ip-iq谐波检测法的仿真及实验研究ip-iq谐波检测法的仿真及实验研究.pdf

ip-iq谐波检测法的仿真及实验研究 赵梦莹1，李文娟2 哈尔滨理工大学电气与电子工程学院，哈尔滨 150080 1) Email: mengying0815@163.com 2) Email：lwenjuan@163.com 摘要：针对电网净化过程中的谐波检测问题，本文阐述了基于瞬时无功功率理论的ip-iq谐波检测法的原理，建立了该方法的 仿真模型，设计了电流信号调理电路和锁相环及倍频电路等硬件电路，搭建了相应的实验系统。对ip-iq检测法进行了仿真和 实验研究。仿真及实验结果均表明ip-iq谐波检测法可以在一个周期内实时准确的完成谐波的检测，为有源电力滤波器的设计 提供了理论和实验依据。 关键词：瞬时无功功率理论，ip-iq，谐波 Simulation and Experiment Study on ip-iq Harmonic Detection Method Abstract To the question of harmonic detecting in power system, the principle of ip-iq harmonic detection method based on instantaneous reactive power theory is present. Simulation model of the method is built. Current signal conditioning circuit as well as PLL along with frequency multiplier circuit are designed, experiment system is set up.Simulation and experiment research are done on ip-iq harmonic detection method .Simulation and experiment results show that ip-iq harmonic diction method can accurately accomplish the harmonic detection in one cycle. This can afford the theoretical and experimental proof for studing active power filter. Keywords instantaneous reactive power theory, ip-iq, harmonic 1．引言 提出以来，首先在谐波和无功电流实时检测方面得到 [5] 随着现代工业和科学技术的发展，电力电子装置 了成功应用 。以该理论为基础，计算ip、iq为出发点 被广泛应用，在为人类创造物质文明的同时也导致大 可以得出三相电路谐波电流检测方法，称之为ip-iq检 量谐波注入电网??使电网电压和电流波形发生畸变， 测法。根据瞬时无功功率理论可推导出瞬时有功电流 [1] 电能质量日益下降 。使用无源滤波装置来解决无功 ip和瞬时无功电流iq的表达式为 和谐波问题是一种传统的解决方案，但存在许多缺点，