Direct current power delivery system and method

摘要

A power transmission system includes a first unit for carrying out the steps of receiving high voltage direct current (HVDC) power from an HVDC power line, 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 for carrying out the steps of generating a direct current (DC) voltage to transfer the HVDC power on the HVDC power line, 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 based on the added AC component.

主权项

1. A power transmission system comprising:
a first unit for carrying out the steps of:
receiving high voltage direct current (HVDC) power from an HVDC power line;generating an alternating current (AC) component indicative of a status of the first unit;adding the AC component to the HVDC power line; a second unit for carrying out the steps of:
generating a direct current (DC) voltage to transfer the HVDC power on the HVDC power line, wherein the HVDC power line is coupled between the first unit and the second unit;generate a compensatory AC component to eliminate the added AC component in the HVDC power line; anddetermine the status of the first unit based on the generated compensatory AC component.