文献知网节
  • 记笔记
摘要:To distinguish the short circuit fault overcurrent and the asynchronous motor starting overcurrent in power supply system protection, this paper described a phase-sensitive detection protector based on signal-input-capture function of the timer in STM32 chip. Through many theories, experiments and analyses, the range of the power factor used for discriminant of asynchronous motor starting was set to 0.40.5 in protector. The protector used the power factor as a discrimination criterion. The voltage and current sinusoidal signals were transformed to recognizable signals by the hardware, which were input to the timer and then the relevant data were gotten. At last, the data were dealt by the system task in software, gotten was the power factor of system voltage and current, which was afterwards compared with the set value to distinguish the two kinds of overcurrent. By testing, the protector measured the power factors of system accurately, which met the protection requirements.
会议名称:

2017 13th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)

会议时间:

2017-10-20

会议地点:

中国江苏扬州

  • 专辑:

    工程科技Ⅱ辑

  • 专题:

    电力工业

  • 分类号:

    TM564

  • 手机阅读
    即刻使用手机阅读
    第一步

    扫描二维码下载

    "移动知网-全球学术快报"客户端

    第二步

    打开“全球学术快报”

    点击首页左上角的扫描图标

    第三步

    扫描二维码

    手机同步阅读本篇文献

  • CAJ下载
  • PDF下载

下载手机APP用APP扫此码同步阅读该篇文章

下载:17 页码:319-324 页数:6 大小:406k

相关推荐
  • 相似文献
  • 读者推荐
  • 相关基金文献
  • 关联作者
  • 相关视频