Patents by Inventor Chol Jin KO

Chol Jin KO 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).

  • Apparatus and method for controlling circuit breaker for static synchronous compensator
    Patent number: 10923914
    Abstract: Provided is an apparatus and method for controlling a circuit breaker for a static synchronous compensator (STATCOM) such that the circuit breaker installed in a branch line for the STATCOM is operated according to the current control characteristics of the STATCOM, the apparatus including: a transformer protector for detecting the differential current between primary current and secondary current of a transformer connected in series to the circuit breaker in the branch line, and controlling the opening/closing of the circuit breaker; and a STATCOM controller for controlling an operation of the STATCOM, wherein the STATCOM controller outputs, to the transformer protector, an opening suspension signal for suspending the opening of the circuit breaker when overvoltage occurring in the STATCOM is detected, and the transformer protector suspends output of a circuit breaker opening signal to the circuit breaker according to the received opening suspension signal.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: February 16, 2021
    Assignee: HYOSUNG HEAVY INDUSTRIES CORPORATION
    Inventors: Jae Keun No, Chol Jin Ko
  • APPARATUS AND METHOD FOR CONTROLLING CIRCUIT BREAKER FOR STATIC SYNCHRONOUS COMPENSATOR
    Publication number: 20190027934
    Abstract: Provided is an apparatus and method for controlling a circuit breaker for a static synchronous compensator (STATCOM) such that the circuit breaker installed in a branch line for the STATCOM is operated according to the current control characteristics of the STATCOM, the apparatus including: a transformer protector for detecting the differential current between primary current and secondary current of a transformer connected in series to the circuit breaker in the branch line, and controlling the opening/closing of the circuit breaker; and a STATCOM controller for controlling an operation of the STATCOM, wherein the STATCOM controller outputs, to the transformer protector, an opening suspension signal for suspending the opening of the circuit breaker when overvoltage occurring in the STATCOM is detected, and the transformer protector suspends output of a circuit breaker opening signal to the circuit breaker according to the received opening suspension signal.
    Type: Application
    Filed: June 22, 2016
    Publication date: January 24, 2019
    Inventors: Jae Keun NO, Chol Jin KO