High Voltage Direct Current Transmission

(Converters, Systems and DC Grids)

by Dragan Jovcic and Khaled Ahmed

Published by John Wiley & Sons, Ltd, UK

Printed by C.O.S. Printers Pte Ltd, Singapore

ISBN-13: 978-1-118-84666-7 (cloth)

 

The development, installation and penetration of large scale renewable generation such as off-shore wind farms or solar installations is one of the drivers in the increased interest in high-voltage direct-current (HVDC) transmission. Considering the fact that both off-shore or other large wind farms or solar installations are located far away from the major load centers, while at the same time the existing transmission systems are not designed to integrate the renewable generation, many utilities around the world are looking at taking advantage of the benefits that HVDC transmission can offer in the development of the Super Grids of the future.
The integration of HVDC systems with the traditional high-voltage AC systems introduces a range of challenges to the protection and control systems which requires a good understanding of their principles of operation and impact.

The authors of the book, Professor Jovcic and Dr Ahmed, are with the University of Aberdeen in Scotland, UK and have extensive teaching and research experience in HVDC and renewable energy, as well as participation in IEEE and CIGRE activities. This gives them a broad perspective of the theoretical and practical aspects of the topics covered in the more than 400 pages book.

Part I includes eleven chapters and is focused on HVDC with Current Source Converters. It starts with an introduction of Line-Commutated Converters (LCC) HVDC, thyristors and six-pulse diode and thyristor converters. HVDC rectifier and inverter station modelling, control and synchronization with AC systems are covered in several chapters together with their analytical modelling and stability. HVDC phasor modeling and interactions with AC systems are also described. Of specific interest to protection specialists are the chapters covering fault management and HVDC systems protection.

The next ten chapters of the book are grouped in Part II which focuses on HVDC with Voltage Source Converters (VSC). It starts with the analysis of VSC HVDC applications, topologies, performance and cost comparisons with LCC HVDC. Single-phase and three-phase two level and multilevel VSC converters and their modelling, control and dynamics are later described. The last two chapters in this part cover the behavior of VSC HVDC under AC and DC fault conditions and their application for AC grid support and operation with passive AC systems.

The last six chapters of the book belong to Part III which concentrates on DC transmission grids. After and introduction, LCC and VSC DC grids are described, followed by the analysis of DC grid control, fault management, DC circuit breakers and power flow controlling devices.
From the above it is clear that the book provides a comprehensive coverage of HVDC technology and DC transmission grids. Together with the companion website that hosts SIMULINK SimPowerSystems models with examples for all HVDC topologies, the book is a valuable tool that will help PAC specialists become familiar with this technology and its impact on the electric power grids of the future.

The authors of the book, Professor Jovcic and Dr. Ahmed, are with the University of Aberdeen in Scotland, UK and have extensive teaching and research experience in HVDC and renewable energy, as well as participation in IEEE and CIGRE activities.

 

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