{
  "$type": "site.standard.document",
  "description": "The present disclosure provides a method for controlling the receiving-end alternating-current (ac) fault ride-through of the hybrid cascaded high-voltage direct-current (hvdc) transmission system. According to the method, a line commutated converter (lcc) on the rectifier side determines the…",
  "path": "/patents/1372362",
  "publishedAt": "2025-01-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J3/001",
    "ZHEJIANG UNIVERSITY"
  ],
  "textContent": "The present disclosure provides a method for controlling the receiving-end alternating-current (ac) fault ride-through of the hybrid cascaded high-voltage direct-current (hvdc) transmission system. According to the method, a line commutated converter (lcc) on the rectifier side determines the occurrence of a receiving-end ac fault based on a change in an electrical quantity of its dc port, and quickly reduces the dc voltage on the rectifier side by increasing the firing angle, so as to quickly suppress an overcurrent. The mmcs on the inverter side, which use the constant active power control, correct the outer-loop active power reference values to transmit as much active power as possible, thereby reducing the surplus power of the receiving-end system and suppressing an overvoltage for submodule capacitors of the mmcs.",
  "title": "METHOD FOR CONTROLLING RECEIVING-END ALTERNATING CURRENT (AC) FAULT RIDE-THROUGH OF HYBRID CASCADED HIGH-VOLTAGE DIRECT-CURRENT (HVDC) TRANSMISSION SYSTEM"
}