Patents by Inventor Lubomir Sevov

Lubomir Sevov 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).

  • Systems and methods for monitoring and diagnosing transformer health
    Patent number: 10782360
    Abstract: Embodiments of the disclosure relate to systems and methods for monitoring and diagnosing transformer health. In one embodiment, a system incorporating a diagnostic apparatus for monitoring a power transformer can be provided. Various electrical current sensing elements and a dissolved gas analysis (DGA) apparatus are coupled to the transformer and to the diagnostic apparatus. The diagnostic apparatus can be configured to detect a through-fault in the transformer by executing an electrical current flow analysis based at least in part on electrical current values received from the electrical current sensing elements. The electrical current flow analysis involves comparing a ratio of a differential electrical current value and a restraining electrical current value to a threshold value. The diagnostic apparatus can also use DGA data provided by the DGA apparatus to detect an abnormal gas-related condition in the transformer.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: September 22, 2020
    Assignee: General Electric Company
    Inventors: Balakrishna Pamulaparthy, Vijayasarathi Muthukrishnan, Lubomir Sevov, Balamourougan Vinayagam
  • SYSTEMS AND METHODS FOR MONITORING AND DIAGNOSING TRANSFORMER HEALTH
    Publication number: 20170115335
    Abstract: Embodiments of the disclosure relate to systems and methods for monitoring and diagnosing transformer health. In one embodiment, a system incorporating a diagnostic apparatus for monitoring a power transformer can be provided. Various electrical current sensing elements and a dissolved gas analysis (DGA) apparatus are coupled to the transformer and to the diagnostic apparatus. The diagnostic apparatus can be configured to detect a through-fault in the transformer by executing an electrical current flow analysis based at least in part on electrical current values received from the electrical current sensing elements. The electrical current flow analysis involves comparing a ratio of a differential electrical current value and a restraining electrical current value to a threshold value. The diagnostic apparatus can also use DGA data provided by the DGA apparatus to detect an abnormal gas-related condition in the transformer.
    Type: Application
    Filed: January 5, 2017
    Publication date: April 27, 2017
    Inventors: Balakrishna Pamulaparthy, Vijayasarathi Muthukrishnan, Lubomir Sevov, Balamourougan Vinayagam