{
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  "description": "An islanding detection method includes: continuously detecting a voltage frequency at a point of common coupling; calculating, according to the voltage frequency, a frequency deviation of the voltage frequency between two adjacent detections; obtaining, when the frequency deviation is less than a…",
  "path": "/patents/1379504",
  "publishedAt": "2026-03-12T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J13/12",
    "ECOFLOW INC."
  ],
  "textContent": "An islanding detection method includes: continuously detecting a voltage frequency at a point of common coupling; calculating, according to the voltage frequency, a frequency deviation of the voltage frequency between two adjacent detections; obtaining, when the frequency deviation is less than a preset frequency threshold, a voltage phase in a preset closed-loop phase-locking manner; obtaining, when the frequency deviation is greater than or equal to the preset frequency threshold, the voltage phase in a preset open-loop phase-locking manner; determining, according to the frequency deviation, the voltage frequency, and the voltage phase, a reference current for injecting a frequency perturbation; controlling, according to the reference current, the grid-connected inverter to output a current to the point of common coupling; and determining, when the voltage frequency exceeds a preset range, that an islanding effect occurs.",
  "title": "ISLANDING DETECTION METHOD AND APPARATUS, GRID-CONNECTED INVERTER, AND COMPUTER-READABLE STORAGE MEDIUM"
}