{
  "id": 80942,
  "title": "What are those periodic patterns?",
  "url": "/competitions/vsb-power-line-fault-detection/discussion/80942",
  "author_name": "",
  "post_date": "2019-02-18T04:52:10.222469400Z",
  "votes": null,
  "comment_count": 1,
  "views": 0,
  "content": "<p>Hi. I've checked some data and I found that both 0 and 1 data have some periodic patterns. But I am new for signal data. So what are those patterns? Noise? Or others?</p>\n\n<p>If you know please provide your ideas. Much appreciated.  </p>",
  "messages": [
    {
      "id": "473493",
      "postDate": "02/18/2019 04:52:10",
      "content": "<p>Hi. I've checked some data and I found that both 0 and 1 data have some periodic patterns. But I am new for signal data. So what are those patterns? Noise? Or others?</p>\n\n<p>If you know please provide your ideas. Much appreciated.  </p>",
      "rawMarkdown": "Hi. I've checked some data and I found that both 0 and 1 data have some periodic patterns. But I am new for signal data. So what are those patterns? Noise? Or others?\n\nIf you know please provide your ideas. Much appreciated.",
      "votes": null
    },
    {
      "id": "473901",
      "postDate": "02/18/2019 16:58:06",
      "content": "<p>Corona discharge pulses. In the literature, referred to as RPI, Repetitive pulses interference, or Random pulses interference from power electronics, lightning, switches, corona, etc. Generally, RPI creates false hit peaks in a time domain of a raw signal, which can be misdetected as a PD-pattern.</p>\n\n<p>Read more about it in section 3.2 here: <a href=\"https://sci-hub.tw/10.1109/tdei.2017.006135\">https://sci-hub.tw/10.1109/tdei.2017.006135</a></p>",
      "rawMarkdown": "Corona discharge pulses. In the literature, referred to as RPI, Repetitive pulses interference, or Random pulses interference from power electronics, lightning, switches, corona, etc. Generally, RPI creates false hit peaks in a time domain of a raw signal, which can be misdetected as a PD-pattern.\n\nRead more about it in section 3.2 here: https://sci-hub.tw/10.1109/tdei.2017.006135",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 473901,
      "author_name": "authman",
      "author_url": "",
      "post_date": "02/18/2019 16:58:06",
      "content": "<p>Corona discharge pulses. In the literature, referred to as RPI, Repetitive pulses interference, or Random pulses interference from power electronics, lightning, switches, corona, etc. Generally, RPI creates false hit peaks in a time domain of a raw signal, which can be misdetected as a PD-pattern.</p>\n\n<p>Read more about it in section 3.2 here: <a href=\"https://sci-hub.tw/10.1109/tdei.2017.006135\">https://sci-hub.tw/10.1109/tdei.2017.006135</a></p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "473493": "Hi. I've checked some data and I found that both 0 and 1 data have some periodic patterns. But I am new for signal data. So what are those patterns? Noise? Or others?\n\nIf you know please provide your ideas. Much appreciated.",
    "473901": "Corona discharge pulses. In the literature, referred to as RPI, Repetitive pulses interference, or Random pulses interference from power electronics, lightning, switches, corona, etc. Generally, RPI creates false hit peaks in a time domain of a raw signal, which can be misdetected as a PD-pattern.\n\nRead more about it in section 3.2 here: https://sci-hub.tw/10.1109/tdei.2017.006135"
  },
  "source": "meta"
}