Modeling of Voltage Source Converter Based HVDC Transmission System in EMTP-RV. PDF Download
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Author: Patel Hiteshkumar
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Patel Hiteshkumar
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Nagwa F. Ibrahim
Publisher: Springer Nature
ISBN: 303051661X
Category : Technology & Engineering
Languages : en
Pages : 131
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Book Description
This book looks at the control of voltage source converter based high voltage direct current (VSC-HVDC). The objective is to understand the control structure of the VSC-HVDC system and establish the tuning criteria for the proportional-integral (PI) control of the converter controllers. Coverage includes modeling of the VSC-based HVDC transmission system using MATLAB and Simulink simulation package; implementation of control strategies for the VSC-based HVDC transmission system; and analysis of the developed system behavior under different conditions (normal and fault conditions). The book provides researchers, students, and engineers working in electrical power system transmission and power electronics and control in power transmission with a good understanding of the VSC-based HVDC transmission system concept and its behavior.
Author: Minxiao Han
Publisher: Institution of Engineering and Technology
ISBN: 1785613804
Category : Technology & Engineering
Languages : en
Pages : 367
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Book Description
The development of large-scale renewable generation and load electrification call for highly efficient and flexible electric power integration, transmission and interconnection. High Voltage DC (HVDC) transmission technology has been recognized as the key technology for this scenario. HVDC transmissions, including both the line commutated converter (LCC) HVDC and voltage source converter (VSC) HVDC have played an important role in the modern electric power system. However, with the inclusion of power electronic devices, HVDC introduces the characteristics of nonlinearity and different timescales into the traditional electromechanical system and thus careful modeling and simulation of HVDC transmission are essential for power system design, commissioning, operation and maintenance.
Author: Shagufta Khan
Publisher: CRC Press
ISBN: 1000655024
Category : Technology & Engineering
Languages : en
Pages : 291
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Book Description
Discusses steady state (i.e. power flow) solution of integrated AC/DC system for operating any multi-terminal HVDC grid within an existing AC grid Presents a detailed theoretical analysis of the system equilibrium under the different types of converter control HVDC power-flow models developed have been validated by implementation in IEEE 300-bus test network integrated with different HVDC grids DC grid power-flow controllers like the IDCPFC has been introduced and subsequently modeled into the powerflow algorithm Both unified and sequential powerflow models are covered
Author: Vijay K. Sood
Publisher: Springer Science & Business Media
ISBN: 1402078919
Category : Technology & Engineering
Languages : en
Pages : 319
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Book Description
HVDC and FACTS Controllers: Applications of Static Converters in Power Systems focuses on the technical advances and developments that have taken place in the past ten years or so in the fields of High Voltage DC transmission and Flexible AC transmission systems. These advances (in HVDC transmission and FACTS) have added a new dimension to power transmission capabilities. The book covers a wide variety of topics, some of which are listed below: -Current Source and Voltage Source Converters, -Synchronization Techniques for Power Converters, -Capacitor Commutated Converters, -Active Filters, -Typical Disturbances on HVDC Systems, -Simulation Techniques, -Static Var Compensators based on Chain Link Converters, -Advanced Controllers, -Trends in Modern HVDC. In addition to EHV transmission, HVDC technology has impacted on a number of other areas as well. As an example, a chapter dealing with HVDC Light applications is included providing recent information on both on-shore and off-shore applications of wind farms.
Author: Nasima Monsur
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
High Voltage Direct Current (HVDC) transmission systems are used all over the world in frequency-conversion schemes, non-synchronous AC interconnections, submarine DC-links and in many other projects where they enhance AC system stability. HVDC system has many advantages such as fast power flow control, stable and economical operation for long-distance transmission. But the large-scale usage of HVDC transmission is limited by several factors and one of the most important factors is the high cost of conversion equipment. A proposed converter model for the HVDC rectifier system is presented for a possible reduction of the high cost of conversion equipment. This thesis presents an investigation into the viability of a hybrid diode-thyristor HVDC rectifier. In a standard HVDC system, a 12-pulse thyristor-bridge is used. In this thesis, the CIGRE benchmark based HVDC system operating with a weak AC system is presented as the standard model. In the proposed hybrid circuit, the lower 6-pulse thyristor-bridge (which is connected with a Y-Y transformer), is replaced by a cheaper diode-bridge. This reduces the overall capital cost of the 12-pulse rectifier, but has implications regarding the operational behaviour of the HVDC terminal and system. The operational behaviour of this hybrid diode-thyristor rectifier under static and dynamic conditions and the comparison with the standard model are verified with the well-known simulation package called EMTP-RV. Due to unbalanced harmonic cancellation between diode-bridge and thyristor-bridge, the proposed HVDC system generates more characteristic harmonics than the standard model on both AC and DC side. So, an extra filtering unit is needed which will increase the cost of the proposed HVDC model. In the proposed model, only one controller block is needed for the thyristor-bridge as the diode-bridge does not need the controller block. So the cost will be reduced in the proposed model due to the requirement of a single controller block. The controller for optimizing the PI parameters of the proposed HVDC model is designed by using ITAE (Integral of Time multiplied by the Absolute value of the Error) criterion, which is one of the synthetic indexes for evaluating the control system's performance. DC fault is the most severe fault for the converter valves at the rectifier end and it represents one serious operational difficulty with the introduction of the proposed model. It is very difficult to recover from a DC fault like the standard model because of the uncontrolled diode-bridge. So an AC breaker (which is costly equipment) is added to the system to recover from the fault.
Author: Enrique Acha
Publisher: John Wiley & Sons
ISBN: 1119973988
Category : Technology & Engineering
Languages : en
Pages : 414
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Book Description
An authoritative reference on the new generation of VSC-FACTS and VSC-HVDC systems and their applicability within current and future power systems VSC-FACTS-HVDC and PMU: Analysis, Modelling and Simulation in Power Grids provides comprehensive coverage of VSC-FACTS and VSC-HVDC systems within the context of high-voltage Smart Grids modelling and simulation. Readers are presented with an examination of the advanced computer modelling of the VSC-FACTS and VSC-HVDC systems for steady-state, optimal solutions, state estimation and transient stability analyses, including numerous case studies for the reader to gain hands-on experience in the use of models and concepts. Key features: Wide-ranging treatment of the VSC achieved by assessing basic operating principles, topology structures, control algorithms and utility-level applications. Detailed advanced models of VSC-FACTS and VSC-HVDC equipment, suitable for a wide range of power network-wide studies, such as power flows, optimal power flows, state estimation and dynamic simulations. Contains numerous case studies and practical examples, including cases of multi-terminal VSC-HVDC systems. Includes a companion website featuring MATLAB software and Power System Computer Aided Design (PSCAD) scripts which are provided to enable the reader to gain hands-on experience. Detailed coverage of electromagnetic transient studies of VSC-FACTS and VSC-HVDC systems using the de-facto industry standard PSCAD/EMTDC simulation package. An essential guide for utility engineers, academics, and research students as well as industry managers, engineers in equipment design and manufacturing, and consultants.
Author: Dragan Jovcic
Publisher: John Wiley & Sons
ISBN: 1119566541
Category : Technology & Engineering
Languages : en
Pages : 565
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Book Description
Presents the latest developments in switchgear and DC/DC converters for DC grids, and includes substantially expanded material on MMC HVDC This newly updated edition covers all HVDC transmission technologies including Line Commutated Converter (LCC) HVDC; Voltage Source Converter (VSC) HVDC, and the latest VSC HVDC based on Modular Multilevel Converters (MMC), as well as the principles of building DC transmission grids. Featuring new material throughout, High Voltage Direct Current Transmission: Converters, Systems and DC Grids, 2nd Edition offers several new chapters/sections including one on the newest MMC converters. It also provides extended coverage of switchgear, DC grid protection and DC/DC converters following the latest developments on the market and in research projects. All three HVDC technologies are studied in a wide range of topics, including: the basic converter operating principles; calculation of losses; system modelling, including dynamic modelling; system control; HVDC protection, including AC and DC fault studies; and integration with AC systems and fundamental frequency analysis. The text includes: A chapter dedicated to hybrid and mechanical DC circuit breakers Half bridge and full bridge MMC: modelling, control, start-up and fault management A chapter dedicated to unbalanced operation and control of MMC HVDC The advancement of protection methods for DC grids Wideband and high-order modeling of DC cables Novel treatment of topics not found in similar books, including SimPowerSystems models and examples for all HVDC topologies hosted by the 1st edition companion site. High Voltage Direct Current Transmission: Converters, Systems and DC Grids, 2nd Edition serves as an ideal textbook for a graduate-level course or a professional development course.
Author: Rodrigo Teixeira Pinto
Publisher: LAP Lambert Academic Publishing
ISBN: 9783845439747
Category :
Languages : en
Pages : 192
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Book Description
Electricity transmission began with direct current. In 1880, Edison patented the first DC distribution system. That DC system was vital to broaden the use of his most famous invention, the electric lamp. However, at that time, low-voltage DC was proven inefficient. Despite the success of AC systems, the efforts for the development of practical high-voltage direct current transmission (HVDC) continued. The first HVDC transmission system was built in Sweden, in 1954, using mercury-arc valves. Nowadays, modern voltage-source converters (VSC) have smaller space requirements and improved reliability. VSC-HVDC has brought back the interest in the establishment of DC networks for applications such as DC supergrids and transnational networks for offshore wind farms. The goal of this work is to develop a more straightforward simulation model of VSC-HVDC systems; which can be inputted into simulation software packages and still provide realistic and reliable data on the system operation under all circumstances. The major contribution is the integration of the developed model, representing the whole DC transmission link, with the manifold control strategies possible for this new technology.
Author: Mohammed Mabrook Alharbi
Publisher:
ISBN:
Category : Electric power systems
Languages : en
Pages : 49
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Book Description
"Improving the efficiency and operation of power transmission is important due to the continual increase in demand for electric power. In addition, many remote areas throughout the world lack sufficient access to electricity. Unfortunately, utilities cannot satisfy the high demand of power by building new power stations because of economic and environmental reasons. However, utilities can increase generation and transmission line efficiencies by controlling the power flow through their systems. One new attractive technology that enables the control of power flow in the system is Voltage-Source-Converter High Voltage Direct Current (VSC-HVDC) transmission. Multi-terminal-HVDC (M-HVDC) can be built using VSC technology. A model of a three-terminal VSC-HVDC system is presented in this thesis. One of the converters is used to regulate the DC voltage while the others converters control the active power independently and bi-directionally. The vector control strategy and pulse width modulation (PWM) technique are described and implemented in PSCAD/EMTDC. In addition, the region of controllability as a function of power flow has been analyzed. Furthermore, the steady-state and dynamic response characteristics as a function of capacitor size has been investigated"--Abstract, page iii.
