Patents by Inventor Andrea Di Tomasso

Andrea Di Tomasso 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).

  • Electric power system differential protection with DC compensation
    Patent number: 11469588
    Abstract: Differential protection of electric power delivery system equipment using a compensated operating signal under spurious conditions is disclosed herein. Current transformers (CTs) may provide spurious current signals under certain operating conditions resulting in unintended operation of differential protection. The present disclosure uses a compensated operating signal during such conditions. The compensated operating signal is calculated using operate current and a difference between direct current content of currents obtained from the CTs. Switching between use of the operate current and the compensated operating signal is based on a comparison of the average direct current content of the CTs and a threshold.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: October 11, 2022
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Marcos A. Donolo, Andrea Di Tomasso, Yusuf Zafer Korkmaz, Jay Hartshorn
  • ELECTRIC POWER SYSTEM DIFFERENTIAL PROTECTION WITH DC COMPENSATION
    Publication number: 20220069566
    Abstract: Differential protection of electric power delivery system equipment using a compensated operating signal under spurious conditions is disclosed herein. Current transformers (CTs) may provide spurious current signals under certain operating conditions resulting in unintended operation of differential protection. The present disclosure uses a compensated operating signal during such conditions. The compensated operating signal is calculated using operate current and a difference between direct current content of currents obtained from the CTs. Switching between use of the operate current and the compensated operating signal is based on a comparison of the average direct current content of the CTs and a threshold.
    Type: Application
    Filed: August 25, 2021
    Publication date: March 3, 2022
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Marcos A. Donolo, Andrea Di Tomasso, Yusuf Zafer Korkmaz, Jay Hartshorn