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Study on the Protection Method of Wind Turbine based on Double Fed Induction Generator in Low Voltages |
Zhang Mei1, Li Xianyun2, Ji Tongzhou1, Wang Shuzheng2 |
1. School of Electrical & Automation Engineering, Nanjing Normal University, Nanjing 210042; 2. College of Electrical Engineering, Nanjing Institute of Technology, Nanjing 211167 |
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Abstract A new protection of inserts series dynamic braking resistor (SDBR) is proposed. The SDBR dissipates the over-active power caused by the voltage drop to ensure uninterrupted operation of DFIG. The transient effect of DFIG was analyzed. The switching control strategy of SDBR via bus voltage stability domain was proposed. According to the Low Voltage fault through (LVRT) requirement for reactive power, the control of reactive power was researched. The simulation result in power system computer aided design and electromagnetic transient including (PSCAD/EMTDC) show that SDBR can effectively help to improve the terminal voltage of DFIG and limit the over-current of stator/rotor and the over-voltage of DC bus, which can improve the transient stability of DFIG in three-phase fault. It also proved that the SDBR guarantees the stable operation of wind power system.
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Published: 22 June 2016
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Cite this article: |
Zhang Mei,Li Xianyun,Ji Tongzhou等. Study on the Protection Method of Wind Turbine based on Double Fed Induction Generator in Low Voltages[J]. Electrical Engineering, 2016, 17(6): 51-55.
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URL: |
http://dqjs.cesmedia.cn/EN/Y2016/V17/I6/51
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