Coordinated voltage control of wind-penetrated power systems via state feedback control |
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| Affiliation: | 1. Electrical Engineering Department of SEPI-ESIME Zacatenco, Instituto Politécnico Nacional, Mexico City, Mexico;2. Electrical and Computer Engineering Department, Western Michigan University, Kalamazoo, MI, USA;1. Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science & Technology, Nanjing 210044, China;2. Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology (CICAEET), Nanjing University of Information Science & Technology, Nanjing 210044, China;3. School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;1. Cardiff University, Cardiff CF24 3AA, UK;2. China Electric Power Research Institute, 15 Xiaoyingdonglu, Haidian District, Beijing 100192, China;1. Young Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran;2. School of Engineering and ICT, University of Tasmania, Hobart, TAS 7000, Australia;3. Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz 51666-15813, Iran;4. Engineering Faculty, Near East University, 99138 Nicosia, North Cyprus, Mersin 10, Turkey |
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| Abstract: | This paper presents an optimal coordinated voltage control scheme for preserving long-term voltage stability of power systems. Linear quadratic integral (LQI) controller is employed to construct this scheme. Also, this paper considers the detailed dynamic model of doubly-fed induction generator (DFIG) wind turbine, synchronous generators, over excitation limiter (OEL) and under-load tap changer (ULTC) system, which are important elements influencing voltage stability of power systems. The proposed approach at each time instance involves following two major steps: First, the power system nonlinear equations are linearized and optimal controllers are obtained by LQI technique. Then, in the second step the system dynamic behavior is investigated via time-domain simulations by applying the attained optimal control signals at the first step. The impact of the proposed coordinated voltage control scheme is evaluated by time domain simulations on a well-known test system, under variable wind speed and fault conditions. |
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| Keywords: | Coordinated voltage control doubly fed induction generator (DFIG) linear quadratic integral (LQI) controller |
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