摘要
由于C32变换要求三相电流之和为零,p-q谐波检测法一般直接用于三相三线制电路。当p-q法用于三相四线制电路中时,一般的做法是先减去电流中的零序谐波分量。本文提出可以在三相四线制电路中直接用p-q法检测系统的谐波分量,包含零序分量。仿真实验也验证了这种方法是可行的。
Harmonic detection using p-q theory is usually applied to three-ph ase three-wire circuit directly for the simple reason that the C32 transformati on requires that the sum of three-phase current equals to zero. The zero sequen ce harmonic component is commonly subtracted from the current before p-q theory is applied to three-phase four-wire circuit. A method is brought forward in t his paper to detect harmonic and zero sequence component using p-q theory direc tly. The simulation demonstrates the feasibility of it.
出处
《山东电力技术》
2005年第3期50-52,共3页
Shandong Electric Power
关键词
p-q法
谐波检测
三相四线制
p-q theory
harmonic detection
three-phase four-wire system
