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Direct current power delivery system and method

United States Patent

September 6, 2016
View the Complete Patent at the US Patent & Trademark Office
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.
Zhang; Di (Niskayuna, NY), Garces; Luis Jose (Niskayuna, NY), Dai; Jian (Niskayuna, NY), Lai; Rixin (Clifton Park, NY)
General Electric Company (Niskayuna, NY)
13/ 769,919
February 19, 2013
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH & DEVELOPMENT This invention was made with Government support under sub contract number 08121-2901-01 of prime contract number DE-AC26-07NT42677 awarded by the United States Department of Energy. The Government has certain rights in the invention.