Improved synergetic excitation control for transient stability enhancement and voltage regulation of power systems |
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| Affiliation: | 1. College of Electrical Engineering and Renewable Energy, China Three Gorges University, Yichang 443002, China;2. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;3. Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool L69 3GJ, UK;1. Institute of Systems and Robotics (ISR-UC) and Department of Electrical and Computer Engineering (DEEC-UC), University of Coimbra, Pólo II, PT-3030-290 Coimbra, Portugal;2. Department of Electrical and Computer Engineering (ECE), Babol Noshirvani University of Technology, Babol, Iran;1. School of Engineering, Deakin University, Waurn Ponds, VIC 3216, Australia;2. School of Software and Electrical Engineering, Swinburne University of Technology, Hawthorn, VIC 3122, Australia;1. Faculty of Electrical and Computer Engineering, University of Kashan, Kashan, Iran;2. Electrical Engineering Department, Amirkabir University of Technology, Tehran, Iran;1. Power System Department, China Electric Power Research Institute, Haidan District, Beijing, China;2. School of Electrical Engineering and Automation, Wuhan University, Wuhan, China |
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| Abstract: | This paper proposes decentralized improved synergetic excitation controllers (ISEC) for synchronous generators to enhance transient stability and obtain satisfactory voltage regulation performance of power systems. Each generator is considered as a subsystem, for which an ISEC is designed. According to the control objectives, a manifold, which is a linear combination of the deviation of generator terminal voltage, rotor speed and active power, is chosen for the design of ISEC. Compared with the conventional synergetic excitation controller (CSEC), a parameter adaptation scheme is proposed for updating the controller parameter online in order to improve the transient stability and voltage regulation performance simultaneously under various operating conditions. Case studies are undertaken on a single-machine infinite-bus power system and a two-area four-machine power system, respectively. Simulation results show the ISEC can provide better damping and voltage regulation performance, compared with the CSEC without parameter adaptation scheme and the conventional power system stabilizer. |
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| Keywords: | Power system Excitation control Transient stability Synergetic control Voltage regulation |
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