{
  "$type": "site.standard.document",
  "description": "The invention describes a power supply arrangement (5) realised to provide auxiliary power to a wind farm (1) that feeds into a HVDC transmission link (3), which power supply arrangement (5) comprises an auxiliary power supply (50) realised to deliver auxiliary power (P aux ) to the wind farm (1)…",
  "path": "/patents/948966",
  "publishedAt": "2015-09-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F03D7/00",
    "SIEMENS AG [DE]"
  ],
  "textContent": "The invention describes a power supply arrangement (5) realised to provide auxiliary power to a wind farm (1) that feeds into a HVDC transmission link (3), which power supply arrangement (5) comprises an auxiliary power supply (50) realised to deliver auxiliary power (P aux ) to the wind farm (1); a backfeed control means (6, 41) for initiating provision of a backfeed voltage on the HVDC link (3) during a wind farm downtime; a backfeed switch (53) realised to close a DC current path between the HVDC link (3) and the auxiliary power supply (50); and a power conversion means (54, 51, T5) for converting the backfeed voltage into auxiliary power (P aux ). The invention also describes a wind farm (1) arranged to feed into a HVDC transmission link (3), comprising such a power supply arrangement (5) for providing auxiliary power (P aux ) to the wind farm (1) during a wind farm downtime. The invention also describes a method of providing auxiliary power (P backfeed ) to a wind farm (1) during a wind farm downtime.",
  "title": "Power supply arrangement of a wind farm"
}