analysis method, a controller design methodology has been proposed for a DER unit to design a controller which enhances robust stability against load dynamics.Extensive case studies, based on time-domain simulations in the PSCAD/EMTDC software environment, are conducted to evaluate performance of the proposed controllers when the microgrid is subject to various disturbances such as load change, change in network topology, and DER unit outage. Real-time case studies, using OPAL-RT, are also conducted to demonstrate feasibility of hardware implementation and validate controller performance against real-world implementation issues." --
Book Synopsis Advanced Hierarchical Control and Stability Analysis of DC Microgrids by : Andrei-Constantin Braitor
Download or read book Advanced Hierarchical Control and Stability Analysis of DC Microgrids written by Andrei-Constantin Braitor and published by Springer Nature. This book was released on 2022-02-20 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces several novel contributions into the current literature. Firstly, given that microgrid topologies are paramount in theoretical analysis, the author has proposed a rigorous method of computing the network’s admittance matrix and developed to facilitate the stability analysis of DC microgrids supplying nonlinear loads. This unique approach enabled the factorisation of the admittance matrix in a particular way that facilitates a rigorous theoretical analysis for deriving the stability conditions. Secondly, author has proposed a unified control structure at the primary control layer that maintains the widely accepted droop-based approaches and additionally ensures crucial current- and voltage-limiting properties, thus offering an inherent protection to distributed energy resources. He has formalised the control design proofs using Lyapunov methods and nonlinear ultimate boundedness theory, for both parallel and meshed microgrid configurations. Moreover, he has developed a distributed secondary controller using a diffusive coupling communication network, on top of the primary control, to achieve voltage restoration and improve the power sharing. In this way, the author has formulated the complete hierarchical control scheme. In this high-order nonlinear setting, he has analytically proven closed-loop system stability of the overall system, for the first time, using two-time scale approaches and singular perturbation theory, by formulating rigorous theorems that introduce straightforward conditions that guide the system and control design and demonstrate system stability at the desired equilibrium point. In addition, the author has provided a straightforward algorithm for simple testing of system stability and explored from a graphical perspective by giving an interpretation to the effect of the nonlinear load onto the system performance and stability.
Book Synopsis Robust Stability Analysis Methods for Systems with Structured and Parametric Uncertainties by : Charles Thomas Baab
Download or read book Robust Stability Analysis Methods for Systems with Structured and Parametric Uncertainties written by Charles Thomas Baab and published by . This book was released on 2002 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stability Analysis, Flexible Control and Optimal Operation of Microgrid by : Yong Li
Download or read book Stability Analysis, Flexible Control and Optimal Operation of Microgrid written by Yong Li and published by Springer Nature. This book was released on 2023-04-19 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book intends to report the new results of the microgrid in stability analysis, flexible control and optimal operation. The oscillatory stability issue of DC microgrid is explored and further solved. Flexible and stable voltage & frequency control of microgrid is put forward considering the distributed generations or distributed energy storages. The optimal operation of multi-energy is researched in view of economic efficiency and low-carbon development. The results of this book are original from authors who carry out the related research together for a long time, which is a comprehensive summary for authors’ latest research results. The book is likely to be of interest to university researchers, electrical engineers and graduate students in power systems, power electronics, renewable energy and microgrid.
Book Synopsis Robust Stability Analysis of Power Electronic Systems by : Sharmila Sumsurooah
Download or read book Robust Stability Analysis of Power Electronic Systems written by Sharmila Sumsurooah and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transient Characteristics, Modelling and Stability Analysis of Microgrid by : Zhikang Shuai
Download or read book Transient Characteristics, Modelling and Stability Analysis of Microgrid written by Zhikang Shuai and published by Springer. This book was released on 2021-11-02 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on the transient modelling, stability analysis and control of power electronic systems, since these systems face severe safe operation problems the during transient period. It discusses both theoretical analysis and practical applications, highlighting the transient characteristics of converters with different control strategies, and proposes transient modelling and model reduction methods. Furthermore, it classifies the transient stability problems of the system to help the readers gain an understanding of the basic theoretical methods for analysing the power electronic system, at the same time providing sufficient detail to enable engineers to design such systems. Comprehensively describing theoretical analyses, ranging from system modelling and stability analysis to transient control, the book is a valuable resource for researchers, engineers and graduate students in fields of transient modelling, stability analysis and control of power electronic systems.
Book Synopsis Virtual Inertia Synthesis and Control by : Thongchart Kerdphol
Download or read book Virtual Inertia Synthesis and Control written by Thongchart Kerdphol and published by Springer Nature. This book was released on 2020-11-28 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a thorough understanding of the basic principles, synthesis, analysis, and control of virtual inertia systems. It uses the latest technical tools to mitigate power system stability and control problems under the presence of high distributed generators (DGs) and renewable energy sources (RESs) penetration. This book uses a simple virtual inertia control structure based on the frequency response model, complemented with various control methods and algorithms to achieve an adaptive virtual inertia control respect to the frequency stability and control issues. The chapters capture the important aspects in virtual inertia synthesis and control with the objective of solving the stability and control problems regarding the changes of system inertia caused by the integration of DGs/RESs. Different topics on the synthesis and application of virtual inertia are thoroughly covered with the description and analysis of numerous conventional and modern control methods for enhancing the full spectrum of power system stability and control. Filled with illustrative examples, this book gives the necessary fundamentals and insight into practical aspects. This book stimulates further research and offers practical solutions to real-world power system stability and control problems with respect to the system inertia variation triggered by the integration of RESs/DGs. It will be of use to engineers, academic researchers, and university students interested in power systems dynamics, analysis, stability and control.
Book Synopsis Robust Stability and Performance Analysis of Large Scale Power Systems with Parametric Uncertainty by : Rafael B. Castellanos
Download or read book Robust Stability and Performance Analysis of Large Scale Power Systems with Parametric Uncertainty written by Rafael B. Castellanos and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the application of new techniques based on multivariable control theory and optimisation theory to the study of robust stability of highly uncertain models of large interconnected power systems subject to real parameter variations. It focuses on the study of robust stability problems associated with parameter variations representing real physical quantities. The objective is to verify that critical system controllers of complex systems remain stable and achieve desired performance objectives for all predefined power system variations at selected operating conditions along its expected operating trajectory. A second related objective is to determine the stability robustness with respect to changes in power system parameters and the maximum loading condition for which the system will remain stable.
Book Synopsis Robust Stability Analysis for Feedback Interconnections of Unstable Time-varying Systems by : Ulf Jönsson
Download or read book Robust Stability Analysis for Feedback Interconnections of Unstable Time-varying Systems written by Ulf Jönsson and published by . This book was released on 2010 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling and Control Dynamics in Microgrid Systems with Renewable Energy Resources by : Ramesh C. Bansal
Download or read book Modeling and Control Dynamics in Microgrid Systems with Renewable Energy Resources written by Ramesh C. Bansal and published by Academic Press. This book was released on 2023-11-23 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling and Control Dynamics in Microgrid Systems with Renewable Energy Resources looks at complete microgrid systems integrated with renewable energy resources (RERs) such as solar, wind, biomass or fuel cells that facilitate remote applications and allow access to pollution-free energy. Designed and dedicated to providing a complete package on microgrid systems modelling and control dynamics, this book elaborates several aspects of control systems from classical approach to advanced techniques based on artificial intelligence. It captures the typical modes of operation of microgrid systems with distributed energy storage applications like battery, flywheel, electrical vehicles infrastructures that are integrated within microgrids with desired targets. More importantly, the techno-economics of these microgrid systems are well addressed to accelerate the process of achieving the SDG7 i.e., affordable and clean energy for all (E4ALL). This reference presents the latest developments including step by step modelling processes, data security and standards protocol for commissioning of microgrid projects, making this a useful tool for researchers, engineers and industrialists wanting a comprehensive reference on energy systems models. Includes simulations with case studies and real-world applications of energy system models Detailed systematic modeling with mathematical analysis is covered Features possible operating scenarios with solutions to the encountered issues
Book Synopsis Robust Stability and Performance Analysis for Systems with Saturation and Parameter Uncertainty by : Feng Tyan
Download or read book Robust Stability and Performance Analysis for Systems with Saturation and Parameter Uncertainty written by Feng Tyan and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Systematic Control Design and Stability Analysis Approaches for Microgrid Inverters to Enhance Overall Performance and Efficiency by : Nima Amouzegar Ashtiani
Download or read book Systematic Control Design and Stability Analysis Approaches for Microgrid Inverters to Enhance Overall Performance and Efficiency written by Nima Amouzegar Ashtiani and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis addresses a systematic design and implementation of control systems of power converters in microgrids to guarantee system level stability and improve performance and efficiency. Due to the high penetration of power converters in power systems, proper operation of converters in different situations is crucial to maintain the entire system stable. Therefore, depending on the role of the power converter in the system, the control system should be designed properly to address control objectives. With respect to the control objectives and converter configurations, design of the control system faces various challenges. For a single-converter system, uncertainties and practical issues may affect the system performance and its stability. For a multiple-converter system, the interaction among power converters along with its impact on the system stability, and also the overall efficiency optimization introduce other challenges for the control system. In this research, the proposed systematic control system design for a single- and multiple-converter systems are investigated, simulated and experimentally verified as summarized below. First, a robust control system for a single-phase photovoltaic (PV) converter with an LCL-filter under weak grid operation is proposed. The control system guarantees system robustness against weak grid uncertainties such as grid impedance variations and voltage harmonics. Moreover, the controller compensates the system delays. The control system minimizes the bus voltage fluctuations caused by variations of PV system power generation. Furthermore, power decoupling is achieved by the control system without any auxiliary circuit. For converter control systems, a systematic and optimal control design approach is proposed for control structures which involve multiple cascade, or nested, loops. The proposed approach relaxes the limiting condition that the internal loops must be much faster than the external loops. Therefore, faster yet smoother responses can be achieved using the proposed design approach. As an example, the method is also used to systematically design a cascade control system, including voltage and current control loops, for a single-phase standalone inverter. To further investigate the performance of the individual inverters in a microgrid, an approach is proposed for modeling and stability analysis of a single-phase standalone microgrid containing parallel inverters. Using the approach, interactions among parallel inverters and the impact of each parameter variations on the system are studied in detail. Based on this approach, a nonlinear microgrid can be linearized, and the microgrid behaviors can be assessed using several tools available for linear systems. As an example, the model and stability of a single-phase microgrid with two parallel inverters are provided. It is shown that the proposed model predicts the system responses more accurately than the existing modeling approaches, especially, for systems with a small stability margin. Finally, to improve the overall efficiency of the investigated microgrid at light loads, a communicationless modified droop strategy is introduced. The main idea is to revise the power sharing among parallel inverters such that the output power of each inverter is maintained within a proper range with respect to the inverter efficiency curve and the load demand instead of the proportional power sharing, realized through the conventional droop control strategy. Moreover, to evaluate the performance of the proposed method, a system with parallel inverters is simulated and experimentally tested. It is observed that the proposed strategy can improve the overall system efficiency by up to 14% at light loads.
Book Synopsis Microgrids and Methods of Analysis by : Gevork B. Gharehpetian
Download or read book Microgrids and Methods of Analysis written by Gevork B. Gharehpetian and published by Academic Press. This book was released on 2021-07-14 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing penetration of distributed energy resource (DER), distributed generation (DG) and energy storage system (ESS) units in distribution grids leads to the emergence of the concepts of active distribution networks (ADNs), microgrids, and virtual power plants. Nowadays, the use of electronically-coupled distributed energy resources is of great interest that can provide the power of demand side alone or in a small electricity grid. A microgrid is a small-scale power grid in low voltage network that must be able to locally solve energy issues and enhance the flexibility and can operate either in grid-connected or islanded/autonomous mode of operation. To study them, researchers need an appropriate set of methods, software tools, analogous to those exist for large interconnected power systems.The book Microgrids and Methods of Analysis addresses systematic analysis, control/protection systems design, and optimal operation of a distribution system under high penetration of DERs analogous to those that exist for large interconnected power systems. Provides professional guidlines for system planners Explores further research, development, and optimization of existing and new microgrids Addresses analytical methods used for microgrid analysis using advanced research
Book Synopsis Microgrid Cyberphysical Systems by : Bidyadhar Subudhi
Download or read book Microgrid Cyberphysical Systems written by Bidyadhar Subudhi and published by Elsevier. This book was released on 2022-06-03 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microgrid Cyberphysical Systems: Renewable Energy and Plug-in Vehicle Integration outlines the fundamental concepts on microgrid system design and control in a cyberphysical framework, focusing on the integration of renewables and EVs into microgrids. Including operational, control and management perspectives, the volume aims to optimize the reliability and economic performance of microgrids, focusing on power quality, storage and voltage and frequency control. The work encompasses generation, transmission, protection and load management under uncertainty and discusses critical drivers in robustness, uncertainty and sustainability management. Focusing on applied implementations, chapters are supported by detailed methods, heavy figurative explication, and comparative and integrative analysis. Case studies range across chapters. In addition, chapters are supported by representative experimental or test bed validations of proposed algorithms or methods which can be directly applied to reader problems. Provides advanced controller methodologies to efficiently optimize the operation of microgrids with high levels of connected renewable generators and electric vehicles Explores powerful approaches for the prevention of cyberattacks in microgrid systems Addresses design issues for power quality filters suitable for microgrid robustness, uncertainty and sustainability handling Includes field-tested methods, heavy case studies and an implementation focus with supporting experimental or test bed validations of proposed algorithms or methods in MATLAB
Download or read book Microgrids written by Josep M. Guerrero and published by Academic Press. This book was released on 2021-10-21 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microgrids: Modeling, Control, and Applications presents a systematic elaboration of different types of microgrids, with a particular focus on new trends and applications. The book includes sections on AC, DC and hybrid AC/DC microgrids and reflects state-of-the-art developments, covering theory, algorithms, simulations, error and uncertainty analysis, as well as novel applications of new control techniques. Offering a valuable resource for students and researchers working on the integration of renewable energy with existing grid and control of microgrids, this book combines recent advances and ongoing research into a single informative resource. The book highlights recent findings while also analyzing modelling and control, thus making it a solid reference for researchers as well as undergraduate and postgraduate students. Covers different types of microgrids and their architecture and control in a single book Includes original, state-of-the-art research contributions by international experts Features global case studies for better understanding and real-life examples
