改进电网谐波ip,iq检测算法方法的研究

Modern Electronics Technique(2013)

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Abstract
  目前用于检测电网中电流无功分量和谐波分量的主要方法是ip,iq算法。但此算法必须同时提取谐波分量和无功分量,计算量大,精度和延时性的缺陷也使得谐波治理效果一般。在此改进的ip,iq算法为减少计算量,利用分频检测方法略去三相至两相坐标变换还有其逆变换,提高了检测速度,且避免了原算法在三相四线制系统中会有的零序谐波泄漏误差。仿真结果表明:改进的算法具有较好的动态性能和较高的检测精度。
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Key words
iq algorithm,harmonic detection algorithm,detection accuracy,harmonic in power grid,ip
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