An improved id-iq harmonic current detection algorithm for three-phase voltage asymmetry
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摘要: 由于传统id-iq谐波检测法在电网电压不对称与畸变时锁相环测得相角与电网基波正序电压存在相位差，同时，在传统id-iq谐波检测法中使用的低通滤波器性能会影响算法准确性与实时性，提出了一种改进的id-iq谐波检测算法，即利用对称性较好的基波正序电流代替电网瞬时电压进行锁相，从而消除测得电网相角的相位差，并利用平均值理论实现低通滤波器功能，在降低算法延时的同时提高了算法的实时性和检测精度。Matlab/Simulink仿真结果证实了算法的正确性。Abstract: Due to phase angle measured by phase locked loop has phase difference with grid positive sequence fundamental voltage of traditional id-iq harmonic detection method in grid voltage asymmetry and distortion phase, at the same time, low pass filter performance used in traditional id-iq harmonic detection method will influence accuracy and real-time performance, an improved id-iq harmonic detection algorithm was proposed, namely using of fundamental positive sequence current with good symmetry to instead of instantaneous voltage to lock phase, so as to eliminate measured phase difference of phase angle of power grid, and using of average value theory to replace function of the low pass filter，in order to reduce time delay and improve real-time performance and detection accuracy of the algorithm. The Matlab/Simulink simulation result proves that the algorithm is correctness.
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期刊类型引用(1)
1. 蔺祯德. 基于改进深度置信网络的输煤胶带撕裂检测研究. 能源与环保. 2025(08) 
百度学术
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