A developed control strategy for mitigating wind power generation transients using superconducting magnetic energy storage with reactive power support |
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| Affiliation: | 1. Department of Electrical Engineering, Faculty of Engineering, Aswan University, Aswan 81542, Egypt;2. Electrical Engineering Department, College of Engineering, Qassim University, King Abdulaziz Road, Unaizah 56434, Qassim, Saudi Arabia;3. Faculty of Engineering, University of the Ryukyus, 1 Senbaru Nishihara-cho, Nakagami, Okinawa 903-0213, Japan;1. Núcleo de Dinâmica de Sistemas Elétricos, Faculdade de Engenharia Elétrica, Universidade Federal de Uberlândia, Campus Santa Mônica, Uberlândia, MG, Brazil;2. Núcleo de Máquinas Elétricas, Faculdade de Engenharia Elétrica, Universidade Federal de Uberlândia, Campus Santa Mônica, Uberlândia, MG, Brazil;1. Faculty of Electrical Engineering, Shahid Beheshti University, Evin, Tehran, Iran;2. Department of Electrical Engineering, West Tehran Branch, Islamic Azad University, Tehran, Iran;1. Department of Electrical Engineering, The Petroleum Institute, Abu Dhabi 2533, United Arab Emirates;2. Electrical Power and Machines Department, Faculty of Engineering, Ain Shams University, Cairo 11517, Egypt;1. Department of Electrical Engineering, Aswan Faculty of Engineering, Aswan University, 81542 Aswan, Egypt;2. Faculty of Engineering, University of the Ryukyus, 1 Senbaru Nishihara-cho, Nakagami, Okinawa 903-0213, Japan;3. Electrical Engineering Department, College of Engineering, Qassim University, King Abdulaziz Road, Unaizah 56434, Qassim, Kingdom of Saudi Arabia;1. Universidad Tecnológica de Pereira, AA: 97 – Post Code: 660003, Pereira, Colombia;2. Universidad Tecnológica de Bolívar, Cartagena, Colombia |
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| Abstract: | The fast variations of wind speed during extreme wind gusts result in fluctuations in both generated power and the voltage of power systems connected to wind energy conversion system (WECS). This paper presents a control strategy which has been tested out using two scenarios of wind gusts. The strategy is based on active and reactive powers controls of superconducting magnetic energy storage (SMES). The WECS includes squirrel cage induction generator (SCIG) with shunt connected capacitor bank to improve the power factor. The SMES system consists of step down transformer, power conditioning unit, DC–DC chopper, and large inductance superconducting coil. The WECS and SMES are connected at the point of common coupling (PCC). Fuzzy logic controller (FLC) is used with the DC–DC chopper to control the power transfer between the grid and SMES coil. The FLC is designed so that the SMES can absorb/deliver active power from/to the power system. Moreover, reactive power is controlled to regulate the voltage profile of PCC. Two inputs are applied to the FLC; the wind speed and SMES current to control the amount active and reactive power generated by SMES. The proposed strategy is simulated in MATLAB/Simulink®. The proposed control strategy of SMES is robust, as it successfully controlled the PCC voltage, active and reactive powers during normal wind speeds and for different scenarios of wind gusts. The PCC voltage was regulated at 1.0 pu for the two studied scenarios of wind gusts. The fluctuation ranges of real power delivered to the grid were decreased by 53.1% for Scenario #1 and 56.53% for Scenario #2. The average reactive power supplied by the grid to the wind farm were decreased by 27.45% for Scenario #1 and 31.13% for Scenario #2. |
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| Keywords: | Wind energy conversion system (WECS) Superconducting magnetic energy storage (SMES) Squirrel cage induction generator (SCIG) Fuzzy logic controller (FLC) Wind gust |
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