Patents by Inventor Kwon-Bae Park
Kwon-Bae Park 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).
-
Patent number: 8830646Abstract: Provided is a protection coordination system. The system includes a current limiter arranged on a line between a first relay and a second relay to limit a fault current generated to within a predetermined scope.Type: GrantFiled: July 11, 2012Date of Patent: September 9, 2014Assignee: LSIS Co., Ltd.Inventors: Seung Hyun Bang, Kwon Bae Park, Won Joon Choe, Jung Wook Sim, Gyeong Ho Lee, Hae Yong Park, Min Jee Kim
-
Publication number: 20130021707Abstract: Provided is a protection coordination system, the system includes a current limiter arranged on a line between a first and a relays to limit a fault current generated to within a predetermined scope.Type: ApplicationFiled: July 11, 2012Publication date: January 24, 2013Applicant: LSIS CO., LTD.Inventors: Seung Hyun BANG, Kwon Bae PARK, Won Joon CHOE, Jung Wook SIM, Gyeong Ho LEE, Hae Yong PARK, Min Jee KIM
-
Patent number: 8335060Abstract: The present invention is related to a hybrid fault current limiter comprising a switching unit detaching a moving contact located on a cable and transmitting a trip signal if a fault current is flowed at an electric power system, a semiconductor switching unit connected in series with the switching unit and configured to be turned off to limit the flow of the fault current when the trip signal is transmitted, and a circuit breaking unit connected in parallel to the switching unit and the semiconductor switching unit and configured to limit the fault current detoured from the switching unit and the semiconductor switching unit. The present invention provides rapid treatment for the fault current problem by applying the algorithm sensing the occurrence of the fault current and the algorithm limiting the fault current simultaneously.Type: GrantFiled: March 1, 2011Date of Patent: December 18, 2012Assignee: LS Industrial Systems Co., Ltd.Inventors: Seung Hyun Bang, Kwon Bae Park, Jung Wook Sim, Won Joon Choe, Gyeong Ho Lee
-
Patent number: 8228655Abstract: The present disclosure is related to a fault current limiter comprising, a current limiting unit configured to limit a fault current according to a reactance value by increasing the reactance value if the fault current is generated, and a driving unit configured to increases an inductance of the current limiting unit by generating a repulsive force by means of the fault current when the fault current is received and the driving unit is connected to the front end of the current limiting unit.Type: GrantFiled: July 2, 2009Date of Patent: July 24, 2012Assignee: LS Industrial Systems Co., Ltd.Inventors: Kwon Bae Park, Won Joon Choe, Jung Wook Sim, Gyeong Ho Lee
-
Patent number: 8184420Abstract: The present disclosure relates to a fault current limiter, comprising: a trigger device dividing a fault current to a path on which a normal current flows and to a path on which the fault current flows when the fault current is generated; a first switch connected in series to a rear end of the trigger device; a fixation unit for fixing an open/close state of the first switch; a driver for opening a contact point contacted by the first switch by repulsive force generated by the fault current in a case the fault current divided by the trigger device is inputted; and a control module for driving the fixation unit in order to fix the open/close state of the first switch in a case the fault current is generated.Type: GrantFiled: December 9, 2009Date of Patent: May 22, 2012Assignee: LS Industrial Systems Co., Ltd.Inventors: Gyeong Ho Lee, Kwon Bae Park, Jung Wook Sim
-
Patent number: 8077438Abstract: The present disclosure is related to a peak current limiting apparatus of the present disclosure comprising a trigger element serially connected between a power supply source and the load, diverting a fault current to other paths connected in parallel when the fault current exceeding a threshold is generated, a main contact switch serially connected between the trigger element and a load, a driving coil connected in parallel with the trigger element, and generating a repulsive force in response to the fault current to detach a contact point of the main contact switch, and a peak limiting impedance element serially connected between a connection node between the trigger element and the main contact switch and the driving coil, and limiting a first peak level of the fault current flowing through the driving coil to a predetermined level.Type: GrantFiled: January 23, 2009Date of Patent: December 13, 2011Assignee: LS Industrial Systems Co., Ltd.Inventors: Jung Wook Sim, Kwon Bae Park, Gyeong Ho Lee
-
Publication number: 20110261496Abstract: The present invention is related to a hybrid fault current limiter comprising a switching unit detaching a moving contact located on a cable and transmitting a trip signal if a fault current is flowed at an electric power system, a semiconductor switching unit connected in series with the switching unit and configured to be turned off to limit the flow of the fault current when the trip signal is transmitted, and a circuit breaking unit connected in parallel to the switching unit and the semiconductor switching unit and configured to limit the fault current detoured from the switching unit and the semiconductor switching unit. The present invention provides rapid treatment for the fault current problem by applying the algorithm sensing the occurrence of the fault current and the algorithm limiting the fault current simultaneously.Type: ApplicationFiled: March 1, 2011Publication date: October 27, 2011Inventors: Seung Hyun Bang, Kwon Bae Park, Jung Wook Sim, Won Joon Choe, Gyeong Ho Lee
-
Publication number: 20100165533Abstract: The present disclosure relates to a fault current limiter, comprising: a trigger device dividing a fault current to a path on which a normal current flows and to a path on which the fault current flows when the fault current is generated; a first switch connected in series to a rear end of the trigger device; a fixation unit for fixing an open/close state of the first switch; a driver for opening a contact point contacted by the first switch by repulsive force generated by the fault current in a case the fault current divided by the trigger device is inputted; and a control module for driving the fixation unit in order to fix the open/close state of the first switch in a case the fault current is generated.Type: ApplicationFiled: December 9, 2009Publication date: July 1, 2010Inventors: Gyeong Ho Lee, Kwon Bae Park, Jung Wook Sim
-
Publication number: 20100165532Abstract: The present disclosure is related to a fault current limiter comprising, a current limiting unit configured to limit a fault current according to a reactance value by increasing the reactance value if the fault current is generated, and a driving unit configured to increases an inductance of the current limiting unit by generating a repulsive force by means of the fault current when the fault current is received and the driving unit is connected to the front end of the current limiting unit.Type: ApplicationFiled: July 2, 2009Publication date: July 1, 2010Inventors: Kwon Bae Park, Won Joon Choe, Jung Wook Sim, Gyeong Ho Lee
-
Patent number: 7742264Abstract: Disclosed is provided a hybrid-type superconducting fault current limiter for rapidly limiting a fault current, the fault current limiter having a first circuit and a second circuit which are connected in parallel with each other, wherein the first circuit includes a superconductor and a circuit breaker which are connected in series with each other, and wherein the second circuit includes a driver having a driving coil and an electromagnetic repeller, a short contact connected in parallel with the driver, and a current limiting unit connected in series with a third circuit including the driver and the short contact. The hybrid-type superconducting fault current limiter comprises a power semiconductor element switch connected in series with the first circuit, the power semiconductor element switch normally maintaining an ON state and being activated and changed into an OFF state by a fault sensing signal generated according to an inflow of the fault current.Type: GrantFiled: December 28, 2007Date of Patent: June 22, 2010Assignees: Korea Electric Power Corporation, LS Industrial Systems Co., Ltd.Inventors: Ok-Bae Hyun, Hye-Rim Kim, Seong-Woo Yim, Jung-Wook Sim, Kwon-Bae Park, Bang-Wook Lee
-
Publication number: 20090195954Abstract: The present disclosure is related to a peak current limiting apparatus of the present disclosure comprising a trigger element serially connected between a power supply source and the load, diverting a fault current to other paths connected in parallel when the fault current exceeding a threshold is generated, a main contact switch serially connected between the trigger element and a load, a driving coil connected in parallel with the trigger element, and generating a repulsive force in response to the fault current to detach a contact point of the main contact switch, and a peak limiting impedance element serially connected between a connection node between the trigger element and the main contact switch and the driving coil, and limiting a first peak level of the fault current flowing through the driving coil to a predetermined level.Type: ApplicationFiled: January 23, 2009Publication date: August 6, 2009Inventors: Jung Wook SIM, Kwon Bae Park, Gyeong Ho Lee
-
Patent number: 7558030Abstract: A resistive superconducting fault current limiter comprises: a superconducting limiter element which is in a superconductive state in the event of a normal current occurrence, and which is in a normal conductive state having a predetermined resistance when a fault current larger than a predetermined threshold current value flows; a superconducting serial coil serially connected to the superconducting limiter element so as to face each other so that a current loss can be minimized accordingly as currents flow in opposite directions thus to cancel magnetic fields, and having a threshold current value greater than the threshold current value of the superconducting limiter element by a predetermined ratio; and a normal conductor parallel coil connected to the superconducting limiter element in parallel and having a predetermined resistance smaller than the resistance of the superconducting limiter element when a fault current occurs, for preventing the superconducting limiter element from being overheated by diviType: GrantFiled: June 30, 2006Date of Patent: July 7, 2009Assignee: LS Industrial System Co., Ltd.Inventors: Bang-Wook Lee, Kwon-Bae Park
-
Patent number: 7545611Abstract: An electric power circuit protecting apparatus using a superconductor in an electric power system needing re-closing within a predetermined time from fault current blocking, comprising a main circuit breaker; a first superconductor element connected in series to the main circuit breaker; a first auxiliary switch to switch a circuit between the first superconductor element and the main circuit breaker; a second superconductor element connected in parallel to the first superconductor element and the first auxiliary switch; a second auxiliary switch to switch a circuit between the second superconductor element and the main circuit breaker; a first monitoring unit for detecting a voltage across the first superconductor element and for supplying a first switching control signal to the first auxiliary switch to be switched to the circuit open position, and a second switching control signal to the second auxiliary switch to be switched to the circuit close position; and a second monitoring unit for detecting a voltaType: GrantFiled: October 23, 2006Date of Patent: June 9, 2009Assignee: LS Industrial Systems Co., Ltd.Inventors: Bang-Wook Lee, Kwon-Bae Park
-
Patent number: 7538991Abstract: Disclosed is a half-wave expulsion type superconducting fault-current limiter having an integral high speed switch module. The fault-current limiter has minimum superconducting elements and a circuit of which is formed in a hybrid type with an integral high speed switch module. The fault-current limiter supplies an electric power supplied from a power feeder to a system without loss thereof according to unique characteristics of the superconducting element when a normal current flows, and restricts an over current through a high speed switching contact point integrally inter-working with a driving coil and an arc changeover switch past a half period in a case that the over-current is generated by accidents such that electric power appliances, including circuit breakers in an electric power system, can be normally operated.Type: GrantFiled: December 15, 2006Date of Patent: May 26, 2009Assignee: LS Industrial Systems Co., Ltd.Inventors: Kwon-bae Park, Bang-wook Lee
-
Publication number: 20090052097Abstract: Disclosed is provided a hybrid-type superconducting fault current limiter for rapidly limiting a fault current, the fault current limiter having a first circuit and a second circuit which are connected in parallel with each other, wherein the first circuit includes a superconductor and a circuit breaker which are connected in series with each other, and wherein the second circuit includes a driver having a driving coil and an electromagnetic repeller, a short contact connected in parallel with the driver, and a current limiting unit connected in series with a third circuit including the driver and the short contact. The hybrid-type superconducting fault current limiter comprises a power semiconductor element switch connected in series with the first circuit, the power semiconductor element switch normally maintaining an ON state and being activated and changed into an OFF state by a fault sensing signal generated according to an inflow of the fault current.Type: ApplicationFiled: December 28, 2007Publication date: February 26, 2009Applicants: KOREA ELECTRIC POWER CORPORATION, LS INDUSTRIAL SYSTEMS CO. Ltd.Inventors: Ok-Bae Hyun, Hye-Rim Kim, Seong-Woo Yim, Jung-Wook Sim, Kwon-Bae Park, Bang-Wook Lee
-
Publication number: 20080103051Abstract: Disclosed is a half-wave expulsion type superconducting fault-current limiter having an integral high speed switch module. The fault-current limiter has minimum superconducting elements and a circuit of which is formed in a hybrid type with an integral high speed switch module. The fault-current limiter supplies an electric power supplied from a power feeder to a system without loss thereof according to unique characteristics of the superconducting element when a normal current flows, and restricts an over current through a high speed switching contact point integrally inter-working with a driving coil and an arc changeover switch past a half period in a case that the over-current is generated by accidents such as thunder-stroke, earth fault and short circuit, such that electric power appliances such as circuit breakers in an electric power system can be normally operated.Type: ApplicationFiled: December 15, 2006Publication date: May 1, 2008Inventors: Kwon-bae Park, Bang-wook Lee
-
Patent number: 7345858Abstract: Disclosed is a resistive superconducting fault current limiter capable of enhancing a current of a superconducting device thereof, capable of preventing heat generated at a linear coil, capable of removing a magnetic field generated through the linear coil when a normal current is applied to a circuit of a power system, and capable of using not only a BISCCO based superconducting device but also a YBCO based superconducting device with using a magnet generating device separated from the circuit of the power system so that a current of the power system can not flow to the linear coil of the resistive superconducting fault current limiter when a normal current flows to the power system.Type: GrantFiled: September 24, 2004Date of Patent: March 18, 2008Assignee: LG Industrial Systems Co., Ltd.Inventors: Bang-Wook Lee, Kwon-Bae Park
-
Publication number: 20080043382Abstract: The present invention relates to a complex superconducting fault current limiter which adds a current limiting reactor to a superconductor to protect the power line from a fault current, and more particularly, to a complex superconducting fault current limiter using a minimum number of superconducting fault current limiters, while avoiding series and parallel connections of a plurality of superconductors and coils, in order to economically manufacture the fault current limiter in a small size. A superconductor, a high speed switch, and a circuit breaker are connected in series to each other, and a first reactor with a low impedance and a second reactor with a high impedance are connected in parallel to the power line so as to provide a branch circuit for the current to the series circuit. A semiconductor switch is connected in parallel to the second reactor with a high impedance in accordance with the opening high speed switch.Type: ApplicationFiled: December 27, 2006Publication date: February 21, 2008Applicant: LS INDUSTRIAL SYSTEMS CO., LTD.Inventors: Bang-Wook LEE, Kwon-Bae PARK
-
Publication number: 20070139832Abstract: An electric power circuit protecting apparatus using a superconductor in an electric power system needing re-closing within a predetermined time from fault current blocking, comprising a main circuit breaker; a first superconductor element connected in series to the main circuit breaker; a first auxiliary switch to switch a circuit between the first superconductor element and the main circuit breaker; a second superconductor element connected in parallel to the first superconductor element and the first auxiliary switch; a second auxiliary switch to switch a circuit between the second superconductor element and the main circuit breaker; a first monitoring unit for detecting a voltage across the first superconductor element and for supplying a first switching control signal to the first auxiliary switch to be switched to the circuit open position, and a second switching control signal to the second auxiliary switch to be switched to the circuit close position; and a second monitoring unit for detecting a voltaType: ApplicationFiled: October 23, 2006Publication date: June 21, 2007Applicant: LS INDUSTRIAL SYSTEMS CO., LTDInventors: Bang-Wook LEE, Kwon-Bae PARK
-
Publication number: 20070127171Abstract: A resistive superconducting fault current limiter comprises: a superconducting limiter element which is in a superconductive state in the event of a normal current occurrence, and which is in a normal conductive state having a predetermined resistance when a fault current larger than a predetermined threshold current value flows; a superconducting serial coil serially connected to the superconducting limiter element so as to face each other so that a current loss can be minimized accordingly as currents flow in opposite directions thus to cancel magnetic fields, and having a threshold current value greater than the threshold current value of the superconducting limiter element by a predetermined ratio; and a normal conductor parallel coil connected to the superconducting limiter element in parallel and having a predetermined resistance smaller than the resistance of the superconducting limiter element when a fault current occurs, for preventing the superconducting limiter element from being overheated by diviType: ApplicationFiled: June 30, 2006Publication date: June 7, 2007Applicant: LS INDUSTRIAL SYSTEM CO., LTD.Inventors: Bang-Wook LEE, Kwon-Bae PARK