Patents by Inventor Byung Heon HWANG

Byung Heon HWANG 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).

  • System of controlling steam generator level during main feed-water control valve transfer for nuclear power plant
    Patent number: 8811560
    Abstract: A system and a method of transforming a gain and an integral time constant of a proportional-integral (PI) controller according to a timer lapse time to relieve an excessive phenomenon of a steam generator level caused by rapid changes in open degrees of a downcomer feed-water valve and an economizer feed-water valve when reactor power transfers between low and high power sections. Accordingly, an excessive phenomenon of a steam generator level is relieved at a transfer time when reactor power transfers between low and high power sections. Therefore, a possibility of a stop of a reactor caused by the excessive phenomenon of the steam generator level is reduced to relieve burden on an operator and improve an operation rate and economic feasibility of a nuclear power plant.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: August 19, 2014
    Assignee: Kepco Engineering & Construction Company
    Inventors: Myung Jun Song, Jong Joo Sohn, In Ho Song, Ju Han Lee, Byung Heon Hwang, Eun Kee Kim, Ung Soo Kim
  • SYSTEM OF CONTROLLING STEAM GENERATOR LEVEL DURING MAIN FEED-WATER CONTROL VALVE TRANSFER FOR NUCLEAR POWER PLANT
    Publication number: 20120170702
    Abstract: A system and a method of transforming a gain and an integral time constant of a proportional-integral (PI) controller according to a timer lapse time to relieve an excessive phenomenon of a steam generator level caused by rapid changes in open degrees of a downcomer feed-water valve and an economizer feed-water valve when reactor power transfers between low and high power sections. Accordingly, an excessive phenomenon of a steam generator level is relieved at a transfer time when reactor power transfers between low and high power sections. Therefore, a possibility of a stop of a reactor caused by the excessive phenomenon of the steam generator level is reduced to relieve burden on an operator and improve an operation rate and economic feasibility of a nuclear power plant.
    Type: Application
    Filed: December 30, 2010
    Publication date: July 5, 2012
    Applicant: KEPCO ENGINEERING & CONSTRUCTION COMPANY
    Inventors: Myung Jun SONG, Jong Joo SOHN, In Ho SONG, Ju Han LEE, Byung Heon HWANG, Eun Kee KIM, Ung Soo KIM