考虑集输线影响的风电场动态聚类等效

Wenzhe Zheng, J. Bu, Ningyu Zhang, Qian Zhou, Jiankun Liu
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引用次数: 1

摘要

针对风电场动态等效时不考虑集输线影响时精度低的问题,提出了一种相干发电机动态簇等效方法。在分层聚类分析的基础上,考虑了采集线对站点内的影响。首先,以双馈感应发电机(DFIG)的转子电流为特征量,分析了双馈风电场(DFWF)的拓扑结构和集流线路对动态过程的影响。然后,采用分层聚类的方法,对现场DFIGs转子电流的扰动轨迹进行关联,得到动态聚类结果;最后,根据等效功率损耗法,给出了采集网络和DFIGs的等效参数,得到了多机等效模型。仿真结果验证了所提聚类方法的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dynamic Clustering Equivalence of Wind Farms Considering Impacts of Collection Lines
This paper focuses on the problem of low accuracy when wind farms are dynamically equated without considering the impacts of collection lines and proposes a dynamic cluster equivalence method of coherent generators. Based on hierarchical clustering analysis, it considers the intra-site impacts of collection lines. Firstly, it uses the rotor current of the doubly fed induction generator (DFIG) as the characteristic quantity to analyze the influence of the topology in the doubly fed wind farm (DFWF) and the collection lines on the dynamic process. Then, it uses hierarchical clustering method to correlate the disturbed trajectory of rotor current of the intra-site DFIGs and obtains the dynamic clustering results. Finally, according to the equivalent power loss method, the equivalent parameters of the collection network and the DFIGs are given to obtain a multi-machine equivalent model. The proposed clustering method is validated by simulation results.
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