直驱风电场实用化等值方法  

Practical equivalent method for direct-driven wind farm

作　　者：齐金玲 李卫星[1] 晁璞璞 李志民[1] QI Jinling;LI Weixing;CHAO Pupu;LI Zhimin(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001

出　　处：《电力自动化设备》2022年第12期50-57,共8页Electric Power Automation Equipment

基　　金：国家重点研发计划项目(2017YFB0902000)。

摘　　要：建立能够准确模拟风电场暂态响应的等值模型是进行大规模风电并网研究的基础。利用从实测数据中提取出的低电压穿越响应曲线,对直驱风电机组的故障响应特性进行详细解析。然后,对风电机组在不同风速下的有功暂态响应进行研究,依据响应的差异性,初步确定机群划分原则。随后,进行多组电压跌落实验,从实用化的角度出发,兼顾等值精度和计算效率,探讨并确定合适的分割点,提出了计及低电压穿越全过程暂态响应的直驱风电场三机等值方法。最后,通过多组实测风速数据,验证了所提等值方法对不同风速场景和不同电压跌落状况的适应性。所提方法仅需通过简单的计算即可获得分群指标,避免对聚类算法的依赖,工程实用性好。Establishing an equivalent model that can accurately simulate the transient response of wind farm is essential for the studies of large-scale grid-integrated wind power.The fault response characteristics of direct-driven wind turbine generators are analyzed in detail by using the low voltage ride-through response curve extracted from the field test data.Then,the active power transient response of wind turbine generator under different wind speeds is studied.According to the difference of response,the clustering principle is preliminarily determined.Then,several groups of voltage dip tests are carried out.From the perspective of practicality,considering the equivalence accuracy and calculation efficiency,the appropriate segmentation points are discussed and determined.Thus,a three-machine equivalent method of direct-driven wind farm considering the transient response of the complete process of low voltage ride-through is proposed.Finally,the adaptability of the proposed equivalent method to different wind speeds and voltage dips is verified with multiple groups of measured wind speed data.The proposed method only needs a simple calculation to obtain the grouping indicator,avoiding the dependence on clustering algorithm,and has good engineering practicability.

关 键 词：直驱风电场 动态等值模型 低电压穿越 分群 

分 类 号：TM614[电气工程—电力系统及自动化]