Patents by Inventor Patrice Grave

Patrice Grave has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Protection system for protecting a poly-phase distribution transformer insulated in a liquid dielectric, the system including at least one phase disconnector switch
    Patent number: 6839207
    Abstract: The distribution transformer is installed in a station having N phases, at least N-1 phases being equipped on the high-voltage side of the transformer with respective current-limiting fuses capable of blowing in the event of a dead short circuit between the phases. The protection system includes: at least one fault detector for detecting faults on the basis of at least one of the following indicators: pressure in the tank, level of the dielectric, or temperature of the transformer; a short-circuiter acting on all the phases situated upstream from the high-voltage windings, said short-circuiter being capable of being triggered by said fault detector to establish a dead short circuit between the phases; and on at least N-1 phases, a detector for detecting an abnormal current upstream from the transformer, said detector being associated with a controller for controlling said short-circuiter.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: January 4, 2005
    Assignee: Alstom
    Inventors: Philippe Folliot, Stéphane Melquiond, François Hebert, Patrice Grave
  • Protection system for protecting a poly-phase distribution transformer insulated in a liquid dielectric, the system including at least one phase disconnector switch
    Publication number: 20030086218
    Abstract: The distribution transformer is installed in a station having N phases, at least N-1 phases being equipped on the high-voltage side of the transformer with respective current-limiting fuses capable of blowing in the event of a dead short circuit between the phases.
    Type: Application
    Filed: October 21, 2002
    Publication date: May 8, 2003
    Applicant: ALSTOM
    Inventors: Philippe Folliot, Stephane Melquiond, Francois Hebert, Patrice Grave