摘要
介绍了对电网信号相位差测量的过零检测法 ,提出了一种新的测量方法———相关法 ,最后利用虚拟仪器对这两种方法进行了仿真 .通过仿真表明 ,当电网信号受到较大干扰或谐波含量较大时 ,相关法的测量精度比过零检测法高 .
This paper introduces zero crossing method for measuring phase difference of power system signal and presents a new method, correlation method. The simulation of two methods is implemented by using virtual instrument. The results of simulation demonstrate that the precision of correlation method is higher than that of zero crossing method when power system is jammed or has lots of harmonics.
出处
《山东理工大学学报（自然科学版）》
CAS
2003年第2期90-93,共4页
Journal of Shandong University of Technology:Natural Science Edition
