针对预想故障的风电集群电磁暂态等值建模方法

Electromagnetic Transient Equivalent Modeling Method for Wind Power Clusters Adapted to Expected Faults

基于现有针对单个风电场的等值建模方法,提出一种适用于风电集群的等值建模方法,利用CloudPSS-XStudio套件完成了风电集群等值建模系统开发,该系统将预想故障选择、等值参数计算和结果分析进行了集成,为含大规模风电集群的电力系统的动态安全分析提供了支撑。以各风电场平均风速以及预想故障作为输入,基于等值模型的迭代仿真得到各个风电机组的分群指标,并完成对风电集群的分群等值建模。以某实际风电集群拓扑接入IEEE 39节点系统作为测试算例,验证了所提方法的正确性。

Based on an existing equivalent modeling method for individual wind farm,an iterative simulation-based equivalent modeling method for wind power clusters is proposed and a software development for equivalent modeling of wind power clusters is completed by using CloudPSS-XStudio suite.The system integrates expected fault selection,equivalent parameter calculation and result analysis,which provides support for dynamic security assessment of power systems with large-scale wind power clusters.The equivalent method takes the average wind speed of each wind farm and the expected faults as input,and obtains the cluster index of each wind turbine based on the iterative simulation of the equivalent model.Moreover,the clustering equivalent model is formed based on the cluster index.The correctness of the method is verified based on the example of IEEE 39-node system integrated with a wind power cluster.