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首页> 外文期刊>Mathematical Problems in Engineering >A Novel Control Strategy of DFIG Based on the Optimization of Transfer Trajectory at Operation Points in the Islanded Power System
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A Novel Control Strategy of DFIG Based on the Optimization of Transfer Trajectory at Operation Points in the Islanded Power System

机译：基于孤岛电力系统运行点转移轨迹优化的双馈双馈新控制策略

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摘要

A novel control strategy based on the optimization of transfer trajectory at operation points for DFIG is proposed. Aim of this control strategy is to reduce the mechanical fatigue of DFIG caused by the frequent adjustment of rotating speed and pitch angle when operating in the islanded power system. Firstly, the stability of DFIG at different operation points is analyzed. Then an optimization model of transfer trajectory at operation points is established, with the minimum synthetic adjustment amount of rotating speed and pitch angle as the objective function and with the balance of active power and the stability of operation points as the constraint conditions. Secondly, the wind speed estimator is designed, and the control strategy of pitch system is improved to cooperate with the indirect stator flux orientation control technology for rotor-side inverter control. Then by the coordination control of its rotating speed and pitch angle, an operation trajectory controller is established to ensure the islanded operation of DFIG along the optimal transfer trajectory. Finally, the simulation results show that the proposed control strategy is technical feasibility with good performance.
机译：提出了一种基于DFIG操作点转移轨迹优化的新型控制策略。此控制策略的目的是减少在孤岛电力系统中运行时频繁调整转速和俯仰角而引起的DFIG机械疲劳。首先，分析了DFIG在不同工作点的稳定性。然后建立了以工作点的转速和俯仰角的最小综合调整量为目标函数，以有功功率的平衡和工作点的稳定性为约束条件的工作点转移轨迹的优化模型。其次，设计了风速估计器，并改进了变桨系统的控制策略，与间接定子磁链定向控制技术相结合，用于转子侧逆变器控制。然后，通过对其转速和俯仰角的协调控制，建立了运行轨迹控制器，以确保DFIG沿着最优传递轨迹进行孤岛式运行。最后，仿真结果表明所提出的控制策略具有良好的技术可行性。

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  • 来源
    《Mathematical Problems in Engineering》 |2016年第4期|3925879.1-3925879.10|共10页
  • 作者

    Mi Zengqiang; Liu Liqing; Yuan He; Du Ping; Wan Yuliang;

  • 作者单位

    State Key Lab Alternate Elect Power Syst Renewabl, Baoding 071003, Peoples R China;

    State Key Lab Alternate Elect Power Syst Renewabl, Baoding 071003, Peoples R China;

    State Key Lab Alternate Elect Power Syst Renewabl, Baoding 071003, Peoples R China;

    State Grid East Inner Mongolia Elect Power Co Ltd, Power Dispatching Control Ctr, Hohhot 010020, Peoples R China;

    State Grid East Inner Mongolia Elect Power Co Ltd, Power Dispatching Control Ctr, Hohhot 010020, Peoples R China;

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