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传动链模型对风机低电压穿越能力的影响
引用本文:赵吴鹏,王彪.传动链模型对风机低电压穿越能力的影响[J].节能技术,2012,30(4):335-338,352.
作者姓名:赵吴鹏  王彪
作者单位:安庆市供电公司,安徽安庆,246000
摘    要:电网电压跌落故障时风电机组应能保持与电网连接并向系统不间断供电,根据风电机组在暂态过程中的表现提出低电压穿越(LVRT)要求。考虑传动轴扭转柔性因素,应用等效质量法,建立了变速恒频风电系统传动链的一质量块等效模型和二质量块等效模型。当发生电网电压跌落故障时,对采用不同传动链模型的风电系统进行仿真比较及理论分析。

关 键 词:交流励磁  变速恒频  风力发电  低电压穿越  传动链

Drive-train Model for Wind Turbine LVRT Capability Influence
ZHAO Wu-peng , WANG Biao.Drive-train Model for Wind Turbine LVRT Capability Influence[J].Energy Conservation Technology,2012,30(4):335-338,352.
Authors:ZHAO Wu-peng  WANG Biao
Affiliation:(Anqing power supply company,Anqing 246000,China)
Abstract:With the rapid increase of wind power generation capacity,its influence on grid is becoming more and more remarkable.The DFIG should be connected with grid and supply continual power to system when grid fault occurs.The performances of wind turbines in transient process are concerned,and the LVRT is proposed.Considering the factor of the drive train shaft tensional flexibility between the wind turbine and the generator,a two-mass and a one-mass wind turbine drive-train equivalent model are presented by using equivalent.The wind generators under a grid voltage drop are investigated and compared by using different drive-train model,the effects are analyzed.
Keywords:AC-excited  VSCF  wind power generation  LVRT  drive-train
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