风电场次同步振荡等值建模方法研究
摘要：风电场中风机数量大并且处于不同的运行风速，建立包含每台风机详细的次同步振荡研究模型非常复杂，而且应用该模型进行次同步振荡研究计算耗时长。因此，需要建立保留风电场与接入系统相互作用的次同步振荡特性的风电场等值模型，简化次同步振荡研究的复杂程度。计及风机不同运行风速区间的不同控制策略对次同步振荡模式的影响，采用基于风速指标K-means算法聚类风机，考虑各台风电机组出线端的电流幅值和相位不同的影响，提出基于功率等值的集电系统简化建模方法，在PSCAD/EMTDC中搭建相关风电场仿真模型，并对等值前后次同步振荡模态进行了对比，用以验证该等值方法的合理性。
Abstract:The number of turbines in the actual wind farm is large and at different operating wind speeds. It is very complicated to build a sub-synchronous oscillation study model that includes a detailed model of each turbine. Furthermore, it is time-consuming and computationally intensive to apply the model to the sub-synchronous oscillation study. Therefore, it is necessary to simplify the complexity of the sub-synchronous oscillation study by establishing a wind farm equivalent model that retains the sub-synchronous oscillation characteristics of the interaction between the wind farm and the interconnected system. In this paper, the effect of different control strategies on the sub-synchronous oscillation model in different operating wind speed intervals of wind turbines was taken into account, and the wind turbines were clustered using the K-means algorithm based on wind speed indexes. Considering the effects of different current amplitude and phase at the terminal of each wind turbine, a simplified modeling method of the collector system based on power equivalence was proposed. And the relevant wind farm simulation model was built in PSCAD/EMTDC, and the sub-synchronous oscillation modes before and after the equivalence were used to verify the rationality of this equivalence method.
标题：风电场次同步振荡等值建模方法研究
title:Equivalent Modeling Method of Sub-synchronous Oscillation in Wind Farm
作者：康佳乐, 余浩, 段瑶, 陈武晖, 王丹辉
authors:Jiale KANG, Hao YU, Yao DUAN, Wuhui CHEN, Danhui WANG
关键词：风电场,集电系统,次同步振荡,功率等值,
keywords:wind farm,collector system,sub-synchronous oscillation,power equivalence,
发表日期：2022-12-31
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