限幅环节对DFIG故障中输出特性的影响研究

发布时间：2018-03-24 13:17

本文选题：风电　切入点：有功功率限幅　出处：《电力自动化设备》2017年10期

【摘要】：研究了不同严重程度的三相对称故障下,限幅环节对双馈感应电机(DFIG)输出特性的影响。仿真获得不触发Crowbar动作的不同故障下,DFIG故障中稳态有功输出与稳态电压的关系;给出DFIG功率控制模块中有功功率限幅和转子电流限幅的数学模型,仿真分析了限幅环节对故障期间Crowbar动作次数、暂态有功及无功输出特性的影响。通过理论推导结果与仿真的对比,表明了故障中稳态有功输出特性由有功限幅、转子电流限幅及额定有功输出限制决定,且在严重程度不同的故障下,DFIG故障中功率输出由不同限幅环节决定。
[Abstract]:In this paper, the effect of limiting on the output characteristics of doubly-fed induction motor (DFIGG) with different severity of three-phase symmetric faults is studied. The relation between steady-state active power output and steady-state voltage in different faults without triggering Crowbar action is obtained by simulation. The mathematical models of active power limiting and rotor current limiting in DFIG power control module are given, and the number of Crowbar actions during the fault period of the limiting link is simulated and analyzed. The comparison between the theoretical results and the simulation results shows that the steady-state active power output in the fault is determined by the active power limit, the rotor current limit and the rated active power output limitation. The power output of DFIG fault is determined by different limiting links.
【作者单位】：华北电力大学新能源电力系统国家重点实验室;国网上海市电力公司松江供电公司;国网江苏省电力公司电力科学研究院;国网江苏省电力公司苏州供电公司;
【基金】：国家重点研发计划(2017YFB0902004) 国家自然科学基金资助项目(51477050,51190103)~~
【分类号】：TM315

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