Download or read book Power Quality in Microgrids Based on Distributed Generators written by Ambrish Chandra and published by MDPI. This book was released on 2019-12-10 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises ten articles covering different aspects of power quality issues in microgrids and distributed generation (DG) systems, including 1) Detection and estimation of power quality; 2) Modeling; 3) Harmonic control for DG systems and microgrids; 4) Stability improvements for microgrids. Different power quality phenomena and solution were studied in the included papers, such as harmonics, resonance, frequency deviation, voltage sag, and fluctuation. From a network point of view, some papers studied the harmonic and stability issues in standalone microgrids which are more likely to cause power quality problems. Other papers discussed the power quality problems in microgrids which are weakly interconnected with the main distribution grid. In view of the published papers, there is a trend that increasingly advanced modeling, analysis, and control schemes were applied in the studies. Moreover, the latest works focus not only on single-unit problems but also multiple units or network issues. Although some of the hot topics are not included, this book covers multiple aspects of the current power quality research frontier, and represents a particularly useful reference book for frontier researchers in this field.

Download or read book Power Quality in Microgrids Based on Distributed Generators written by Ambrish Chandra and published by . This book was released on 2019 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises ten articles covering different aspects of power quality issues in microgrids and distributed generation (DG) systems, including 1) Detection and estimation of power quality; 2) Modeling; 3) Harmonic control for DG systems and microgrids; 4) Stability improvements for microgrids. Different power quality phenomena and solution were studied in the included papers, such as harmonics, resonance, frequency deviation, voltage sag, and fluctuation. From a network point of view, some papers studied the harmonic and stability issues in standalone microgrids which are more likely to cause power quality problems. Other papers discussed the power quality problems in microgrids which are weakly interconnected with the main distribution grid. In view of the published papers, there is a trend that increasingly advanced modeling, analysis, and control schemes were applied in the studies. Moreover, the latest works focus not only on single-unit problems but also multiple units or network issues. Although some of the hot topics are not included, this book covers multiple aspects of the current power quality research frontier, and represents a particularly useful reference book for frontier researchers in this field.

Download or read book Distributed Energy Resources in Microgrids written by Rajeev Kumar Chauhan and published by Academic Press. This book was released on 2019-08-17 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Distributed Energy Resources in Microgrids: Integration, Challenges and Optimization unifies classically unconnected aspects of microgrids by considering them alongside economic analysis and stability testing. In addition, the book presents well-founded mathematical analyses on how to technically and economically optimize microgrids via distributed energy resource integration. Researchers and engineers in the power and energy sector will find this information useful for combined scientific and economical approaches to microgrid integration. Specific sections cover microgrid performance, including key technical elements, such as control design, stability analysis, power quality, reliability and resiliency in microgrid operation. Addresses the challenges related to the integration of renewable energy resources Includes examples of control algorithms adopted during integration Presents detailed methods of optimization to enhance successful integration

Download or read book Handbook on Microgrids for Power Quality and Connectivity written by Asian Development Bank and published by Asian Development Bank. This book was released on 2020-07-01 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microgrids are poised to play a big role in the electricity ecosystem of the future—with decarbonization, digitalization, decentralization, and non-wires solutions being key attributes. This handbook serves as a guide to evaluate the feasibility of microgrid systems in enhancing power supply quality and connectivity. It includes information about on-grid microgrids for urban and industrial applications, prevailing business models, and emerging trends that could shape the future of this sector.

Download or read book Microgrid Technologies written by C. Sharmeela and published by John Wiley & Sons. This book was released on 2021-04-13 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microgrid technology is an emerging area, and it has numerous advantages over the conventional power grid. A microgrid is defined as Distributed Energy Resources (DER) and interconnected loads with clearly defined electrical boundaries that act as a single controllable entity concerning the grid. Microgrid technology enables the connection and disconnection of the system from the grid. That is, the microgrid can operate both in grid-connected and islanded modes of operation. Microgrid technologies are an important part of the evolving landscape of energy and power systems. Many aspects of microgrids are discussed in this volume, including, in the early chapters of the book, the various types of energy storage systems, power and energy management for microgrids, power electronics interface for AC & DC microgrids, battery management systems for microgrid applications, power system analysis for microgrids, and many others. The middle section of the book presents the power quality problems in microgrid systems and its mitigations, gives an overview of various power quality problems and its solutions, describes the PSO algorithm based UPQC controller for power quality enhancement, describes the power quality enhancement and grid support through a solar energy conversion system, presents the fuzzy logic-based power quality assessments, and covers various power quality indices. The final chapters in the book present the recent advancements in the microgrids, applications of Internet of Things (IoT) for microgrids, the application of artificial intelligent techniques, modeling of green energy smart meter for microgrids, communication networks for microgrids, and other aspects of microgrid technologies. Valuable as a learning tool for beginners in this area as well as a daily reference for engineers and scientists working in the area of microgrids, this is a must-have for any library.

Download or read book Modeling and Control of Power Electronic Converters for Microgrid Applications written by Yang Han and published by Springer Nature. This book was released on 2021-08-27 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the fundamentals of power electronic converter modeling and control, digital simulation, and experimental studies in the area of renewable energy systems and AC/DC microgrid. Recent advanced control methods for voltage source inverters (VSIs) and the hierarchical controlled islanded microgrid are discussed, including the mathematical modeling, controller synthesis, parameter selection and multi-scale stability analysis, and consensus-based control strategies for the microgrid and microgrid clusters. The book will be an invaluable technical reference for practicing engineers and researchers working in the areas of renewable energy, power electronics, energy internet, and smart grid. It can also be utilized as reference book for undergraduate and postgraduate students in electrical engineering.

Download or read book Microgrid Technology and Engineering Application written by Fusheng Li and published by Elsevier. This book was released on 2015-08-27 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the authors’ research and microgrid projects since 2009, and is the most up-to-date resource on the development of microgrid technologies. In addition to basic facility and network design concepts, it covers related subjects including power supply programming and energy optimization, which means it can serve as a single volume reference to the complete microgrid system implementation. Provides a systematic introduction to the basic concepts, key technologies, and practical design methods of microgrids Covers the theoretical design and implementation of microgrid facilities, including practical operational issues, monitoring and control. The balance of theoretical and applied content will be of real value to engineers who are specifying and design systems in regions with limited experience of microgrid systems Includes real-life examples and projects to help implement the content effectively

Download or read book Integration of Distributed Energy Resources in Power Systems written by Toshihisa Funabashi and published by Academic Press. This book was released on 2016-03-23 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integration of Distributed Energy Resources in Power Systems: Implementation, Operation and Control covers the operation of power transmission and distribution systems and their growing difficulty as the share of renewable energy sources in the world’s energy mix grows and the proliferation trend of small scale power generation becomes a reality. The book gives students at the graduate level, as well as researchers and power engineering professionals, an understanding of the key issues necessary for the development of such strategies. It explores the most relevant topics, with a special focus on transmission and distribution areas. Subjects such as voltage control, AC and DC microgrids, and power electronics are explored in detail for all sources, while not neglecting the specific challenges posed by the most used variable renewable energy sources. Presents the most relevant aspects of the integration of distributed energy into power systems, with special focus on the challenges for transmission and distribution Explores the state-of the-art in applications of the most current technology, giving readers a clear roadmap Deals with the technical and economic features of distributed energy resources and discusses their business models

Download or read book Handbook of Distributed Generation written by Ramesh Bansal and published by Springer. This book was released on 2017-03-07 with total page 813 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book features extensive coverage of all Distributed Energy Generation technologies, highlighting the technical, environmental and economic aspects of distributed resource integration, such as line loss reduction, protection, control, storage, power electronics, reliability improvement, and voltage profile optimization. It explains how electric power system planners, developers, operators, designers, regulators and policy makers can derive many benefits with increased penetration of distributed generation units into smart distribution networks. It further demonstrates how to best realize these benefits via skillful integration of distributed energy sources, based upon an understanding of the characteristics of loads and network configuration.

Download or read book DC Distribution Systems and Microgrids written by Tomislav Dragičević and published by Energy Engineering. This book was released on 2018-10 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of recent research activities in the control, protection and architectural design of a number of different types of DC distribution systems and microgrids. Practical requirements and implementation details of several types of DC distribution systems used in real world industrial applications are also given.

Download or read book Integration of Distributed Generation in the Power System written by Math H. J. Bollen and published by John Wiley & Sons. This book was released on 2011-08-04 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: The integration of new sources of energy like wind power, solar-power, small-scale generation, or combined heat and power in the power grid is something that impacts a lot of stakeholders: network companies (both distribution and transmission), the owners and operators of the DG units, other end-users of the power grid (including normal consumers like you and me) and not in the least policy makers and regulators. There is a lot of misunderstanding about the impact of DG on the power grid, with one side (including mainly some but certainly not all, network companies) claiming that the lights will go out soon, whereas the other side (including some DG operators and large parks of the general public) claiming that there is nothing to worry about and that it's all a conspiracy of the large production companies that want to protect their own interests and keep the electricity price high. The authors are of the strong opinion that this is NOT the way one should approach such an important subject as the integration of new, more environmentally friendly, sources of energy in the power grid. With this book the authors aim to bring some clarity to the debate allowing all stakeholders together to move to a solution. This book will introduce systematic and transparent methods for quantifying the impact of DG on the power grid.

Download or read book Distributed Generation written by Tao Lin and published by Nova Science Publishers. This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically discusses (a) Distributed Generation (DG), which operates in a single, stand-alone controllable system mode, and (b) the Microgrid (MG) powered by DG, along with the technical concepts, the impact on power systems, control and optimisation techniques, and their applications. It includes ten chapters that focus on the following five aspects: 1) An overview of distributed generation is introduced in Chapter One, and the technical concept of the microgrid is introduced in Chapter Eight with detail; 2) As the main element of distributed generation (DG), a smart inverter system for the control of active and reactive power in a grid-tied mode, which is treated as an interface between grid and the RES (Renewable Energy System), is studied concretely in Chapter Two; 3) The influence of distributed generation on power systems, including the impact of DG on the planning and operation of power systems, the impact of DG on power quality, and power system protection are concretely described and analysed in Chapters Three, Four and Five, respectively; ) The control and optimisation technologies for DG and MG. These techniques include: the Economic Model Predictive Control (EMPC) strategy for the solution of pricing management in community-based microgrids (MGs), which consider economic benefits as the control and optimisation objects; the distributed control and optimisation techniques for islanded microgrids (MGs) that consider stability as the control and optimisation objects; the intelligent load shedding for stability enhancement in an autonomous microgrid; and the recovery (restoration) control after a contingency situation. These are all investigated in Chapters Six, Seven, Eight and Nine, respectively; 5) The applications of renewable energy technology, such as efficient artisanal light fishing technologies that exploit lake light physics and light-fish interactions, are specifically presented in Chapter Ten.

Download or read book Control of Standalone Microgrid written by Anuradha Tomar and published by Academic Press. This book was released on 2021-07-08 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control of Standalone Microgrid looks at a practical and systematic elaboration of the architecture, design and control of standalone microgrids. It is oriented towards more advanced readers who want to enhance their knowledge in the fields of power engineering, sustainable energy, microgrids and their control. With an enriched collection of topics pertaining to the architecture and control of standalone microgrids, this book presents recent research that will bring advancements in the current power system scenario, discussing operational and technical issues due to high penetration of distributed generation units. Including executable plans for standalone microgrid systems this book enables researchers and energy executives to understand the future of energy delivery systems as well as global case studies and models to apply control techniques for standalone microgrids and protection schemes which provide a deeper level of understanding. Includes significant case studies and global case studies of control techniques and protection schemes Provides a working guideline in the design, analysis and development of Standalone microgrid and its applications Features detailed description of the types and components of standalone microgrids, modeling and simulation and performance analysis

Download or read book Smart Hybrid AC DC Microgrids written by Yunwei Ryan Li and published by John Wiley & Sons. This book was released on 2022-08-17 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: SMART HYBRID AC/DC MICROGRIDS Addresses the technical aspects and implementation challenges of smart hybrid AC/DC microgrids Hybrid AC/DC Microgrids: Power Management, Energy Management, and Power Quality Control provides comprehensive coverage of interconnected smart hybrid microgrids, their different structures, and the technical issues associated with their control and implementation in the next generation of smart grids. This authoritative single-volume resource addresses smart hybrid microgrids power management, energy management, communications, power converter control, power quality, renewable generation integration, energy storage, and more. The book contains both basic and advanced technical information about smart hybrid AC/DC microgrids, featuring a detailed discussion of microgrid structures, communication technologies, and various configurations of interfacing power converters and control strategies. Numerous case studies highlight effective solutions for critical issues in hybrid microgrid operation, control and power quality compensation throughout the text. Topics include control strategies of renewable energy and energy storage interfacing converters in hybrid microgrids, supervisory control strategies of interfacing power converters for microgrid power management and energy microgrid, and smart interfacing power converters for power quality control. This volume: Includes a thorough overview of hybrid AC/DC microgrid concepts, structures, and applications Discusses communication and security enhancement techniques for guarding against cyberattacks Provides detailed controls of smart interfacing power electronics converters from distributed generations and energy storage systems in hybrid AC/DC microgrids Provides details on transient and steady-state power management systems in microgrids Discusses energy management systems, hierarchical control, multi-agent control, and advanced distribution management control of smart microgrids Identifies opportunities to control power quality with smart interfacing power electronic converters Addresses power quality issues in the context of real-world applications in data centers, electric railway systems, and electric vehicle charging stations Smart Hybrid AC/DC Microgrids: Power Management, Energy Management, and Power Quality Control is a valuable source of up-to-date information for senior undergraduate and graduate students as well as academic researchers and industry engineers in the areas of renewable energy, smart grids, microgrids, and power electronics.

Download or read book Distributed Power Resources written by Ruisheng Li and published by Academic Press. This book was released on 2019-06-14 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Distributed Power Resources: Operation and Control of Connecting to the Grid presents research and development, lists relevant technologies, and draws on experience to tackle practical problems in the operation and control of distributed power. Key problems are identified and interrogated, as are requirements and application methods, associated power conversion tactics, operational control protections, and maintenance technologies. The title gives experimental verification of the technologies involved in several demonstration projects, including an active multi-resource distribution grid, and a high-density distributed resources connecting ac/dc hybrid power grid. The book considers the development of distributed photovoltaic power, wind power, and electric vehicle energy storage. It discusses the characteristics of distributed resources and the key requirements and core technologies for plug-and-play applications. Considers the state-of-the-art in distributed power resources and their connection to the grid Leverages practical experience and experimental data to solve problems of operation and control Provides analysis of plug-and-play applications for distributed power supplies Presents relevant technology and practical experience to industry Explores potential new technologies in distributed power resources

Download or read book Smart Microgrids written by Sasi K. Kottayil and published by CRC Press. This book was released on 2020-08-17 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the need to understand the development, use, construction, and operation of smart microgrids (SMG). Covering selected major operations of SMG like dynamic energy management, demand response, and demand dispatch, it describes the design and operational challenges of different microgrids and provides feasible solutions for systems. Smart Micro Grid presents communication technologies and governing standards used in developing communication networks for realizing various smart services and applications in microgrids. An architecture facilitating bidirectional communication for smart distribution/microgrid is brought out covering aspects of its design, development and validation. The book is aimed at graduate, research students and professionals in power, power systems, and power electronics. Features: • Covers a broad overview of the benefits, the design and operation requirements, standards and communication requirements for deploying microgrids in distribution systems. • Explores issues related to planning, expansion, operation, type of microgrids, interaction among microgrid and distribution networks, demand response, and the technical requirements for the communication network. • Discusses current standards and common practices to develop and operate microgrids. • Describes technical issues and requirements for operating microgrids. • Illustrates smart communication architecture and protocols.

Download or read book Modelling Control and Planning of Microgrids for Power Quality Assurance written by Ameen Yazdavar and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis considers power quality improvement for microgrids penetrated with nonlinear loads at two levels: 1) at the device level, which is carried out through the distributed generators' (DGs') controllers on a decentralized basis; and 2) at the system level, in the microgrid planning, taking into account the specific features of microgrids, including the lack of a slack bus, droop-based operation of some DGs, and necessity of voltage support provision. Moreover, given that modelling is an inherent part of power quality studies, the thesis focuses on modelling at two levels: 1) at the device level, in the modelling of nonlinear loads and generators that are commonly used in microgrids; and 2) at the system level, in developing a harmonic power flow algorithm suitable for islanded microgrids to quantify the flow of harmonics as well as voltage distortions. One of the microgrid basic control objectives is to uniformly distribute the loads among different the DGs. For nonlinear loads, their non-fundamental powers should also be evenly shared along with active and reactive powers. The sharing of nonlinear loads among the DGs is always a trade-off between accuracy and voltage quality. The first research point considers a virtual harmonic conductance for each harmonic, as a family of droop characteristics in terms of conductance versus current. Assigning a variable conductance for each harmonic current improves DGs' controllability, thus offering accurate nonlinear load sharing, which is crucial at the near-rated loading, in addition to enhancing the voltage quality. The proposed method also unveils a tuning methodology for the droop characteristics that sets a maximum permissible value for each individual harmonic to comply with international standards. Lastly, a hybrid voltage and current control system is suggested to accurately track the DGs' harmonic conductances designated by the proposed droop characteristics. While the proposed algorithm is capable of accurately distributing common nonlinear loads among DGs, it also enjoys the advantage of supplying local nonlinear loads by their dedicated DGs. As the second research point, the thesis presents a planning platform that simultaneously determines the locations and sizes of DGs and capacitor banks (CBs) for isolated microgrids with a high penetration of nonlinear loads. The proliferation of nonlinear loads along with the capacitors of CBs or DGs' output filters that are distributed throughout microgrids may cause quasi-resonance and severe voltage distortions. Because these issues are affected by the locations and sizes of DGs and CBs, a harmonic analysis should be considered in the planning. For that purpose, a harmonic power flow tool tailored for planning applications is developed that takes into consideration the specific features of isolated microgrids. Given the necessity of supply continuity for isolated microgrids following a contingency, and the fact that frequency and voltage provision cannot be provided by renewable DGs, a reliability constraint has been added to the planning algorithm. This constraint increases the probability of building successful islands, and results in a better distribution of dispatchable DGs throughout microgrids. Developing an effective harmonic power flow tool requires fast and accurate calculations of the harmonics generated by nonlinear elements. As the third research point, the thesis presents a time domain-based method for obtaining all steady-state characteristic and non-characteristic harmonics generated by three-phase diode bridge rectifiers, under unbalanced and distorted supply. The developed model is generic and able to address both continuous- and discontinuous-conduction modes with a single formulation. By introducing a virtual resistance on the rectifier's DC side, the model is extended to accommodate any DC-side filter. Further, a unique analytical Jacobian matrix is developed to guarantee a quadratic convergence for the iterative part of the proposed method. The effectiveness of the proposed method for harmonic analysis is confirmed through a comparative evaluation with time-domain simulations using PSCAD/EMTDC. As the fourth research point, the thesis proposes an accurate harmonic power flow algorithm for islanded microgrids, taking into account their specific features, i.e., the droop-based operation of DGs, lack of a slack bus and the fact that islanded microgrids are based on voltage-controlled DGs. The algorithm is a sequential one that repeats fundamental and harmonic power flow algorithms in sequence until convergence is achieved. The fundamental power flow takes into account the fact that islanded microgrids are formed based on voltage-controlled DGs, as well as the droop-based operation of these DGs. On the other hand, the harmonic power flow is based on Nodal analysis in which the microgrid's nonlinear loads constitute its current source vector and the rest of the elements are modelled within its admittance matrix. The model used for nonlinear loads considers the mutual interactions of different harmonics. The model for voltage-source-converter interfaced DGs is based on a transfer function technique, and allows incorporating different control layers. The effectiveness of the control algorithm has been proven through comparative studies with time domain simulations.