| 引用本文: | 薛安成,耿继瑜,刘瑞煌,赵成爽,王清,毕天姝.限幅环节对DFIG故障中输出特性的影响研究[J].电力自动化设备,2017,37(10): |
| XUE Ancheng,GENG Jiyu,LIU Ruihuang,ZHAO Chengshuang,WANG Qing,BI Tianshu.Impact of limiter on output characteristics of DFIG during fault[J].Electric Power Automation Equipment,2017,37(10): |
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| 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。 |
| 关键词: 风电 有功功率限幅 转子电流限幅 故障稳态特性 故障分析 |
| DOI：10.16081/j.issn.1006-6047.2017.10.005 |
| 分类号:TM614 |
| 基金项目: |
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| Impact of limiter on output characteristics of DFIG during fault |
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XUE Ancheng1, GENG Jiyu1,2, LIU Ruihuang1,3, ZHAO Chengshuang1, WANG Qing4, BI Tianshu1
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1.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China;2.State Grid Songjiang Power Supply Company of Shanghai Municipal Electric Power Company, Shanghai 201600, China;3.State Grid Jiangsu Electric Power Research Institute, Nanjing 211100, China;4.State Grid Suzhou Power Supply Company of Jiangsu Electric Power Company, Suzhou 215000, China
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| Abstract: |
| The impact of the limiter on the output characteristic of DFIG(Doubly-Fed Induction Generator) during three-phase symmetrical faults with different severity is researched. The relationship between the steady-state active power output and steady-state voltage of DFIG during different faults without triggering the action of Crowbar is obtained by simulations. The mathematical models for the active power limit and the rotor current limit in DFIG power control module are respectively presented, and the impacts of the amplitude limiters on the Crowbar action and the characteristics of active and reactive power outputs during fault are analyzed by simulations. The comparison between theoretical and simulative results shows that the characteristics of steady-state active power output during fault is determined by the active power limit, the rotor current limit and the rated active power output limit, and the output power is determined by different limiters under faults with different severities. |
| Key words: wind power active power limit rotor current limit steady-state characteristics during fault failure analysis |
