Optimal Decentralized Load Frequency Control For Power System
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Optimal Decentralized Load Frequency Control For Power System
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Author : Weijie Shen
language : en
Publisher:
Release Date : 2018
Optimal Decentralized Load Frequency Control For Power System written by Weijie Shen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Load frequency control or LFC is a fundamental mechanism for maintaining the stability of electric power systems. It aims at controlling the power output of generators in response to either changes in frequency (in a single area case) or in response to both changes in frequency and tie-line power interchange (in multi- area cases). Indeed frequency is a ubiquitous signal in power systems and its excursions away from its nominal value are indicative of imbalances between generation and load. Interest in LFC has come back to the fore in view of the challenges raised by increasing levels of penetration of renewable intermittent sources (Wind and solar energy). This situation creates frequent and important mismatches between system generation and system load, and thus create the need for more effective LFC schemes. The current set up is based on estimating a single integral control based power mismatch variable and redistributing a share of the correspondingly needed generation increase or decrease among units according to their power rating [Tan, 2010]. While this has proved to be a robust and algorithmically simple scheme, it is a rather rough approach, as it tends to ignore the particular current state of each generator when provided with a new set point. In order to allow more flexible and less aggressive control to each individual generator, normally only represented as a single aggregate unit, novel decentralized linear quadratic-proportional integral control methods for load frequency control respectively based on so-called mean field team theory (for single and two area systems) and mean field games (for two area systems) are discussed in this thesis. The control problem is formulated as a linear quadratic (LQ) team problem under meanfield sharing (MFS) information structure, i.e., each generator observes its own state (3 state variables) and the mean field, that is in this context the average state of all generators if they are all identical, or the vector of class specific mean states in a non homogeneous multi-class situation. Also, following a team solution scheme developed in [Arabneydi and Mahajan, 2016], a separate mean field control term is a feedback on the vector of mean class specific individual states. The overall result is a decentralized control policy with coordination by the mean field term. The optimal solution is obtained by solving 2 Riccati equations, one for the local generator and another one associated with the mean field (this becomes instead a system of coupled Riccati equations in the subsequent mean field game game solution of the 2 area problem), for the full observation model.
Decentralized Load Frequency Control Of Multi Area Power Systems
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Author : Ross Campbell
language : en
Publisher:
Release Date : 1994
Decentralized Load Frequency Control Of Multi Area Power Systems written by Ross Campbell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Electric controllers categories.
Robust Power System Frequency Control
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Author : Hassan Bevrani
language : en
Publisher: Springer
Release Date : 2014-06-18
Robust Power System Frequency Control written by Hassan Bevrani and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-18 with Technology & Engineering categories.
This updated edition of the industry standard reference on power system frequency control provides practical, systematic and flexible algorithms for regulating load frequency, offering new solutions to the technical challenges introduced by the escalating role of distributed generation and renewable energy sources in smart electric grids. The author emphasizes the physical constraints and practical engineering issues related to frequency in a deregulated environment, while fostering a conceptual understanding of frequency regulation and robust control techniques. The resulting control strategies bridge the gap between advantageous robust controls and traditional power system design, and are supplemented by real-time simulations. The impacts of low inertia and damping effect on system frequency in the presence of increased distributed and renewable penetration are given particular consideration, as the bulk synchronous machines of conventional frequency control are rendered ineffective in emerging grid environments where distributed/variable units with little or no rotating mass become dominant. Frequency stability and control issues relevant to the exciting new field of microgrids are also undertaken in this new edition. As frequency control becomes increasingly significant in the design of ever-more complex power systems, this expert guide ensures engineers are prepared to deploy smart grids with optimal functionality.
Decentralized Load Frequency Control For Interconnected Power Systems With Ac Dc Tie Lines
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Author : S. Ganapathy
language : en
Publisher:
Release Date : 2010
Decentralized Load Frequency Control For Interconnected Power Systems With Ac Dc Tie Lines written by S. Ganapathy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Most of the Load-Frequency Control (LFC) problems in the literature have been treated as single-objective problems till date. This paper emphasizes the need for a multi-objective approach for the load-frequency controller which satisfies two main objectives, namely, minimum Integral Squared Error (ISE) of the system output and maximum closed loop stability of the system. A new Multi-Objective Evolutionary Algorithm (MOEA)-based design of decentralized load-frequency controllers for interconnected power systems with Governor Dead Band (GDB), ac-dc parallel tie lines, and Superconducting Magnetic Energy Storage (SMES) units, is proposed in this paper. AC-DC parallel tie lines provide asynchronous interconnection of neighboring power systems while the SMES units provide bulk energy storage to share the sudden changes in power requirement in the load. Analysis of a two-area interconnected thermal power system reveals that the proposed controller improves the stability and transient response of the system even in the presence of GDB nonlinearity.
Decentralized Frameworks For Future Power Systems
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Author : Mohsen Parsa Moghaddam
language : en
Publisher: Academic Press
Release Date : 2022-05-12
Decentralized Frameworks For Future Power Systems written by Mohsen Parsa Moghaddam and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-05-12 with Technology & Engineering categories.
Decentralized Frameworks for Future Power Systems: Operation, Planning and Control Perspectives is the first book to consider the principles and applications of decentralized decision-making in future power networks. The work opens by defining the emerging power system network as a system-of-systems (SoS), exploring the guiding principles behind optimal solutions for operation and planning problems. Chapters emphasize the role of regulations, prosumption behaviors, and the implementation of transactive energy processes as key components in decentralizing power systems. Contributors explore local markets, distribution system operation and proactive load management. The role of cryptocurrencies in smoothing transactive distributional challenges are presented. Final sections cover energy system planning, particularly in terms of consumer smart meter technologies and distributed optimization methods, including artificial intelligence, meta-heuristic, heuristic, mathematical and hybrid approaches. The work closes by considering decentralization across the cybersecurity, distributed control, market design and power quality optimization vertices. Develops a novel framework for transactive energy management to enhance flexibility in future power systems Explores interactions between multiple entities in local power markets based on a distributed optimization approach Focuses on practical optimization, planning and control of smart grid systems towards decentralized decision-making
Power System Load Frequency Control
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Author : Hassan A. Yousef
language : en
Publisher: CRC Press
Release Date : 2017-03-16
Power System Load Frequency Control written by Hassan A. Yousef and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-16 with Technology & Engineering categories.
This title presents a balanced blend between classical and intelligent load frequency control techniques, which is detrminant for continous supply of power loads. The classical control techniques introduced in this book include PID, pole placement, observer-based state feedback, static and dynamic output feedback controllers while the intelligent control techniques explained here are of adaptive fuzzy control types. This book will analyze and design different decentralized LF controllers in order to maintain the frequency deviations of each power area within the limits and keep the tie-line power flow between different power areas at the scheduled levels.
Decentralized Controller Design For The Dynamic Load Frequency Control Of An Interconnected Power System
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Author : Jagdish Chand
language : en
Publisher:
Release Date : 1980
Decentralized Controller Design For The Dynamic Load Frequency Control Of An Interconnected Power System written by Jagdish Chand and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
Intelligent Automatic Generation Control
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Author : Hassan Bevrani
language : en
Publisher: CRC Press
Release Date : 2017-12-19
Intelligent Automatic Generation Control written by Hassan Bevrani and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-19 with Technology & Engineering categories.
Automatic generation control (AGC) is one of the most important control problems in the design and operation of interconnected power systems. Its significance continues to grow as a result of several factors: the changing structure and increasing size, complexity, and functionality of power systems, the rapid emergence (and uncertainty) of renewable energy sources, developments in power generation/consumption technologies, and environmental constraints. Delving into the fundamentals of power system AGC, Intelligent Automatic Generation Control explores ways to make the infrastructures of tomorrow smarter and more flexible. These frameworks must be able to handle complex multi-objective regulation optimization problems, and they must be highly diversified in terms of policies, control strategies, and wide distribution in demand and supply sources—all via an intelligent scheme. The core of such intelligent systems should be based on efficient, adaptable algorithms, advanced information technology, and fast communication devices to ensure that the AGC systems can maintain generation-load balance following serious disturbances. This book addresses several new schemes using intelligent control techniques for simultaneous minimization of system frequency deviation and tie-line power changes, which is required for successful operation of interconnected power systems. It also concentrates on physical and engineering aspects and examines several developed control strategies using real-time simulations. This reference will prove useful for engineers and operators in power system planning and operation, as well as academic researchers and students in field of electrical engineering.
Renewable Integrated Power System Stability And Control
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Author : Hêmin Golpîra
language : en
Publisher: John Wiley & Sons
Release Date : 2021-03-17
Renewable Integrated Power System Stability And Control written by Hêmin Golpîra and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-03-17 with Technology & Engineering categories.
Discover new challenges and hot topics in the field of penetrated power grids in this brand-new interdisciplinary resource Renewable Integrated Power System Stability and Control delivers a comprehensive exploration of penetrated grid dynamic analysis and new trends in power system modeling and dynamic equivalencing. The book summarizes long-term academic research outcomes and contributions and exploits the authors' extensive practical experiences in power system dynamics and stability to offer readers an insightful analysis of modern power grid infrastructure. In addition to the basic principles of penetrated power system modeling, model reduction, and model derivation, the book discusses inertia challenge requirements and control levels, as well as recent advances in visualization of virtual synchronous generators and their associated effects on system performance. The physical constraints and engineering considerations of advanced control schemes are deliberated at length. Renewable Integrated Power System Stability and Control also considers robust and adaptive control strategies using real-time simulations and experimental studies. Readers will benefit from the inclusion of: A thorough introduction to power systems, including time horizon studies, structure, power generation options, energy storage systems, and microgrids An exploration of renewable integrated power grid modeling, including basic principles, host grid modeling, and grid-connected MG equivalent models A study of virtual inertia, including grid stability enhancement, simulations, and experimental results A discussion of renewable integrated power grid stability and control, including small signal stability assessment and the frequency point of view Perfect for engineers and operators in power grids, as well as academics studying the technology, Renewable Integrated Power System Stability and Control will also earn a place in the libraries of students in Electrical Engineering programs at the undergraduate and postgraduate levels who wish to improve their understanding of power system operation and control.
Power Plants And Power Systems Control 2003
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Author : Kwang Y Lee
language : en
Publisher: Elsevier
Release Date : 2004-04
Power Plants And Power Systems Control 2003 written by Kwang Y Lee and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-04 with Science categories.