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电网技术  2015 

适用于电力系统全过程动态仿真的风电机组典型模型

DOI: 10.13335/j.1000-3673.pst.2015.03.004, PP. 609-614

Keywords: 机电暂态特性,中长期动态仿真,换流器控制,低电压穿越控制策略,风速波动模型,有功控制模型

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Abstract:

风电的随机波动性给电网的规划运行带来了不利的影响。针对目前国内在风电仿真分析时使用的模型所存在的问题,包括机电暂态特性仿真不够准确且缺乏中长期动态仿真等,建立了适用于电力系统全过程动态仿真的典型风电机组模型。该模型包括反映风电机电暂态特性的发电机和换流器控制模型、低电压穿越控制策略和保护模型,以及反映风电中长期动态特性的风速波动和有功控制模型。该模型能够对风电机组机电暂态特性,特别是低电压穿越过程的运行特性进行准确地仿真;通过设置风速波动输入,能够较准确地模拟风电机组出力的长时间变化过程及其对电网造成的影响。通过与大电网实测数据的仿真对比,验证了风电机组模型在机电暂态和中长期动态仿真中的有效性。

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