三相四线制系统任意次谐波电流的检测新方法  

A NEW ALGORITHM FOR RANDOM HARMONIC CURRENT DETECTION IN THREE PHASE FOUR WIRE SYSTEM

作　　者：杨柳[1] 刘会金[1] 陈允平[1] 

机构地区：[1]武汉大学电气工程学院,湖北省武汉市430072

出　　处：《中国电机工程学报》2005年第13期41-44,共4页Proceedings of the CSEE

摘　　要：提出了一种适用于三相四线制系统的任意次谐波电流检测方法,以d-q坐标变换原理为理论基础,将坐标旋转角速度和旋转方向做适当修改能分别检测出不平衡系统任意次谐波电流的正序和负序分量,再将坐标旋转变换所得的0轴分量进行一定的三角变换得到任意次谐波电流的零序分量。最后将检测到的正、负、零序分量相加得需检测的任意次谐波电流,理论分析和仿真结果证明了该方法的正确性。A new detection algorithm for random harmonic current basing on d-q rotating coordination transformation principle in three phase four wire system is presented in this paper. This new algorithm can detect positive and negative- phase-sequnce component of random harmonic current respectively by proper modifying rotating angular velocity and rotating direction, and can detect the zero-phase-sequnce current component by certain triangle conversion of 0 axes component after d-q rotating coordination. Finally, the detected positive, negative, and zero-phase-sequnce can be summed up to obtain the random harmonic current.Analyses and simulation prove the correctness of the algorithm .

关 键 词：电力电子 三相四线制 任意次谐波电流检测 d-q 坐标变换 

分 类 号：TM761[电气工程—电力系统及自动化]