Control Improvement and Simulation of DFIG under Power Grid Failure

doi:10.16182/j.issn1004731x.joss.18-0129

Abstract

Abstract: Following the increasing scale of installed wind power, the wind turbines, as an important part of the future energy internet, its ability to cope with the fault of the power grid becomes more and more important. Aiming at the transient characteristics of doubly fed induction generator (DFIG) under power grid fault, a comprehensive control strategy, based on the classification of power grid faults, the optimization of controller parameters and auxiliary equipments, is proposed. Compared with the traditional control method, the large control error and response lag is overcome, and the fine control is realized. Based on MATLAB and VC++ combined modeling MEX technology, a doubly fed wind power generation system model under grid fault is built. Simulation results verify the effectiveness of the proposed integrated control strategy.

Key words: Power grid fault, doubly fed wind generator, transient characteristics, integrated control

CLC Number:

TM315

Zhang Hongyang, Shi Zhentang, Zhang Zhifeng. Control Improvement and Simulation of DFIG under Power Grid Failure[J]. Journal of System Simulation, 2020, 32(2): 299-305.

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