Patents by Inventor Pradeep Kumar Gangadharan

Pradeep Kumar Gangadharan 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).

  • Current differential protection relays
    Patent number: 7906970
    Abstract: In the field of current differential protection relays there is a need for improvements in or relating to the protection relays to allow them to accommodate current transformer saturation while maintaining a desired degree of reliability. A method of operating a current differential protection relay following a fault, the protection relay being electrically coupled to a protection zone of an electrical power system, comprises the steps of establishing a fault condition by discriminating between an internal fault inside the protection zone and an external fault outside the protection zone; and modifying the sensitivity of the protection relay according to the nature of the fault condition.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: March 15, 2011
    Assignee: Areva T&D UK Limited
    Inventors: Pradeep Kumar Gangadharan, Tarlochan Singh Sidhu
  • Current Differential Protection Relays
    Publication number: 20090009181
    Abstract: In the field of current differential protection relays there is a need for improvements in or relating to the protection relays to allow them to accommodate current transformer saturation while maintaining a desired degree of reliability. A method of operating a current differential protection relay following a fault, the protection relay being electrically coupled to a protection zone of an electrical power system, comprises the steps of establishing a fault condition by discriminating between an internal fault inside the protection zone and an external fault outside the protection zone; and modifying the sensitivity of the protection relay according to the nature of the fault condition.
    Type: Application
    Filed: July 3, 2008
    Publication date: January 8, 2009
    Applicant: AREVA T&D UK LIMITED
    Inventors: Pradeep Kumar Gangadharan, Tarlochan Singh Sidhu