{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "In a multi-terminal DC power transmission system, a common control device is connected to a plurality of individual protective devices via a first communication network. Each of the individual protective devices is configured, when detecting change in current or voltage in a corresponding…",
  "path": "/patents/1337379",
  "publishedAt": "2023-02-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02H7/268",
    "Mitsubishi Electric Corporation"
  ],
  "textContent": "In a multi-terminal DC power transmission system, a common control device is connected to a plurality of individual protective devices via a first communication network. Each of the individual protective devices is configured, when detecting change in current or voltage in a corresponding protection zone, to output a fault signal to the common control device via the first communication network and open the corresponding DC circuit breaker such that the corresponding protection zone is disconnected from the multi-terminal DC power grid and deenergized. The common control device estimates a fault occurrence zone where a fault occurs among a plurality of protection zones, based on a plurality of received fault signals. The common control device requests an individual protective device corresponding to a deenergized protection zone of the protection zones excluding the fault occurrence zone to reclose the DC circuit breaker such that the deenergized protection zone is restored.",
  "title": "MULTI-TERMINAL DC POWER TRANSMISSION SYSTEM, COMMON CONTROL DEVICE THEREOF, AND FAULT RECOVERY METHOD FOR MULTI-TERMINAL DC POWER TRANSMISSION SYSTEM"
}