Download or read book Analysis of Short Circuit Current Contribution for Wind Turbine Generators written by Prof. Chintan Mehta and published by . This book was released on 2019-02-24 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: The electrical energy generation is the growth engine of any nation. Till last decade, the electrical power generation was basically produced by thermal energy but due to environmental impacts the focus of electrical energy generation shifts towards renewable energy sources. Out of various renewable sources available for electrical energy generation, the main focus is on wind and solar energy to generate the electrical energy. Penetration of wind energy is increased exponentially, but as compared with conventional energy it is highly intermittent in nature. It is a challenge to synchronize the wind energy in to the conventional power grid. In this thesis, short-circuit current is calculated as per IEC-60909 and it is veried using PSCAD/EMTDC software fora single machine connected to a single load. The standard IEEE 14 Bus system is analyzed using PSCAD/EMTDC. In standard IEEE 14 Bus system, MVA method is used for calculating the short circuit current under 3 phase to ground fault condition and it is veried using PSCAD/EMTDC for all the buses. The single circuit model is introduced to analyze the concept of asymmetrical fault current. The behavior of Synchronous machine, Induction machine and doubly fed induction generator (DFIG) are analyzed under the 3 phase to ground symmetrical fault condition. The short circuit current contribution of DFIG is calculated analytically and the same is validated by PSCAD/EMTDC software under various wind speeds and by considering certain voltage drops of the generator output. The behavior of DFIG and conventional induction generator is analyzed during steady-state and faulty condition under the comparable ratings and parameters. The IEEE 1547 and Indian grid code standard with Low Voltage Ride Through (LVRT) is analyzed or WTGs.

Download or read book Short Circuit Current Contribution for Different Wind Turbine Generator Types written by and published by . This book was released on 2010 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents simulation results for short-circuit current contribution for different types of WTGs obtained through transient analysis using generic WTG models.

Download or read book Standard Calculation of Fault Current Contribution of Doubly Fed Induction Generator Based Wind Turbine written by Ahmed El-Naggar and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The fault current contribution of the doubly fed induction generator-based wind turbines (DFIG-WTs) is dictated by a combination of factors, including the electrical parameters of the machine and the controller configuration of the converters. A detailed manufacturer-based simulation model for DFIG-WT was used for detailed analysis of the controller influences on short-circuit parameters. Based on the analysis, new approximate expressions of the short-circuit parameters were introduced and a new mathematical model of the short-circuit current were developed. The mathematical models and the expressions were later validated using nonlinear optimization for parameter extraction. Subsequently, a new method was introduced for fault current contribution calculation in a simple and reliable way similar to IEC-60909. The method is based on linearization and a newly introduced correction factor that takes the influence of the controller into account. Finally, the new introduced method was tested on a small wind farm and the results show better accuracy in comparison with IEC-60909.

Download or read book Wind Energy Generation Modelling and Control written by Olimpo Anaya-Lara and published by John Wiley & Sons. This book was released on 2011-08-24 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: WIND ENERGY GENERATION WIND ENERGY GENERATION MODELLING AND CONTROL With increasing concern over climate change and the security of energy supplies, wind power is emerging as an important source of electrical energy throughout the world. Modern wind turbines use advanced power electronics to provide efficient generator control and to ensure compatible operation with the power system. Wind Energy Generation describes the fundamental principles and modelling of the electrical generator and power electronic systems used in large wind turbines. It also discusses how they interact with the power system and the influence of wind turbines on power system operation and stability. Key features: Includes a comprehensive account of power electronic equipment used in wind turbines and for their grid connection. Describes enabling technologies which facilitate the connection of large-scale onshore and offshore wind farms. Provides detailed modelling and control of wind turbine systems. Shows a number of simulations and case studies which explain the dynamic interaction between wind power and conventional generation.

Download or read book Short Circuit Current Contribution for Different Wind Turbine Generator Types written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Power Systems Modelling and Fault Analysis written by Nasser Tleis and published by Academic Press. This book was released on 2019-06-12 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt: Power Systems Modelling and Fault Analysis: Theory and Practice, Second Edition, focuses on the important core areas and technical skills required for practicing electrical power engineers. Providing a comprehensive and practical treatment of the modeling of electrical power systems, the book offers students and professionals the theory and practice of fault analysis of power systems, covering detailed and advanced theories and modern industry practices. The book describes relevant advances in the industry, such as international standards developments and new generation technologies, such as wind turbine generators, fault current limiters, multi-phase fault analysis, the measurement of equipment parameters, probabilistic short-circuit analysis, and more. Includes a fully up-to-date guide to the analysis and practical troubleshooting of short-circuit faults in electricity utilities and industrial power systems Presents sections on generators, transformers, substations, overhead powerlines and industrial systems Covers best-practice techniques, safety issues, power system planning and economics

Download or read book Wind Power Plant Short Circuit Current Contribution for Different Fault and Wind Turbine Topologies written by Vahan Gevorgian and published by . This book was released on 2010 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important aspect of wind power plant (WPP) impact studies is to evaluate the short-circuit (SC) current contribution of the plant into the transmission network under various fault conditions such as single, two, and three-phase faults in different network locations. This task can be challenging to protection engineers due to the topology differences between different types of wind turbine generators (WTGs) and conventional generating units. This paper presents simulation results for SC current contribution for WTGs obtained through transient simulation. The obtained waveforms are analyzed to explain the behavior, such as peak values and rate of decay, of the WTG.

Download or read book Short circuit Currents in Wind turbine Generator Networks written by Dustin F. Howard and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Protection of both the wind plant and the interconnecting transmission system during short-circuit faults is imperative for maintaining system structural integrity and reliability. The circuit breakers and protective relays used to protect the power system during such events are designed based upon calculations of the current that will flow in the circuit during the fault. Sequence-network models of various power-system components, such as synchronous generators, transformers, transmission lines, etc., are often used to perform these calculations. However, there are no such models widely accepted for certain types of wind-turbine generators used in modern wind plants. The problem with developing sequence-network models of wind plants is that several different wind-turbine generator designs exist; yet, each exhibit very different short-circuit behavior. Therefore, a "one size fits all" approach is not appropriate for modeling wind plants, as has been the case for conventional power plants based on synchronous-generator technology. Further, many of the newer wind-turbine designs contain proprietary controls that affect the short-circuit behavior, and wind-turbine manufacturers are often not willing to disclose these controls. Thus, protection engineers do not have a standard or other well-established model for calculating short-circuit currents in power systems with wind plants. Therefore, the research described in this dissertation involves the development of such models for calculating short-circuit currents from wind-turbine generators. The focus of this dissertation is on the four existing wind-turbine generator designs (identified as Types 1 -- 4). Only AC-transmission-interconnected wind-turbine generators are considered in this dissertation. The primary objective of this research is the development of sequence-network models, which are frequency-domain analysis tools, for each wind-turbine generator design. The time-domain behavior of each wind-turbine generator is thoroughly analyzed through transient simulations, experimental tests on scaled wind-turbine generator test beds, and solutions to the system dynamic equations. These time-domain analyses are used to support the development of the sequence-network models.

Download or read book Investigating Short Circuit Models for Wind Turbine Generators written by Malati Chaudhary and published by . This book was released on 2013 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Short circuit study needs to be performed at the planning stage before connecting large generators with the electric grid. This study will reveal the impact of new generation on the fault levels of the grid. The fault levels will determine the rating of nearby equipment and setting of relays. However, a short circuit model of synchronous generator is well documented, such models are not adequately known for Wind Turbine Generators (WTGs). This dissertation describes detailed time domain models of all types of WTGs, commonly classified as Type 1, Type 2, type 3, and Type 4. MOdels of Type 1, 2, and 3 are validated using field data. Using these models, short circuit models are developed. Simulation and short circuit modeling of Type 2 WTG and wind farms having this type of WTGs are validated using actual field data from Mountain wind farm located in Wyoming, USA. Some insight into the selection of circuit breakers in the wind farm is also offered. A simple yet accurate equivalencing procedure for large wind farms is also proposed. This analysis also applies to Type 1 WTG. Simulation and short circuit modeling of Type 3 WTG and wind farms having this type of WTGs are developed. This model assumes that the rotor circuit is crowbarred during fault. The model is validated using actual field data from Three Buttes wind farm in Wyoming, USA. Valuable insight about the status of crowbar during faults is achieved through this model.

Download or read book Symmetrical and Unsymmetrical Fault Currents of a Wind Power Plant written by and published by . This book was released on 2011 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper investigates the short-circuit behavior of a wind power plant for different types of wind turbines. Both symmetrical faults and unsymmetrical faults are investigated. The size of wind power plants (WPPs) keeps getting bigger and bigger. The number of wind plants in the U.S. has increased very rapidly in the past 10 years. It is projected that in the U.S., the total wind power generation will reach 330 GW by 2030. As the importance of WPPs increases, planning engi-neers must perform impact studies used to evaluate short-circuit current (SCC) contribution of the plant into the transmission network under different fault conditions. This information is needed to size the circuit breakers, to establish the proper sys-tem protection, and to choose the transient suppressor in the circuits within the WPP. This task can be challenging to protec-tion engineers due to the topology differences between different types of wind turbine generators (WTGs) and the conventional generating units. This paper investigates the short-circuit behavior of a WPP for different types of wind turbines. Both symmetrical faults and unsymmetrical faults are investigated. Three different soft-ware packages are utilized to develop this paper. Time domain simulations and steady-state calculations are used to perform the analysis.

Download or read book Wind Power Plant Short Circuit Current Contribution for Different Fault and Wind Turbine Topologies written by Vahan Gevorgian and published by . This book was released on 2010 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important aspect of wind power plant (WPP) impact studies is to evaluate the short-circuit (SC) current contribution of the plant into the transmission network under various fault conditions such as single, two, and three-phase faults in different network locations. This task can be challenging to protection engineers due to the topology differences between different types of wind turbine generators (WTGs) and conventional generating units. This paper presents simulation results for SC current contribution for WTGs obtained through transient simulation. The obtained waveforms are analyzed to explain the behavior, such as peak values and rate of decay, of the WTG.

Download or read book Analysis of Short Circuit Current Contribution for Different Generators written by Hardikumar Gohil and published by . This book was released on 2019-03-03 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, Short circuit current is calculated as per IEC-60909 and it is verified using PSCAD/EMTDC. The standard IEEE14 Bus system is analyzed using PSCAD/EMTDC. In standard IEEE 14 Bus system, MVA method is used for calculating the short circuit current under 3 phase to ground fault condition and it is verified using PSCAD/EMTDC for all the buses. The single circuit model is introduced to analyze the concept of asymmetrical fault current. The behavior of Synchronous machine, Induction machine and doubly fed induction generator (DFIG) are analyzed under the 3 phase to ground symmetrical fault condition. The short circuit current contribution of DFIG is calculated analytically and the same is validated by PSCAD/EMTDC software under various wind speeds and by considering certain voltage drops of the generator output. The behavior of DFIG and conventional induction generator is analyzed during steady-state and faulty condition under the comparable ratings and parameters. The IEEE 1547 and Indian grid code standard with Low Voltage Ride Through (LVRT) is analyzed for WTGs.

Download or read book Power System Dynamics with Computer Based Modeling and Analysis written by Yoshihide Hase and published by John Wiley & Sons. This book was released on 2020-01-21 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique combination of theoretical knowledge and practical analysis experience Derived from Yoshihide Hases Handbook of Power Systems Engineering, 2nd Edition, this book provides readers with everything they need to know about power system dynamics. Presented in three parts, it covers power system theories, computation theories, and how prevailed engineering platforms can be utilized for various engineering works. It features many illustrations based on ETAP to help explain the knowledge within as much as possible. Recompiling all the chapters from the previous book, Power System Dynamics with Computer Based Modeling and Analysis offers nineteen new and improved content with updated information and all new topics, including two new chapters on circuit analysis which help engineers with non-electrical engineering backgrounds. Topics covered include: Essentials of Electromagnetism; Complex Number Notation (Symbolic Method) and Laplace-transform; Fault Analysis Based on Symmetrical Components; Synchronous Generators; Induction-motor; Transformer; Breaker; Arrester; Overhead-line; Power cable; Steady-State/Transient/Dynamic Stability; Control governor; AVR; Directional Distance Relay and R-X Diagram; Lightning and Switching Surge Phenomena; Insulation Coordination; Harmonics; Power Electronics Applications (Devices, PE-circuit and Control) and more. Combines computer modeling of power systems, including analysis techniques, from an engineering consultants perspective Uses practical analytical software to help teach how to obtain the relevant data, formulate what-if cases, and convert data analysis into meaningful information Includes mathematical details of power system analysis and power system dynamics Power System Dynamics with Computer-Based Modeling and Analysis will appeal to all power system engineers as well as engineering and electrical engineering students.

Download or read book Grid Integration and Dynamic Impact of Wind Energy written by Vijay Vittal and published by Springer Science & Business Media. This book was released on 2012-07-23 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grid Integration and Dynamic Impact of Wind Energy details the integration of wind energy resources to the electric grid worldwide. Authors Vijay Vittal and Raja Ayyanar include detailed coverage of the power converters and control used in interfacing electric machines and power converters used in wind generators, and extensive descriptions of power systems operation and control to accommodate large penetration of wind resources. Key concepts will be illustrated through extensive power electronics and power systems simulations using software like MATLAB, Simulink and PLECS. The book addresses real world problems and solutions in the area of grid integration of wind resources, and will be a valuable resource for engineers and researchers working in renewable energy and power.

Download or read book Advanced Electrical and Electronics Engineering written by Jian Lee and published by Springer Science & Business Media. This book was released on 2011-04-13 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2010 First International Conference on Electrical and Electronics Engineering was held in Wuhan, China December 4-5. Advanced Electrical and Electronics Engineering book contains 72 revised and extended research articles written by prominent researchers participating in the conference. Topics covered include, Power Engineering, Telecommunication, Control engineering, Signal processing, Integrated circuit, Electronic amplifier, Nano-technologies, Circuits and networks, Microelectronics, Analog circuits, Digital circuits, Nonlinear circuits, Mixed-mode circuits, Circuits design, Sensors, CAD tools, DNA computing, Superconductivity circuits. Electrical and Electronics Engineering will offer the state of art of tremendous advances in Electrical and Electronics Engineering and also serve as an excellent reference work for researchers and graduate students working with/on Electrical and Electronics Engineering.

Download or read book Short Circuit Modeling and Protection Implementation for a Type 3 Wind Turbine Generator Facility Using ASPEN OneLiner written by Christopher Zubia and published by . This book was released on 2014 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thesis presented on addressing the modeling requirements for short circuit contributions from Type 3 wind turbine generators. This research can be used by electric utilities for transmission level protective relay coordinating using the ASPEN OneLiner software. This thesis will discuss four different short circuit modeling approaches which can be used for interconnected groups of Type 3 wind turbine generators and their implementation into a short circuit software model. These approaches' fault current outputs will be compared with the fault current results from the traditional full detail model approach. This research also sheds light on the protection practices the transmission utility can use to protect their transmission lines when interconnected with a wind turbine generating facility. The distance and differential schemes presented in this document are validated through the OneLiner software.

Download or read book Large Grid Connected Wind Turbines written by Frede Blaabjerg and published by MDPI. This book was released on 2019-04-02 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the technological progress and developments of a large-scale wind energy conversion system along with its future trends, with each chapter constituting a contribution by a different leader in the wind energy arena. Recent developments in wind energy conversion systems, system optimization, stability augmentation, power smoothing, and many other fascinating topics are included in this book. Chapters are supported through modeling, control, and simulation analysis. This book contains both technical and review articles.