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实现动态相量测量的FIR数字滤波器最优设计

DOI: 10.13334/j.0258-8013.pcsee.2014.15.008, PP. 2388-2395

Keywords: 同步相量测量,动态相量,FIR滤波器,陷波器,最小二乘法

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Abstract:

为实现动态和暂态条件下同步相量的精确测量,提出基于一组线性相位有限冲激响应数字滤波的动态相量测量算法,系统阐述了算法的理论基础和设计方法。动态相量表示成一组基函数的加权和,由基函数优化选取和权重最小二乘估计实现测量滤波器的最优设计。通过将干扰分量加入优化目标产生陷波效果,实现对任意指定频率的谐波和间谐波,以及故障条件下衰减直流分量的有效抑制。测量滤波器的频响分析和相量测量的误差检验结果表明算法具有很高精度和良好适应性,特别适合于工程应用。

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