电器与能效管理技术 ›› 2021, Vol. 0 ›› Issue (6): 67-72.doi: 10.16628/j.cnki.2095-8188.2021.06.012

• 检测与试验 • 上一篇    下一篇

基于DSP的电网频率检测方法的比较分析

吴卫东1, 黄芳1, 王国忠1, 曹叶峰2, 潘丽杰2, 赵飞2   

  1. 1.浙江方圆电气设备检测有限公司, 浙江 嘉兴 314000
    2.浙江清华长三角研究院, 浙江 嘉兴 314000
  • 收稿日期:2021-01-28 出版日期:2021-06-30 发布日期:2021-10-13
  • 作者简介:吴卫东(1966—),男,高级工程师,主要从事高低压电器检测技术和检测方法的研究。|黄 芳(1973—),女,高级工程师,主要从事低压成套电器检测技术和检测方法的研究。|王国忠(1964—),男,高级工程师,主要从事低压元件电器检测技术和检测方法的研究。

Comparison and Analysis of Power Frequency Detecting Methods Based on DSP

WU Weidong1, HUANG Fang1, WANG Guozhong1, CAO Yefeng2, PAN Lijie2, ZHAO Fei2   

  1. 1. Zhejiang Fang Yuan Electric Equipment Test Co.,Ltd.,Jiaxing 314000,China
    2. Yangtze Delta Region Institute of Tsinghua University,Jiaxing 314000,China
  • Received:2021-01-28 Online:2021-06-30 Published:2021-10-13

摘要:

对比分析了软件过零点检测、硬件过零点检测和FFT频率检测,选用软件过零点检测方式进行DSP选相合闸控制设计。所设计的控制系统具有高速的数据采集分析能力,在电源电压变化到指定的角度时导通电路,实现精准选相控制。

关键词: 电网频率检测, DSP, 过零点, FFT

Abstract:

The control system with high-speed data acquisition and analysis is designed in this paper.When the voltage of power changes to the specified angle,the circuit is turned on to realize precise phase selection control.Because frequency detection of voltage is an important step of precise control,this paper chooses three methods to carry out the experiment:software zero-crossing detection,hardware zero-crossing detection and FFT frequency detection.Compared with the experimental data,the software zero crossing detection method is selected as the voltage frequency acquisition method.

Key words: power frequency detection, DSP, zero-crossing, FFT

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