{
  "$type": "site.standard.document",
  "description": "An islanding detection method and apparatus, and a computer-readable storage medium. The detection method includes: determining a harmonic amplitude growth rate and a frequency growth rate of alternating current electricity output by an alternating current port of a grid-tied inverter (301)…",
  "path": "/patents/1415059",
  "publishedAt": "2023-03-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R31/088",
    "HUAWEI DIGITAL POWER TECH CO LTD [CN]"
  ],
  "textContent": "An islanding detection method and apparatus, and a computer-readable storage medium. The detection method includes: determining a harmonic amplitude growth rate and a frequency growth rate of alternating current electricity output by an alternating current port of a grid-tied inverter (301); determining an islanding disturbance coefficient corresponding to the harmonic amplitude growth rate (302), where the harmonic amplitude growth rate and the islanding disturbance coefficient are in a monotonically increasing relationship; determining an islanding injection amount based on the frequency growth rate and the islanding disturbance coefficient corresponding to the harmonic amplitude growth rate (303); controlling, based on the islanding injection amount, the grid-tied inverter to output a reactive power or a reactive current over the alternating current port (304); and performing islanding detection based on a frequency of the alternating current electricity output by the alternating current port (305). With this detection method, whether islanding occurs can be accurately detected. When islanding does not occur, disturbance to a power grid is reduced, and grid connection stability is improved. When islanding occurs, it can be quickly detected, and a detection time is relatively short.",
  "title": "ISLANDING DETECTION METHOD, DEVICE, AND COMPUTER READABLE STORAGE MEDIUM"
}