Download or read book Impact of Shunt flexible AC Transmission System FACTS on Distance Based Transmission Line Protection written by Fadhel Abbas Albasri and published by . This book was released on 2007 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Investigation of the Impact of Distributed Flexible AC Transmission System D Facts Devices on Transmission Line Protection written by Hussain Beleed and published by . This book was released on 2020 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores the effects of inductive Distributed Flexible AC Transmission System (D-FACTS) device implementations on the performance of different transmission line protection schemes. The reliability and sensitivity of the trip decision of the protection elements is crucial for delivering safe and reliable power to customers. Furthermore, accurate fault location information can help significantly reduce outage duration, operating costs, and the number of consumer complaints. Inductive D-FACTS devices offer a distributed solution for managing and relieving the congestion in transmission lines. However, their interaction with protection and fault location elements may potentially cause unnecessary tripping, relay mis-operation, or misleading fault location information. The operation of these devices may also lead to unpredictable changes in transmission line impedance and fault current limitation due to their dynamic behavior before and during the disturbances. This work studies these negative aspects of D-FACTS devices and proposes solutions and alternatives to mitigate their impact.An inductive D-FACTS model was developed in the ATP version of the Electromagnetic Transients Program (EMTP) and then the steady-state performance of these devices was validated against the existing D-FACTS model in PowerWorld using the IEEE 12 bus test system. Once the model was validated, a more practical system with D-FACTS implementation is simulated using ATP. Lastly, the generated fault event files are played back into commercial relays and a protective relay software model for evaluation.This work examines the influence of two different implementations of inductive D-FACTS on the most common protection elements and schemes under different fault scenarios. The types of D-FACTS devices implementations studied were: dispersed (distributing the D-FACTS along the length of the line) and compressed (distributing them at specific distances on the line). Additionally, the impact of placing D-FACTS devices on adjacent lines was studied. Protection schemes studied in this thesis include distance elements (mho or quadrilateral elements), communication aided distance schemes (permissive overreaching transfer trip [POTT]), and fault location schemes. Furthermore, the influence of fault resistance and mutual coupling between parallel lines on relay response is studied in the presence of D-FACTS devices.Dispersed or compressed D-FACTS implementation can cause underreaching of distance elements. This may lead to a delay in the tripping time or in fact, a failure to trip in a POTT scheme. The simulation results show that using dispersed D-FACTS implementation can reduce the error compared to the compressed implementation, and increase the ability of performing correction for these devices under some operating conditions. This work also examined the effect of D-FACTS devices on distance elements' performance in presence of a fault resistance and mutual coupling between the parallel lines. The results illustrated how the direction of the power flow influences the fault resistance coverage of distance elements in the presence of D-FACTS devices. The D-FACTS may help to reduce the distance elements' underreach for forward faults and increase the underreach behavior for the reverse fault. The results show that mutual coupling influence on distance elements would be not impacted by addition of the D-FACTS devices.Lastly, we investigated how implementing inductive D-FACTS devices on the adjacent line affects the dynamic behavior of mho distance elements and the calculated effective impedance tilt of quadrilateral distance elements' response. Inserting the D-FACTS behind the relay can help expand the mho circles for forward faults and contract them for reverse faults. As a result, fault resistance coverage can be improved. On the other hand, this may cause underreaching or overreaching of the quadrilateral distance elements' response when a fault resistance is present in a ground fault.To deal with the challenges in the implementation of D-FACTS devices and minimize their influence on transmission line protection system performance, this thesis proposes mitigation for creating reliable protection and fault location schemes. The work concludes by offering recommendations for D-FACTS device implementation and protective relays' settings.

Download or read book Flexible Ac Transmission Systems FACTS written by Yong-Hua Song and published by IET. This book was released on 1999 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive guide to FACTS, covering all the major aspects in research and development of FACTS technology.

Download or read book Flexible AC Transmission Systems FACTS written by Suman Bhowmick and published by CRC Press. This book was released on 2018-09-03 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flexible AC Transmission Systems (FACTS): Newton Power-Flow Modeling of Voltage-Sourced Converter-Based Controllers introduces different voltage-sourced converter (VSC)-based FACTS controllers and VSC-based high-voltage direct current (VSC-HVDC) systems and their working principles, explaining how FACTS controllers exchange real and reactive power with systems. Subsequently, the book: Describes the Newton–Raphson method and its application for solving the power-flow problem Presents the Newton power-flow modeling of the static synchronous series compensator (SSSC), unified power-flow controller (UPFC), interline power-flow controller (IPFC), generalized unified power-flow controller (GUPFC), and static synchronous compensator (STATCOM), accommodating the practical device constraint limits (because of the unique modeling strategy, the existing Newton power-flow codes can be reused) Develops a unified Newton power-flow model of AC systems incorporating multiterminal VSC-HVDC systems with pulse-width modulation (PWM) control schemes, directly yielding the VSC modulation indices from the power-flow solution Provides numerous case studies for validation of Newton power-flow models, elaborating on the occurrences and checking of unrealistic power-flow solutions in isolated cases Includes detailed derivations of all the difficult formulae as well as solved problems on typical VSC-based FACTS controllers Flexible AC Transmission Systems (FACTS): Newton Power-Flow Modeling of Voltage-Sourced Converter-Based Controllers assumes at least an undergraduate-level understanding of engineering mathematics, network analysis, electrical machines, electrical power systems, and power electronics. Thus, the book provides a valuable reference for practitioners as well as senior-undergraduate and graduate students in electrical engineering and electrical power systems.

Download or read book Protection Technologies of Ultra High Voltage AC Transmission Systems written by Bin Li and published by Academic Press. This book was released on 2020-02-03 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protection Technologies of Ultra-High-Voltage AC Transmission Systems considers the latest research on UHV, UHV transmission line electromagnetic field, transmission line parameters, and tower structures, with a focus on protective relaying of UHV transmission systems. This book gives insights into protective relaying of UHV AC transmission systems and sheds light on the conundrum of protective relaying for the EHV systems. In addition, it elaborates on both traditional relaying and the application of new type current differential protection, distance protection and automatic reclosing, as well as protective schemes for transformers and reactors in UHV transmission systems. This resource will serve as an important reference for technical personnel in network design and operation, as well as students and engineers in related engineering areas. Compares new advances and trends in Ultra-High-Voltage (UHV) transmission system from a global aspect Describes UHV protection technologies Evaluates conventional protection and novel protection principles in applied and verified global systems

Download or read book Understanding FACTS written by Narain G. Hingorani and published by Wiley-IEEE Press. This book was released on 2000 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Flexible AC Transmission System (FACTS)--a new technology based on power electronics--offers an opportunity to enhance controllability, stability, and power transfer capability of ac transmission systems. Two pioneers in the field provide in-depth discussions on power semiconductor devices, voltage-sourced and current-sourced converters, specific FACTS controllers, and major FACTS applications in the U.S.

Download or read book Thyristor Based FACTS Controllers for Electrical Transmission Systems written by R. Mohan Mathur and published by John Wiley & Sons. This book was released on 2002-02-27 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretische Grundlagen und praktische Details werden in diesem Band gleichermaßen tiefgründig abgehandelt. Beispiele und Fallstudien zum Entwurf von Steuerungen und zur Messung der Leistungsfähigkeit runden den Text ab.

Download or read book Artificial Intelligence Applications in Electrical Transmission and Distribution Systems Protection written by Almoataz Y. Abdelaziz and published by CRC Press. This book was released on 2021-10-21 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Artificial intelligence (AI) can successfully help in solving real-world problems in power transmission and distribution systems because AI-based schemes are fast, adaptive, and robust and are applicable without any knowledge of the system parameters. This book considers the application of AI methods for the protection of different types and topologies of transmission and distribution lines. It explains the latest pattern-recognition-based methods as applicable to detection, classification, and location of a fault in the transmission and distribution lines, and to manage smart power systems including all the pertinent aspects. FEATURES Provides essential insight on uses of different AI techniques for pattern recognition, classification, prediction, and estimation, exclusive to power system protection issues Presents an introduction to enhanced electricity system analysis using decision-making tools Covers AI applications in different protective relaying functions Discusses issues and challenges in the protection of transmission and distribution systems Includes a dedicated chapter on case studies and applications This book is aimed at graduate students, researchers, and professionals in electrical power system protection, stability, and smart grids.

Download or read book Protection Challenges in Meeting Increasing Electric Power Demand written by Om Hari Gupta and published by Springer Nature. This book was released on 2021-01-11 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference book provides a detailed discussion on the protection challenges that arise due to technological improvements in transmission and distribution systems to supply increasing power demand. The primary focus of this book is transmission line protection with FACTS devices connected to the line and islanding detection in an active distribution system i.e., microgrids. First, a literature review on the protection of transmission lines in the presence of switching devices is presented. The following chapters then present commonly proposed modifications required in the power system to meet increasing power demands, commonly used existing protection schemes and their limitations in the presence of switching devices, and solutions to these limitations in protection schemes. Results from fault simulations using PSCAD/EMTDC and MATLAB are also included. This book will be valuable to graduate students and practicing engineers alike for dealing with protection issues in transmission and distribution systems incorporating FACTS devices. Provides thorough knowledge of trends in transmission networks for the enhancement of power flow, control and protection Presents an analysis of requirements of microgrids in the future Highlights challenges in the protection of active distribution systems or microgrids against islanding in the presence of distributed generation

Download or read book Modelling Flexible AC Transmission Systems FACTS Devices on Weak Transmission Lines in the Nigerian Power Network written by Olalekan Olagunju and published by GRIN Verlag. This book was released on 2020-02-26 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research Paper (postgraduate) from the year 2019 in the subject Electrotechnology, , language: English, abstract: The aim of the study is to model FACTS devices on weak transmission line in the Nigeria power network and consider their effect on the bus voltages, reactive and active power using genetic algorithm(GA) approach for loss minimization. The Nigeria 330KV existing network to be considered consist of nine (9) generating stations, thirty(30)Buses and forty one (41) transmission lines which will be modelled and simulated using Matlab Version 7.10. The study is limited to Nigeria 330kV existing power network with the focus on the comparison of the Bus voltages and power flow on the transmission lines when FACTS devices are incorporated and when the FACTS devices are not incorporated. Research Questions: For the realization of the objectives mentioned above and the aim, the following research questions were set as a guide: 1. What is the significant effect of FACTS devices on weak transmission lines? 2. Can FACTS device be used with genetic algorithm for optimization of power loss and improvement of the bus voltages? 3. What is the limitation of using just genetic algorithm without FACTS device for the optimization of power loss and the improvement of the bus voltages? This research work is divided into five chapters with each chapter buttressing more on minimization of power loss. The scope of the work , the objective and aim of the research work to be achieved is addressed in chapter one (1). Chapter two(2) focus on the literature review of other researchers on FACTS device in the improvement of the power network, the concept of FACTS device and the choice of FACTS device to be used was also addressed in chapter two (2) of this research work. Chapter three focus on the methodology used for this study. The simulation of the 330kV Nigeria power network was done on MATLAB /SIMULINK 7.5. Also the chapter three focused on the use of power flow analysis toolbox which is a collection of a written codes of m files that has a compatible interface with MATLAB to generate the load flow of the power network instead of using ETAP. The genetic algorithm was also discussed as an optimization tool deployed to optimize the losses on the transmission line. Chapter four focus on the research findings with possible explanation as to some of the result obtained. Finally chapter five talks about the conclusion of this research work and highlight some areas to explore in the future.

Download or read book Static Compensators STATCOMs in Power Systems written by Farhad Shahnia and published by Springer. This book was released on 2014-12-01 with total page 741 pages. Available in PDF, EPUB and Kindle. Book excerpt: A static compensator (STATCOM), also known as static synchronous compensator, is a member of the flexible alternating current transmission system (FACTS) devices. It is a power-electronics based regulating device which is composed of a voltage source converter (VSC) and is shunt-connected to alternating current electricity transmission and distribution networks. The voltage source is created from a DC capacitor and the STATCOM can exchange reactive power with the network. It can also supply some active power to the network, if a DC source of power is connected across the capacitor. A STATCOM is usually installed in the electric networks with poor power factor or poor voltage regulation to improve these problems. In addition, it is used to improve the voltage stability of a network. This book covers STATCOMs from different aspects. Different converter topologies, output filters and modulation techniques utilized within STATCOMs are reviewed. Mathematical modeling of STATCOM is presented in detail and different STATCOM control strategies and algorithms are discussed. Modified load flow calculations for a power system in the presence of STATCOMs are presented. Several applications of STATCOMs in transmission and distribution networks are discussed in different examples and optimization techniques for defining the optimal location and ratings of the STATCOMs in power systems are reviewed. Finally, the performance of the network protection scheme in the presence of STATCOMs is described. This book will be an excellent resource for postgraduate students and researchers interested in grasping the knowledge on STATCOMs.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Analysis of Distance Relay on Shunt series Facts compensated Transmission Line written by Ahmed Kareen Lafta Al-Behadili and published by . This book was released on 2015 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flexible Alternating Current Transmission Systems (FACTS) are increasingly being used to enhance the efficiency and reliability of power system networks. FACTS devices can influence the performance of existing protective system components, specifically distance relays, due to the fact that FACTS change power system quantities such as line impedances, voltages, and currents. Distance relay may mal-operate when FACTS devices are connected since they cause some of the tripping characteristics to change. This thesis investigates the impact on distance relay performance due to compensations using two types of FACTS controllers: Static Synchronous Compensator (STATCOM) and Static Synchronous Series Compensator (SSSC). Analytical study on the effects of STATCOM and SSSC on distance relay performance is conducted. A detailed modeling and simulation of digital distance relay with three zones mho characteristics are also presented along with a verification of the proposed models under a variety of fault types and fault locations. Results from the analytical comparative study are confirmed by the simulation results and both corroborate the fact that we need to address distance relay performance under the different modes of operation of STATCOM and SSSC and that a redesign is essential to better face problems such as in over or under reaching.

Download or read book Renewable Resources and Energy Management written by Satyajit Chakrabarti and published by CRC Press. This book was released on 2023-05-25 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Conference on Energy Management & Renewable Resources has been a premium forum for presenting recent advances in renewable based energy systems, smart applications of power electronic devices in modern grid systems and AI based control over energy management areas. IEMRE2022 has been an excellent platform to collaborate and showcase high-end research giving exposure to interact with the eminent Professors, Technocrats, Scientists, Administrators and Students throughout the world by the latest innovations in the field of Renewable Energy and Energy Management with their applications in worldwide energy sectors. IEMRE 2022 was organized by Department of EEE & EE of Institute of Engineering & Management, Kolkata, India for three days in online mode with invited lectures by outstanding speakers from all over the world on emerging areas in the field of renewable energy. This book is a collection of select papers from the conference.

Download or read book Impact of Series FACTS Devices GCSC TCSC and TCSR on Distance Protection Setting Zones in 400 KV Transmission Line written by Mohamed Zellagui and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Impact of Series FACTS Devices (GCSC, TCSC and TCSR) on Distance Protection Setting Zones in 400 kV Transmission Line.

Download or read book Modelling and Simulation in Science Technology and Engineering Mathematics written by Surajit Chattopadhyay and published by Springer. This book was released on 2018-10-24 with total page 693 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the peer-reviewed proceedings of the International Conference on Modelling and Simulation (MS-17), held in Kolkata, India, 4th-5th November 2017, organized by the Association for the Advancement of Modelling and Simulation Techniques in Enterprises (AMSE, France) in association with the Institution of Engineering Technology (IET, UK), Kolkata Network. The contributions contained here showcase some recent advances in modelling and simulation across various aspects of science and technology. This book brings together articles describing applications of modelling and simulation techniques in fields as diverse as physics, mathematics, electrical engineering, industrial electronics, control, automation, power systems, energy and robotics. It includes a special section on mechanical, fuzzy, optical and opto-electronic control of oscillations. It provides a snapshot of the state of the art in modelling and simulation methods and their applications, and will be of interest to researchers and engineering professionals from industry, academia and research organizations.

Download or read book FACTS Controllers written by K. R PADIYAR and published by . This book was released on 2020-10 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: Key Features:Concepts are explained with illustrative examples and case studies. Applications of SVC, TCSC, GCSC, SPST, STATCOM, SSSC, UPFC, IPFC and IPC for voltage/power control in transmission systems. Application of DSTATCOM, DVR and UPQC for improving power quality in distribution systems. Design of Power Oscillation Damping (POD) controllers. Mitigation of SSR using series FACTS Controllers. About the Book:The emerging technology of Flexible AC Transmission System (FACTS) enables planning and operation of power systems at minimum cost, without compromising security. This is based on modern high power electronic systems that provide fast controllability to ensure 'flexible' operation under changing system conditions. This book presents a comprehensive treatment of the subject by discussing the operating principles, mathematical models, control design and issues that affect the applications.