Patents Assigned to Yong-Gyun Kim
  • Compensated current differential relaying method and system for protecting transformer
    Patent number: 7340355
    Abstract: Disclosed is a compensated current differential relaying method and system for protecting a transformer more correctly by calculating and estimating an exciting current including a core-loss current and a magnetizing current, and, in particular, to a compensated current differential relaying method and system which can protect the transformer correctly irrespective of the level of remanent flux.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: March 4, 2008
    Assignee: Yong-Gyun Kim
    Inventors: Yong-Cheol Kang, Sang-Hee Kang