| 摘要 |
A power transmission system includes a first unit 102 for carrying out the steps of receiving high voltage direct current (HVDC) power from an HVDC power line 106, generating an alternating current (AC) component indicative of a status of the first unit, and adding the AC component to the HVDC power line. Further, the power transmission system includes a second unit 104 for carrying out the steps of generating a direct current (DC) voltage to transfer the HVDC power on the HVDC power line 106, wherein the HVDC power line is coupled between the first unit and the second unit, detecting a presence or an absence of the added AC component in the HVDC power line, and determining the status of the first unit 102 based on the added AC component. |
