一种改进的任意次谐波电流检测方法  

An Improved Method for Detecting Random Integer Order Harmonic Current

作　　者：徐金富[1] 张振环[1] 王建勋[1] 刘会金[1] 郭清滔[2] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072 [2]福建省电力试验研究院,福建福州350007

出　　处：《电力电容器与无功补偿》2008年第4期11-14,46,共5页Power Capacitor & Reactive Power Compensation

摘　　要：以d-q变换原理为理论基础,在现有的比较成熟的任意次谐波电流(电压)检测方法上,提出了一种改进的考虑时滞补偿的任意次谐波电流(电压)检测方法。该方法通过在检测环节中加入预测补偿角,补偿了因检测环节(传感器、滤波器、采样电路及A/D转换等环节)所导致的时滞效应,同时,考虑了频率偏移对此方法检测效果的影响。通过仿真实验和理论分析验证了新算法的优点。Based on d-q coordinate transformation and the existing and prevalent real-time detection method of random integer-order harmonic current （voltage） , an improved real-time detection meth- od is proposed, in which the effect of the time-delay is considered. By way of adding predicated compensation angle into detecting link, the time-delay brought by detecting link （sensor, filter, sample circuit and A/D convert ） is compensated. And also the effect on the frequency deviation to this detection method is considered. Simulation results validate the correctness and effectiveness of the proposed method.

关 键 词：时滞补偿 有源电力滤波器 D-Q变换 任意次谐波电流 

分 类 号：TM76[电气工程—电力系统及自动化]