基于双馈感应发电机风电场等效建模中控制器聚合方法分析

发布时间：2019-05-20 14:52

【摘要】：在对风电场进行等效建模时,一般以风电机组运行状态相近为原则进行分群聚合,从而得到风电场的多机等效模型。如果在保证精度的情况下能够对运行状态有明显差异的风电机组进行聚合,将有助于建立更加简化的风电场等效模型。以基于双馈感应发电机(DFIG)的风电场为研究对象,针对承受风速有显著差异的DFIG机组的聚合问题,提出了相应的DFIG机组转子侧控制器聚合方法。该方法通过调整等效控制器的控制参考值,来提高风电场等效模型的稳态和动态精度,从而实现风速差异显著的DFIG机组的聚合。文中给出了基于控制参数调整的DFIG风电场单机等效建模流程,为建立具有良好精度的风电场等效模型提供了一种不同于分群聚合的思路。最后,通过仿真算例对所提方法进行了分析和验证。
[Abstract]:In the equivalent modeling of wind farm, the multi-machine equivalent model of wind farm is obtained by cluster aggregation based on the principle of similar operation state of wind turbine. If the wind turbine with obvious difference in operation state can be aggregated under the condition of ensuring the accuracy, it will be helpful to establish a more simplified equivalent model of wind farm. Taking the wind farm based on doubly-fed induction generator (DFIG) as the research object, aiming at the aggregation problem of DFIG unit with significant difference in wind speed, the corresponding aggregation method of rotor side controller for DFIG unit is proposed. This method improves the steady and dynamic accuracy of the equivalent model of wind farm by adjusting the control reference value of the equivalent controller, so as to realize the aggregation of DFIG units with significant wind speed difference. In this paper, the equivalent modeling process of DFIG wind farm based on control parameter adjustment is given, which provides a different idea from cluster aggregation for establishing the equivalent model of wind farm with good accuracy. Finally, the proposed method is analyzed and verified by a simulation example.
【作者单位】：河海大学能源与电气学院;
【基金】：国家高技术研究发展计划(863计划)资助项目(2011AA05A103) 国家自然科学基金重大项目(51190102)~~
【分类号】：TM614;TM346

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