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电网技术  2012 

含大规模风电场的电力系统小扰动稳定性研究

, PP. 61-69

Keywords: 风电场,双馈异步发电机,小扰动稳定,联络紧密程度,接线方式

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Abstract:

重点研究了由双馈机组构成的风电场在并网运行时影响系统小扰动稳定性的一些因素,目的是寻求解释大规模双馈风机在故障中造成脱网运行的内在原因,并寻求应对策略。建立了双馈机组的电路模型、变频器模型、轴系模型及桨距角模型等;深入讨论了风电场与大电网联络紧密程度、风电场出力、风电场连接方式对系统小扰动稳定性的影响。研究发现,风电场与系统联络越弱,系统的小扰动稳定性越差;而风电场内部风电机组的连接方式也直接影响其小扰动稳定性。

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