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Energies 2018, 11(4), 945; https://doi.org/10.3390/en11040945

A System Transient Stability Enhancement Control Method Using Doubly Fed Induction Generator Wind Turbine with Considering Its Power Constraints

State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Shapingba District, Chongqing 400044, China
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Received: 10 March 2018 / Revised: 31 March 2018 / Accepted: 10 April 2018 / Published: 16 April 2018
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

With the rapid development of wind power, the effects of doubly fed induction generators (DFIGs) on the transient stability of power system have attracted more attention. However, the effects are still not clear due to the lack of deep and theoretical analysis. A control method for enhancing system rotor angle stability enhancement is proposed with considering the power constraints of DFIG. The rotor angle oscillation of the synchronous generator (SG) can be reduced and overspeed and the overcurrent of DFIG can be avoided. In this paper, the effects of the DFIG on the rotor angle characteristics of SG are analyzed. The change law of system rotor angle varying with transient power of the DFIG is obtained. Then, the power equation in the emergency pitch control process is explored. The reactive power constraints of the stator and grid-side converter are deduced. Finally, the system rotor angle stability enhancement control method is proposed based on the power constraints of DFIG. The effectiveness of proposed method is proven by simulations. View Full-Text
Keywords: doubly fed induction generator; transient stability; rotor speed; reactive power; short circuit doubly fed induction generator; transient stability; rotor speed; reactive power; short circuit
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Zheng, D.; Ouyang, J.; Xiong, X.; Xiao, C.; Li, M. A System Transient Stability Enhancement Control Method Using Doubly Fed Induction Generator Wind Turbine with Considering Its Power Constraints. Energies 2018, 11, 945.

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