{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "The application relates to a method and system for a pilot directional protection of LCC-HVDC lines based on virtual grounding resistance The method comprises: Obtaining a conduction state information of a converter and characteristic parameters of a converter circuit within one commutation period…",
  "path": "/patents/1353525",
  "publishedAt": "2023-10-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01R31/085",
    "NORTH CHINA ELECTRIC POWER UNIVERSITY"
  ],
  "textContent": "The application relates to a method and system for a pilot directional protection of LCC-HVDC lines based on virtual grounding resistance The method comprises: Obtaining a conduction state information of a converter and characteristic parameters of a converter circuit within one commutation period after a fault occurs; according to the conduction state information and characteristic parameters, determining characteristic frequency of the circuit; according to the characteristic frequency and characteristic parameters, determining a virtual grounding resistance; according to the virtual grounding resistance, determining fault areas.",
  "title": "Method and System for a pilot directional protection of LCC-HVDC lines based on virtual grounding resistance"
}