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基于虚拟仪器的电网信号相位差测量的研究
引用本文:胡文军,李震梅,饶明忠.基于虚拟仪器的电网信号相位差测量的研究[J].山东理工大学学报,2003,17(2):90-93.
作者姓名:胡文军  李震梅  饶明忠
作者单位:山东理工大学电气工程学院,山东淄博255049
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.

关 键 词:电网  相位测量  相位差  虚拟仪器  过零检测法  相关法  互相关  自相关  曲线拟合
文章编号:1007-1857(2003)02-0090-04
修稿时间:2003年2月24日

Research of Phase Difference Measurement for Power System Signals Based on Virtual Instrument
HU Wen jun,LI Zhen mei,RAO Ming zhong.Research of Phase Difference Measurement for Power System Signals Based on Virtual Instrument[J].Journal of Shandong University of Technology:Science and Technology,2003,17(2):90-93.
Authors:HU Wen jun  LI Zhen mei  RAO Ming zhong
Abstract: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.
Keywords:phase difference  virtual instruments  cross  correlation  auto  correlation  curve fitting
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