Control Strategy of Doubly-Fed Induction Generator under Zero Voltage Fault of Power Grid

Yi Ye, Zelin Yang, Jiawei Hu, Haopeng Yi and Lu Zhang ()
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Yi Ye: School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China
Zelin Yang: School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China
Jiawei Hu: School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China
Haopeng Yi: School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China
Lu Zhang: School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China

Sustainability, 2022, vol. 14, issue 23, 1-21

Abstract: For improving the zero-voltage ride through the capability of a doubly fed induction generator in high proportion new energy grid in extreme faults, a coordinated control scheme of hardware and optimal control strategy is proposed. A high-temperature superconductive-fault current limiter suppresses stator fault current, adaptive virtual impedance control and active dynamic reactive power support control act on the back-to-back converter of wind turbines as optimal control strategies. Optimizing the control strategy without changing the controller structure is beneficial to engineering implementation. After mathematical derivation and simulation verification, the coordinated control strategy adopted in this paper can effectively avoid the rotor current and voltage exceeding the limit when the wind turbine is facing extreme faults, actively provide reactive power support for the busbar, realize zero voltage ride through and reduce the risk of high voltage failure at the point of failure. The control effect is obviously better than the traditional virtual impedance control.

Keywords: doubly fed induction generator; zero voltage ride through; high-temperature superconductive-fault current limiter; adaptive virtual impedance control; active dynamic reactive power support control (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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