适用于中长期仿真的风电场模型

Wind farm models suitable for mid-term and long-term simulation

永磁直驱式风力发电机组由于其效率和可靠性高等优点在风电场中所占比重越来越大,而以往的建模分析多以适用于电磁暂态的详细模型为主,对于分析大规模系统扰动以及由此引发的有功和无功之间不平衡等现象的中长期过程不再适用。本文以适用于中长期仿真分析的永磁直驱式风力发电机组为研究对象,首先建立了适用于中长期仿真的永磁直驱式风电机组的简化模型,然后提出了相应的风电场模型,设计了风电场有功功率和无功功率的调节系统,最后进行了相关的仿真验证,结果表明所提出的风电场中长期简化模型是正确且有效的。

Direct-drive permanent magnet synchronous generator（ PMSG） wind turbines make up a growing portion of the wind farm because of its high efficiency and reliability. Previous modeling analysis mainly applies to the electromagnetic transient detail model,but it doesn＇t apply to the long-term process,such as large-scale system disturbance and the imbalance between active and reactive power caused by it. This paper takes the wind farm model made up of PMSG wind turbines,which is suitable for mid-term and long-term simulation as the research object.Firstly,the simplified model of the PMSG wind turbine suitable for mid-term and long-term simulation is established in this paper. And then the corresponding model of wind farm is put forward,which has the ability to adjust the active power and reactive power. Finally related simulations are carried out. The simulation results prove the correctness of the proposed simplified model and the effectiveness of wind farm model used in mid-term and long-term simulation process.