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多变电网条件下的对称序列与谐波检测

, PP. 158-165

Keywords: 静止坐标系,有源滤波,对称序列,谐波检测,不平衡

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Abstract:

提出了一组用于在各种电网条件下检测基波对称序列和谐波分量的高性能滤波器。该滤波器基本单元可等效为静止坐标系下的带通滤波器,并能够采用多变量结构得以简单实现。为了适用于多变电网条件下,本文进一步提出基于滤波器基本单元的级联式结构应用于畸变不平衡电网,并对频率波动下的鲁棒性进行了分析,针对大范围电网频率波动提出了频率自适应的改进。此外,该滤波器也可被应用于单相系统的同步和基波检测。最后,通过实验结果验证了所提出滤波器的有效性能。

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