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Abstract
This article presents a magnetic amplifier-based power flow controller as a new approach to control power flow based on a magnetically saturated reactor concept. The magnetic amplifier-based power flow controller uses the magnetic field as control medium to decrease the operating energy losses and increase system reliability. By providing continuous impedance, the magnetic amplifier-based power flow controller can suppress the inter-area oscillation and improve the system stability. A model of magnetic amplifier-based power flow controller is built and verified by lab experiments. A control strategy implementing the magnetic amplifier-based power flow controller is proposed to demonstrate the application of this new device to damp low-frequency oscillation in an interconnected power system. A comparative analysis of the controller's performance is carried out and incorporated with various input signals and multiple loading conditions. The simulations are conducted by power systems CAD (PSCAD, Manitoba Hydro International Ltd., Winnipeg, Canada). The results show the effectiveness of the controller in damping inter-area oscillations.
Additional information
Notes on contributors
Keman Lin
Keman Lin received her B.S. in 2006 from the Department of Electrical Engineering, Southeast University, Nanjing, China, where she is currently working toward her Ph.D. She was a visiting Ph.D. student in University of Tennessee, Knoxville, TN, USA, from September 2011 to September 2013. Her main research interests are power system stability and control.
Kevin Tomsovic
Kevin Tomsovic received his B.S. in electrical engineering from Michigan Technological University, Houghton, MI, USA, in 1982 and his M.S. and Ph.D. in electrical engineering from University of Washington, Seattle, WA, USA, in 1984 and 1987, respectively. Currently, he is professor of the Department of Electrical Engineering and Computer Science, University of Tennessee, Knoxville, TN, USA, where he also directs the NSF/DOE-sponsored ERC CURENT. He was on the faculty of Washington State University from 1992–2008. He held the Advanced Technology for Electrical Energy Chair at Kumamoto University, Kumamoto, Japan, from 1999 to 2000 and was an NSF program director in the Division of Electrical and Communication Systems (ECS) division of the engineering directorate from 2004 to 2006. His research interests include intelligent systems and optimization methodologies applied to various power system problems, including wide area control, distribution systems, electricity markets, equipment diagnostics and maintenance, control of dispersed energy resources, power system control and production scheduling.
Qiulan Wan
Qiulan Wan received her M.S. and Ph.D. from Southeast University, Nanjing, China, in 1985 and 2002, respectively. Currently, she is a professor in the School of Electrical Engineering, Southeast University, where she has been since 1977. Her research interests include power system operation, control, and the electricity market.
Aleksandar Dimitrovski
Aleksandar Dimitrovski received his B.Sc. and Ph.D. in electrical engineering with emphasis in power from University Ss. Cyril & Methodius, Macedonia, and his M.Sc. in applied computer sciences from University of Zagreb, Croatia. He is a chief technical scientist in power and energy systems at Oak Ridge National Laboratory, Oak Ridge, TN, USA, and a joint faculty member at University of Tennessee, Knoxville, TN, USA. Before coming to the United States, he was a tenured assistant professor (docent) at University Ss. Cyril & Methodius. His research areas of interest are focused on uncertain power systems and their modeling, analysis, protection, and control.