Patents by Inventor Nuwan Dileepa Perera

Nuwan Dileepa Perera 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).

  • POWER SYSTEM FAULT ZONE DETECTION
    Publication number: 20130015878
    Abstract: A system, method, and apparatus for power transmission fault zone detection. Each phase of a three-phase current in the power system is monitored, a modal component is determined from the three-phase current, high frequency transients in the modal component are extracted using wavelet packet transformation, and a travelling wave front is detected in the modal component indicating the fault. A wave sign is determined and the signs of two travelling waves are logically combined to determine whether or not the fault is within a protected zone.
    Type: Application
    Filed: June 19, 2012
    Publication date: January 17, 2013
    Applicant: ERLPhase Power Technologies Limited
    Inventors: Nuwan Dileepa Perera, Krishnaswamy Gururaj Narendra, David James Fedirchuk