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KEP Korea Electric Power

GRANT
Utility
Power transformer asset management device and method therefor
23 Nov 21
The present invention relates to a power transformer asset management device and a method thereof, the device according to the present invention including: a full cycle database managing full cycle data of a power transformer; a physical performance evaluation unit performing physical performance evaluation that calculates a health index by analyzing and weighting life information, a failure ratio, operation history, and status information of a preventive diagnosis system from the full cycle data; a risk evaluation unit performing risk evaluation by generating a risk matrix using the physical performance evaluation result; an economic evaluation unit performing economic evaluation by evaluating costs over a full cycle of the power transformer; and an asset management unit establishing an investment plan for replacing the power transformer according to a maintenance priority of the power transformer determined using the physical performance evaluation result, the risk evaluation result, and the economic evaluation result.
Dong-Jin Kweon, Byoung-Soo Joo, Yong-Beum Yoon
Filed: 4 Aug 17
GRANT
Utility
Solid raw material for carbon dioxide absorbent, carbon dioxide absorbent composition comprising same, and carbon dioxide absorbent prepared using same
9 Nov 21
The present invention relates to a carbon dioxide absorbent used for absorbing carbon dioxide, a carbon dioxide absorbent composition used for producing the carbon dioxide absorbent, and a solid raw material for a carbon dioxide absorbent included in the carbon dioxide absorbent.
Joong Beom Lee, Tae Hyoung Eom, Hyun Geun Jo, Jeom In Baek, Ui Sik Kim
Filed: 18 Nov 16
APP
Utility
Electric Power Software Development Platform
4 Nov 21
A power software development platform may include a platform adapter configured to provide a connection environment for a plurality of communication devices each installed in a plurality of power facilities, a platform gateway configured to collect data through a plurality of power systems to which the plurality of communication devices are connected, a platform interface which provide a distribution service for the data collected by the platform gateway, a platform data hub configured to receive the data through the distribution service, verify the received data, and provide an access environment for the verified data to an application developer, an analysis abstraction service configured to convert a plurality of physical analysis engines into abstracted services and provide the abstracted services to the application developer, and an application gateway configured to receive an application from the application developer and provide the application to an application user.
Jung-Il LEE, Jun-Sung KIM, Hee-Jeong PARK, Ji-Kang SIN, Seung-Hwan CHOI
Filed: 15 Jan 18
GRANT
Utility
Combined power generation apparatus
19 Oct 21
A composite power generating device of the present invention includes an engine (110), a first flow line (121), a turbocharger (130), a second flow line (122), a third flow line (123), a compressor (211), a first medium line (221), a medium turbine (212), a second medium line (222), a working medium cooler (213), a recuperator (215), a power generating unit (214), a cross-line (233), a first heat exchanger (251), a second heat exchanger (252), and a third heat exchanger (253).
Gwang Nyeon Ryu, Jin Ki Ham, Beom Joo Kim, Cheol Hee Lee
Filed: 22 Jan 18
GRANT
Utility
AMI system for performing phase detection and synchronization in AMI communication network using relay communication method, and method thereof
5 Oct 21
The present invention relates to a system for performing phase detection and synchronization in an AMI communication network using a relay communication, and a method thereof.
Byung-Seok Park, No-Gil Myoung, Byung-Kab Jo, Jong-Mock Baek, Han-Jin Cho, Jung-Ho Lee, Jun-Su Shim
Filed: 13 Jul 17
APP
Utility
Phase Current Control Device for Dab Converter, and Method Therefor
9 Sep 21
Disclosed are a phase current control device for a DAB converter and a method therefor.
Jae-Han KIM, Ju-Yong KIM, Jin-Tae CHO, Young-Pyo CHO, Jee-Hoon JUNG, Hyun-Jun CHOI
Filed: 11 Nov 16
GRANT
Utility
Protective relay test equipment operation device and method
24 Aug 21
A protective relay test equipment operation device according to an embodiment of the present invention may comprise: a switch unit for, upon reception of a trip signal or a close signal from a protective relay, changing an electrical connection state between a first port configured to be electrically connected to test equipment that generates a test signal and a second port configured to be electrically connected to the protective relay; a measurement unit for measuring a voltage and a current between the first port and the second port during a test period in which an operation time point of the switch unit is a start time point or an end time point; and a calculation unit for calculating a plurality of time point-specific impedance values within the test period according to a measurement result of the measurement unit.
Young-Hun Kwon, Ki-Seob YuN, Guk-Tae Kim
Filed: 18 Aug 17
GRANT
Utility
Pressure generation apparatus and method for superconducting power equipment
10 Aug 21
The present invention relates to pressure generation apparatus and method for superconducting power equipment and, more particularly, to pressure generation apparatus and method for superconducting power equipment, wherein a pressure system separately arranged to apply pressure to liquid nitrogen in the superconducting power equipment is disposed inside a pressure vessel.
Young-Hee Han, Byung-Jun Park, Seong-Eun Yang
Filed: 23 Nov 16
GRANT
Utility
Exhaust gas purification apparatus and exhaust gas purification method using same
6 Jul 21
The present invention relates to an exhaust gas purification apparatus and an exhaust gas purification method using the same.
Yong Seok Eom, Jung Bin Lee, Jun Han Kim, Joong Won Lee, Kwang Beom Hur
Filed: 29 Nov 16
APP
Utility
Data Transmission System and Method In Physical Network Separation Environment
1 Jul 21
The present invention relates to a data transmission system and method in a physical network separation environment.
Jong-Kwan Kim, Seung-Youn Lee, Seung-Kwon Yang, Myong-Soo Kim, Dong-Wook Kim
Filed: 4 Jul 17
GRANT
Utility
Apparatus for controlling ESS according to transient stability state and method thereof
22 Jun 21
The present invention relates to an ESS control device based on transient stability state and a method thereof, the an ESS control device based on transient stability state according to an embodiment of the present invention including an input unit receiving phase angle information from a power system; a calculation unit calculating a change rate in the phase angle of the power system using the phase angle information; a determination unit determining the transient stability state of the power system by comparing the change rate of the phase angle with a predetermined threshold; and a control unit performing control so that an energy storage system (ESS) installed in a power generation stage is switched to a charging mode according to the determination result.
Tae-Ok Kim, Jong-An Kim, Gu-Han Kim, Chong-Ho Rhim, Yong-Gu Ha
Filed: 2 Aug 17
APP
Utility
Ami System for Performing Phase Detection and Synchronization In Ami Communication Network Using Relay Communication Method, and Method Thereof
17 Jun 21
The present invention relates to a system for performing phase detection and synchronization in an AMI communication network using a relay communication, and a method thereof.
Byung-Seok Park, No-Gil Myoung, Byung-Kab Jo, Jong-Mock Baek, Han-Jin Cho, Jung-Ho Lee, Jun-Su Shim
Filed: 13 Jul 17
APP
Utility
Apparatus and Method for Generating Data Quality Information of Electric Power Equipment
3 Jun 21
The present invention relates to an apparatus for generating data quality information of electric power equipment, the apparatus including a data collector configured to collect a piece of measured data of electric power equipment, a storage configured to store a previous value and a set value for the piece of measured data, and a quality value generator configured to generate a quality value for the piece of measured data by applying the piece of measured data, the previous value, and the set value to a predetermined logic circuit.
Chung Hyo Kim, Jun Churl Yoon, Young Sung Lee, Yong Hun Lim, Seong Ho Ju
Filed: 22 Jun 17
APP
Utility
System and Method for Automatic Diagnosis of Power Generation Facility
13 May 21
Disclosed are a system and a method for automatic diagnosis of a power generation facility, and a system for automatic diagnosis of a power generation facility which include a data measuring unit for acquiring vibration data from a rotating body of a power facility, a signal processing unit for signal-processing acquired vibration data, and extracting and quantifying predetermined characteristic factors with respect to a time domain, a frequency domain, and a shape area, a characteristic pattern storage unit for storing a characteristic factor pattern classified for each failure type, and a failure diagnosis unit for diagnosing whether a power facility to be diagnosed has a failure and a failure type of the power facility, on the basis of a classified characteristic factor pattern.
Yeon Whan KIM, Dong Hwan KIM, Doo Young LEE, Bum Soo KIM, Jin Pyo HONG, Joon Ha JUNG, Byung Chul JEON
Filed: 23 Aug 17
GRANT
Utility
System for detecting an abnormality in a carbon dioxide separation membrane plant
11 May 21
A carbon dioxide (CO2) separation membrane plant abnormality detection system includes: an entrance unit through which gas containing CO2 enters a plant including a CO2 separation membrane module; a separation membrane module; a permeation unit configured to discharge the gas with the relatively high CO2 concentration, which is discharged from the separation membrane module, to the outside of the plant; a residue unit configured to discharge the gas with the relatively low CO2 concentration, which is discharged from the separation membrane module, to the outside of the plant; a measurer configured to measure information; and a controller configured to determine the presence of an abnormality, wherein the controller determines whether the plant is in an abnormal situation.
Dong Sub Kim, Jung Bin Lee, Joong Won Lee, Ky Yeong Shin, Gwan Shig Kim
Filed: 5 Jan 18
GRANT
Utility
Vessel for transporting and installing offshore wind power generator
4 May 21
The present invention relates to a vessel for transporting and installing a offshore wind power generator.
Jun-Shin Lee, Hong-Kyou Cho, Yang-Ryul Choi, Young-Key Kim, Ji-Young Kim, Moo-Sung Ryu, Min-Uk Jung, Dong-Ho Cho
Filed: 10 Jun 19
GRANT
Utility
Method for controlling frequency of stand-alone microgrid and power converter for energy storage device for controlling same
16 Mar 21
The present invention relates to a method for controlling the frequency of a stand-alone microgrid wherein an energy storage device of the stand-alone microgrid is operated as a main power source by controlling a battery power conditioning system (PCS) of the stand-alone microgrid in a constant voltage constant frequency (CVCF) mode.
Woo-Kyu Chae, Hak-Ju Lee, Jung-Sung Park, Jong-Nam Weon, Jun-Bo Sim
Filed: 14 Nov 16
GRANT
Utility
Reflected-wave processing apparatus
9 Mar 21
A reflected-wave processing apparatus according to one embodiment of the present invention may comprise: a reference signal generation unit for applying, to a cable, a first reference signal, the frequency of which increases over time, and a second reference signal, the frequency of which decreases over time; a reflected-signal acquisition unit for acquiring a first reflected signal and a second reflected signal which are reflected from the cable upon applying the first and second reference signals thereto; and a signal analysis unit for analyzing the first and second reflected signals.
Song-Ho Sohn, Sang-Cheol Han, Hyung-Suk Yang, Seong-Woo Yim, Yong-June Shin, Geon-Seok Lee, Su-Sik Bang, Yeong-Ho Lee, Gu-Young Kwon
Filed: 22 Nov 16
APP
Utility
Apparatus and Method for Diagnosing Battery
14 Jan 21
The present invention relates to an apparatus and a method for diagnosing a battery, and comprises: a power conversion unit for discharging and charging a battery; and a control unit for controlling the power conversion unit to discharge and charge the battery, and diagnosing power fade of the battery by calculating a maximum discharge output and a maximum charge output of the battery on the basis of a voltage and a current of the battery measured during discharging and charging of the battery.
Jin Hyeok CHOI, Ji Hun LIM, Sung Eun LEE
Filed: 24 Jul 18
APP
Utility
Data Concentration Unit and Operating Method Thereof
30 Dec 20
The present invention relates to a data concentration unit and an operating method thereof.
Kang-Se Lee, Hyeong-Ju Lee, Jae-Wan Kim
Filed: 10 Aug 17
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