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首页> 外文期刊>IEEE Transactions on Energy Conversion >Flicker Study on Variable Speed Wind Turbines With Doubly Fed Induction Generators
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Flicker Study on Variable Speed Wind Turbines With Doubly Fed Induction Generators

机译：带有双馈感应发电机的变速风力发电机的闪烁研究

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摘要

Grid connected wind turbines may produce flicker during continuous operation. This paper presents a simulation model of a MW-level variable speed wind turbine with a doubly fed induction generator developed in the simulation tool of PSCAD/EMTDC. Flicker emission of variable speed wind turbines with doubly fed induction generators is investigated during continuous operation, and the dependence of flicker emission on mean wind speed, wind turbulence intensity, short circuit capacity of grid and grid impedance angle are analyzed. A comparison is done with the fixed speed wind turbine, which leads to a conclusion that the factors mentioned above have different influences on flicker emission compared with that in the case of the fixed speed wind turbine. Flicker mitigation is realized by output reactive power control of the variable speed wind turbine with doubly fed induction generator. Simulation results show the wind turbine output reactive power control provides an effective means for flicker mitigation regardless of mean wind speed, turbulence intensity and short circuit capacity ratio.
机译：并网风力涡轮机在连续运行期间可能会产生闪烁。本文介绍了在PSCAD / EMTDC仿真工具中开发的带有双馈感应发电机的MW级变速风力发电机的仿真模型。研究了带有双馈感应发电机的变速风力发电机在连续运行期间的闪变辐射，分析了闪变辐射对平均风速，风湍流强度，电网短路容量和电网阻抗角的影响。对定速风力发电机进行了比较，得出的结论是，与定速风力发电机相比，上述因素对闪变的影响不同。通过双馈感应发电机对变速风力涡轮机的输出无功控制，可以减轻闪烁。仿真结果表明，无论平均风速，湍流强度和短路容量比如何，风力涡轮机的输出无功控制都可以有效地减轻闪烁。

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