Speaker
Professor Xiao-Ping Zhang, Department of Electronic, Electrical & Systems Engineering University of Birmingham, Edgbaston, Birmingham, UK
Topic
Flexible LCC HVDC System
Abstract
It is well-known that traditional LCC (Line Commutated Converter) HVDC system is the key technology for long distance bulk power transmission. However, the LCC HVDC has two serious shortcomings (a) not being able to control its reactive power and terminal ac voltages; and (b) vulnerable to commutation failures. This presentation will discuss the recent developments in LCC HVDC and how in the concept of Flexible LCC HVDC we can transform the technology to Flexible LCC HVDC with controllable capacitors. The Flexible LCC HVDC will be able to provide fast dynamic reactive power support for the ac systems and eliminate completely the commutation failures. The Flexible LCC HVDC system with controllable capacitors will have the system’s ability of operating under negative extinction angle so as to achieve a wide range of reactive power control and, in particular, the ability of exporting reactive power to the ac grids. Some simulations on RTDS will be shown to demonstrate the effectiveness of the reactive power and voltage control, and commutation failure elimination method.
Speaker's biography
Dr. Zhang is currently Professor in Electrical Power Systems, Director of Smart Grid of Birmingham Energy Institute, and Co-Director of Birmingham Energy Storage Centre at the University of Birmingham, UK. He is also a Guest Professor of Southeast University, Hohai University, and Shanghai University of Electric Power. He was an Alexander-von-Humboldt Fellow with the University of Dortmund, Germany from 1999 to 2000. He co-authored 3 books including the monograph “Flexible AC Transmission Systems: Modeling and Control” (New York: Springer, 2006 and 2012) and “Restructured Electric Power Systems: Analysis of Electricity Markets with Equilibrium Models” (IEEE Press/Wiley in 2010) where two of them have been translated into Chinese. Prof Zhang is an IEEE PES Distinguished Lecturer on HVDC, FACTS and Wave Energy Generation. Professor Zhang is Chair of the IEEE WG on Test Systems for Economic Analysis. Prof Zhang is also Secretary of the IFAC Technical Committee on Power and Energy Systems Control. He is co-founder of the UK-China Smart Grid Workshop Series. He pioneered the concepts of ‘Global Power & Energy Internet’, ‘Energy Union’ and ‘UK’s Energy Valley’.
Invited by: Professor Kankar Bhattacharya