直驱风机故障穿越全过程的通用电磁暂态建模方法  

Generic Electromagnetic Transient Modeling Method for Complete Fault Ride-through Processes of Direct-driven Wind Turbine Generators

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

机构地区：[1]哈尔滨工业大学电气工程系,黑龙江省哈尔滨市150001

出　　处：《中国电机工程学报》2022年第4期1428-1442,共15页Proceedings of the CSEE

基　　金：国家重点研发计划项目(2017YFB0902000)。

摘　　要：开发有效的风机电磁暂态模型是进行风电并网研究的基础。然而,风机厂家对其关键策略保密使得风机建模十分困难。为了解决此难题,该文对实际直驱风机进行大量故障穿越测试,利用实测数据解析风机的故障响应特性,提出适用于对称和不对称电压跌落的通用故障穿越响应曲线。然后,推导不同故障阶段下有功和无功功率响应的表达式,包括故障期间的穿越控制过程、故障清除后的恢复控制过程及不同过程间的暂态切换。据此该文设计一个通用的有功和无功电流参考值发生器,形成直驱风机故障穿越全过程的通用电磁暂态建模方法。最后,利用实际风机的测试数据验证所提方法的有效性。Developing effective electromagnetic transient models of wind turbine generators is essential for the studies of grid-integrated wind generation. However, the manufacturers keep their key strategies a secret, which hinders the modeling of wind turbine generators. To address this issue, massive fault ride-through field tests were conducted on direct-driven wind turbine generators, and generic fault ride-through response waveforms for symmetrical and asymmetrical voltage dips were proposed. The expressions of active and reactive power responses were derived to formulate the different fault ride-through stages, including the fault ride-through control process during a fault, post-fault recovery control process, and their switching transients. Further, a generic active and reactive current reference generator was designed, and thus a generic electromagnetic transient modeling method for complete fault ride-through processes of direct-driven wind turbine generators was proposed. Finally, the proposed modeling method was validated by field tests of practical direct-driven wind turbine generators.

关 键 词：直驱风机 动态建模 故障穿越 对称故障 不对称故障 

分 类 号：TM71[电气工程—电力系统及自动化]