Abstract
An active disturbance rejection controller (ADRC) is developed for load frequency control (LFC) and voltage regulation respectively in a power system. For LFC, the ADRC is constructed on a three-area interconnected power system. The control goal is to maintain the frequency at nominal value (60Hz in North America) and keep tie-line power flow at scheduled value. For voltage regulation, the ADRC is applied to a static var compensator (SVC) as a supplementary controller. It is utilized to maintain the voltages at nearby buses within the ANSI C84.1 limits (or ±5% tolerance). Particularly, an alternative ADRC with smaller controller gains than classic ADRC is originally designed on the SVC system. From power generation and transmission to its distribution, both voltage and frequency regulating systems are subject to large and small disturbances caused by sudden load changes, transmission faults, and equipment loss/malfunction etc. The simulation results and theoretical analyses demonstrate the effectiveness of the ADRCs in compensating the disturbances and achieving the control goals.
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Lili DONG received the Ph. D. degree in Electrical Engineering from the University of Alabama, Tuscaloosa, AL, U.S.A., in 2005. She is an associate professor in the Department of Electrical Engineering and Computer Science at Cleveland State University, Cleveland, OH, U.S.A. She is the chair of IEEE Control Systems Society, Cleveland Chapter. Her current research interests include control systems design and implementations, and control applications to power systems, automobiles, marine ships, and Microelectro Microelectro-Mechanical Systems (MEMS). She is an editor for the Proceedings of the American Control Conference and an associate editor of ISA Transactions.
Anusree MANDALI received her M.Sc. degree in Electrical Engineering from Cleveland State University, Cleveland, OH, U.S.A., in 2017. She is a Ph.D. candidate in the Department of Electrical Engineering and Computer Science at Cleveland State University. She is a student member of IEEE and the President of HKN Honor Society, Epsilon Alpha Chapter, 2018. Her research interests focus on the disturbance rejection control of power systems.
Allen G. MORINEC received his Ph.D. from Cleveland State University in 2005. He has worked in the areas of transmission and distribution power systems at FirstEnergy Corporation where he is currently a supervisor in the Transmission and Substation Services Department, Protection & Control section and is a registered professional engineer in Ohio. His fields of interest include protective relay & control, substation maintenance, FACTS devices, power quality, industrial & commercial power systems, and the National Electrical Code. Dr. Morinec is an Adjunct Professor in the Department of Electrical and Computer Engineering at Cleveland State University where he instructs Power Systems and other courses. Dr. Morinec is a Senior Member of the IEEE and was awarded the “IEEE Third Millennium Medal for Outstanding Support and Achievement”.
Yang ZHAO received his M.Sc. degree in Electrical Engineering from Cleveland State University, Cleveland, OH, U.S.A., in 2013. He is a Ph.D. candidate in the Department of Electrical Engineering and Computer Science at Cleveland State University. He is a student member of IEEE and he served as the President of HKN Honor Society, Epsilon Alpha Chapter, in 2016. His research interests include the robust speed control of permanent magnet synchronous motors, the path-following control of under-actuated ships, and the disturbance rejection control of power systems.
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Dong, L., Mandali, A., Morinec, A. et al. Active disturbance rejection based load frequency control and voltage regulation in power systems. Control Theory Technol. 16, 336–350 (2018). https://doi.org/10.1007/s11768-018-8112-3
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DOI: https://doi.org/10.1007/s11768-018-8112-3