Power-Flow Modelling of HVDC Transmission Systems

This book deals exclusively with the power-flow modelling of HVDC transmission systems. Different types of HVDC transmission systems, their configurations/connections and control techniques are covered in detail. Power-Flow modelling of both LCC- and VSC-based HVDC systems is covered in this book. Both the unified and the sequential power-flow methods are addressed. DC grid power-flow controllers and renewable energy resources like offshore wind farms (OWFs) are also incorporated into the power-flow models of VSC-HVDC systems. The effects of the different power-flow methods and HVDC control strategies on the power-flow convergence are detailed along with their implementation. Features: Introduces the power-flow concept and develops the power-flow models of integrated AC/DC systems. Different types of converter control are modelled into the integrated AC/DC power-flow models developed. Both unified and the sequential power-flow methods are addressed. DC grid power-flow controllers like the IDCPFC and renewable energy resources like offshore wind farms (OWFs) are introduced and subsequently modelled into the power-flow algorithms. Integrated AC/DC power-flow models developed are validated by implementation in the IEEE 300-bus and European 1354-bus test networks incorporating different HVDC grids. This book aims at researchers and graduate students in Electrical Engineering, Power Systems, and HVDC Transmission.

Preface Authors List of Abbreviations List of Symbols Chapter 1: HVDC Transmission Systems1.1 Introduction1.2 Interconnections of HVDC Systems1.3 Control of HVDC Systems1.4 Introduction to DC Power-Flow Controllers1.5 Integration of Renewable Energy Sources (RES) to HVDC Grid1.6 Introduction to the Power-Flow Problem and the Newton-Raphson Method1.7 Introduction to the Power-Flow Modelling of LCC-Based Integrated AC-DC Systems1.8 Introduction to the Power-Flow Modelling of VSC-Based Integrated AC-DC Systems1.9 Organization of the Book Chapter 2: Power-Flow Modelling of AC Power Systems integrated with LCC-based Multiterminal DC Grids2.1 Introduction2.2 Modelling of Integrated AC-MLDC Systems2.3 Control Strategies for MLDC Grids2.4 Power Flow Equations of Integrated AC-MLDC Systems2.5 Implementation of Power-Flow in Integrated AC-MLDC Systems2.6 Case Studies and Results2.7 SummaryChapter 3: Power Flow Modelling of AC Power Systems integrated with VSC-based Multiterminal DC Grids employing DC Slack-Bus Control3.1 Introduction3.2 Modelling of Integrated AC-MVDC Systems Employing DC Slack Bus Control3.3 Implementation of Power-Flow in Integrated AC-MVDC Systems3.4 Case Studies and Results3.5 SummaryChapter 4: Power-Flow Modelling of AC Power Systems integrated with VSC-based Multiterminal DCGrids employing DC Voltage Droop Control4.1 Introduction4.2 Modelling of Integrated AC-MVDC Systems Employing DC Voltage Droop Control4.3 Power Flow Equations of Integrated AC- MVDC Systems Employing DC Voltage Droop Control4.4 DC Voltage Droop Control in MVDC Systems4.5 Modelling of AC-MVDC Systems with DC Voltage Droop Control4.6 Case Studies and Results4.7 Summary Chapter 5: Power-Flow Modelling of AC Power Systems integrated with VSC-based Multiterminal DC (AC-MVDC) Grids incorporating Interline DC Power-Flow Controller (IDCPFC)5.1 Introduction5.2 Modelling of AC-MVDC Systems Incorporating IDCPFCs5.3 Power-Flow Equations of Integrated AC-MVDC Systems Incorporating IDCPFC 5.4 Implementation of Power-Flow in Integrated AC-MVDC SystemsIncorporating IDCPFC5.5 Case Studies and Results5.6 SummaryChapter 6: Power-Flow Modelling of AC Power Systems integrated with VSC-based Multiterminal DC (AC-MVDC) Grids incorporating Renewable Energy Sources6.1 Introduction6.2 Modelling of AC-MVDC Systems Incorporating Renewable Energy Sources6.3 Power-Flow Equations of Integrated AC-MVDCSystemswith Renewable Energy Sources 6.4 Modelling of AC-MVDC Systems Employing DC Slack-Bus Control6.5 Modelling of AC-MVDC Systems Employing DC Voltage Droop Control6.6 Case Studies and Results6.7 Summary

Dr. Shagufta Khan received her Ph.D. degree in Electrical Engineering from Delhi Technological University, Delhi, India. She is currently an Assistant Professor with the School of Electrical, Electronics and Communication Engineering, Galgotias University, Greater Noida, India. Her research interests include power systems and renewable energy. She has several publications in national and international journals and conferences including IEEE Transactions on Sustainable Energy, Electrical Power System Research (Elsevier), International Journal of Electrical Power and Energy Systems (Elsevier), Electrical Energy Journal (Springer), AIN Shams Engineering Journal (Elsevier), and Arabian Journal for Science and Engineering (Springer) to her credit. Prof. Suman Bhowmick received his Ph.D. in Electrical Engineering in 2010. He has been working as a Professor in the Department of Electrical Engineering, Delhi Technological University since 2012. His areas of interest are power systems in general, and FACTS and HVDC systems in particular. He has several publications in national and international journals and conferences to his credit. He has also authored a book on FACTS which was published by the CRC Press, USA in 2016.