Patents Assigned to Korea Electric Power Corporation
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Patent number: 10308529Abstract: The present invention relates to a desalination apparatus and a desalination method using the same. In one specific embodiment, the desalination apparatus comprises: a forward osmosis unit having a draw-solution part into which seawater flows, and a raw water part into which raw water flows, and having an osmosis membrane, formed between the draw solution part and the raw water part, so as to respectively generate first treated water and first concentrated water; a capacitive deionization unit, which is connected to the draw solution part through a first inflow passage, and into which the first treated water of the draw solution part flows so as to generate second treated water; and an electrodialysis unit, which is connected to the raw water part through a second inflow passage, and into which the first concentrated water of the raw water part flows so as to generate third treated water.Type: GrantFiled: June 23, 2016Date of Patent: June 4, 2019Assignee: Korea Electric Power CorporationInventors: Pill Yang Park, Jae Bong Lee, Seok Won Yoon, Ki Hyoung Kim, Kyu Il Kim
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Patent number: 10291023Abstract: The present invention relates to an inverter device for a microgrid, and a method for controlling the same, the inverter device including: a waveform detector detecting a voltage waveform and a current waveform applied to a load; a control unit determining whether a sine wave appears based on the detected voltage waveform and the detected current waveform and performing voltage control or low order harmonic compensation depending on a determination result; and a switch generating a voltage waveform in a form of the sine wave by being turned on/off depending on a control signal received from the control unit and supplying the generated voltage waveform in the form of the sine wave to the load.Type: GrantFiled: July 14, 2016Date of Patent: May 14, 2019Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Woo-Kyu Chae, Hak-Ju Lee, Jong-Nam Won, Il-Keun Song, Jung-Sung Park, Sung-Wook Hwang
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Publication number: 20190078944Abstract: The present invention relates to a method for estimating a geothermal gradient and an apparatus for estimating a geothermal gradient, and provides a method for estimating a geothermal gradient, the method comprising the steps of: calculating, at each of a plurality of points, a seismic wave crustal attenuation characteristic parameter of a seismic wave measured on the basis of the measured seismic wave information, with respect to the plurality of points; deriving an artificial neural network relational formula on the basis of the seismic wave crustal attenuation characteristic parameter; and calculating a geothermal gradient of an area of interest excluding the plurality of points on the basis of the artificial neural network relational formula, such that the geothermal gradient is estimated at a low cost by using a highly reliable method.Type: ApplicationFiled: August 24, 2016Publication date: March 14, 2019Applicant: Korea Electric Power CorporationInventors: Kwan Hee Yun, Jung Tak Shim, Eun Ju Jung
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Patent number: 10200409Abstract: Disclosed herein are an apparatus and method for security policy management, which manages a network access policy in order to integrate distributed security policies and to apply the integrated security policy in a smart grid environment. The apparatus for security policy management includes a rule set generation unit for generating a rule set by converting predefined access policy security rules, acquired from one or more systems, into a document in a standard format, a topology extraction unit for extracting a network topology from a network diagram of the one or more systems, and a standard policy generation unit for generating a standard policy by combining the generated rule set with the extracted topology.Type: GrantFiled: April 7, 2016Date of Patent: February 5, 2019Assignee: Korea Electric Power CorporationInventors: Yoojin Kwon, Yonghun Lim, Seongho Ju, Moonseok Choi, Yooseok Lim
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Patent number: 10180997Abstract: An apparatus for simulating a wind power farm includes a wind power generator simulator configured to act as a virtual wind power generator to dynamically generate an attribute value and provide the attribute value to a supervisory control and data acquisition (SCADA) system to be tested; a wind power generator simulation platform configured to generate and manage a plurality of wind power generator simulators within one system, monitor the system, monitor operation states of the plurality of wind power generator simulators, and transmit a result of monitoring the operation states; and a wind power farm controller configured to generate a wind power farm by grouping a plurality of wind power generator simulation platforms into a single cluster, and manage a simulation environment of the wind power farm.Type: GrantFiled: May 23, 2014Date of Patent: January 15, 2019Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Dong Wook Kim, Jae Kyung Lee, Nam Joon Jung, Hyo Yul Choi, Jun Shin Lee, Jae Ju Song
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Patent number: 10169528Abstract: The present invention relates to a method and device for generating an engineering topology of a digital substation. The method may include: generating, by a single line diagram generation module, a single line diagram of the digital substation based on input information regarding a plurality of substation component devices and connection relations therebetween; converting, by a topology conversion module, the single line diagram of the digital substation into an engineering topology conforming to international standards by use of conversion conditions stored in a topology component management module; verifying, by a topology verification module, whether the engineering topology is suitable for the digital substation based on the international standards; and generating, by an international standard file generation module, a single line diagram engineering file of the digital substation as a system specification description (SSS) by use of the verified engineering topology.Type: GrantFiled: March 19, 2013Date of Patent: January 1, 2019Assignee: Korea Electric Power CorporationInventors: Byung Tae Jang, Nam Ho Lee, Yong Ho An, Jong Kee Choi, Jeong Yeol Han, You Jin Lee, Eung Bo Shim, Dong Il Lee
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Patent number: 10164443Abstract: Disclosed is a method of controlling frequency of a power system by which a frequency of a power system is regulated using high-speed charging and discharging characteristics of a plurality of energy storage systems (ESSs) and a battery state of charge (SOC), the method including: an operation of comparing, by a control unit, first time information and second time information and performing an exit control mode when the first time information (Before_Exit_time) is equal to or less than the second time information (After_Exit_time); an operation of determining, the control unit, an output amount for each ESS for discharging batteries using a battery discharging amount determining function (Exit_control_output( ) function) when a first parameter value (D_time) preset in the exit control mode is a positive value greater than zero and the second time information (After_Exit_time) is equal to or less than a second parameter value (Clear_time); and an operation of discharging, by the control unit, batteries until tType: GrantFiled: November 8, 2016Date of Patent: December 25, 2018Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Geon Pyo Lim, Soo Yeol Kim, Chan Wook Park, Yo Han Choi, Seung Han Kim, Doo Yong Park, Yong Beum Yoon
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Publication number: 20180340962Abstract: Disclosed are an apparatus and method for diagnosing electric power equipment. The apparatus includes a measuring unit including a pan/tilt module mounted on the top of a vehicle and an imaging module mounted on an upper portion of the pan/tilt module, a determination unit for determining whether electric power equipment is detected by the measuring unit, a controller for performing control to capture a thermal image of the electric power equipment using the measuring unit, and a processing unit for dividing the thermal image into an analysis target equipment region, a non-interest equipment region, and a background noise region through pattern analysis of the thermal image and diagnosing the electric power equipment as being normal or as being abnormal on the basis of temperature information included in the analysis target equipment region.Type: ApplicationFiled: August 29, 2016Publication date: November 29, 2018Applicants: Korea Electric Power Corporation, Korea Electric Power CorporationInventors: Kwang-Heung JANG, Kang-Se LEE, Byoun-Hun JUNG, Doc-Jun BYUN, Min-Hee CHOI, Yong-Woo PARK
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Patent number: 10138615Abstract: Disclosed is a base body of an electric transmission tower using a micropile. The base body of the electric transmission tower using the micropile includes an anchor member coupled to a main pole member of the electric transmission tower, a foundation member coupled to the anchor member and including a plurality of foundations, and the micropile configured to fix the foundation member to the ground and compress the foundation member.Type: GrantFiled: May 19, 2015Date of Patent: November 27, 2018Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Dae Hong Kim, Won Sam Pyo, Jang Goon Kim, Dae Soo Lee
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Patent number: 10120953Abstract: The present invention relates to a system data abbreviation system and method. The system data abbreviation system includes a data mapping unit configured to classify system data, provided by an external database, into classes of a database of an internal application program and to then map the classified system data; a data search unit configured to search for data of the class to be abbreviated from the database of the application program; and a data abbreviation unit configured to group the found data of the class, to set link relations between data that belongs to the group, to set link relations between the group and the classes of the database of the application program, and to then abbreviate the data.Type: GrantFiled: October 4, 2012Date of Patent: November 6, 2018Assignee: Korea Electric Power CorporationInventors: Cheol-Min Chu, Sang-Yun Yun, Seong-Chul Kwon, Il-Keun Song
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Patent number: 10106979Abstract: The present invention relates to a seismic reinforcing device capable of conveniently conducting reinforcement of a structure, the device includes an upper support installed on an upper horizontal portion configured to connect columns, a lower support disposed under the upper horizontal portion, installed on a lower horizontal portion configured to connect the columns, and disposed in a diagonal direction with respect to the upper support, and a damper coupled to the upper support and the lower support and configured to absorb a shock.Type: GrantFiled: October 26, 2016Date of Patent: October 23, 2018Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Kyung Jin Lee, Kyung Won Hahm
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Patent number: 10095195Abstract: Provided are a device and a method for scheduling power storage devices, wherein a plurality of power storage device can be efficiently managed in an integrated manner by distributing appropriate charging and discharging schedules to each power storage device. The provided device for scheduling power storage devices comprises: an input unit for receiving integrated schedule information, characteristic information, and state information of the power storage devices; a scheduling unit for generating schedule information of the power storage devices on the basis of the received integrated schedule information, characteristic information, and state information; and an output unit for outputting the generated schedule information to the power storage devices.Type: GrantFiled: February 22, 2013Date of Patent: October 9, 2018Assignee: Korea Electric Power CorporationInventors: Byung-Hoon Chang, Yong-Gu Ha, Kwang-Hee Hong, Woong-Jae Jeon, Kyu-Won Jeong
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Publication number: 20180248374Abstract: Disclosed in a stand-alone micro-grid autonomous control system including: at least one battery system directly changing a reference frequency thereof according to a charge amount, and providing power having the changed reference frequency; at least one power generator measuring the reference frequency from the power provided form the at least one battery system, and starting generating power or stopping generating power based on the measured reference frequency; and at least one load measuring the reference frequency from the power provided from the battery system, and performing a synchronization operation or a synchronization releasing operation based on the measured reference frequency.Type: ApplicationFiled: July 14, 2016Publication date: August 30, 2018Applicant: Korea Electric Power CorporationInventors: Won-Wook JUNG, Cheol-Min CHU, Jung-Sung PARK, Sang-Yun YUN, Seong-Chul KWON, Jeong-Hun KIM
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Patent number: 10020437Abstract: Disclosed are a superconducting current-limiting element for a current limiter and a method of manufacturing a superconducting current-limiting element for a current limiter, in which the current-limiting element is formed in series by stacking linear superconducting wires, or is formed in parallel by stacking superconducting wires so that one or more superconducting wires are disposed in the same layer, thus facilitating the formation of the current-limiting element in series or in parallel and obviating the use of a winding machine when manufacturing the current-limiting element.Type: GrantFiled: July 18, 2014Date of Patent: July 10, 2018Assignee: Korea Electric Power CorporationInventors: Seong-Eun Yang, Hye-Rim Kim, Woo-Seok Kim, Seung-Duck Yu, Hee-Sun Kim, Ji-Young Lee, Byung-Jun Park, Young-Hee Han, Sang-Jin Han
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Publication number: 20180162753Abstract: The present invention relates to a desalination apparatus and a desalination method using the same. In one specific embodiment, the desalination apparatus comprises: a forward osmosis unit having a draw-solution part into which seawater flows, and a raw water part into which raw water flows, and having an osmosis membrane, formed between the draw solution part and the raw water part, so as to respectively generate first treated water and first concentrated water; a capacitive deionization unit, which is connected to the draw solution part through a first inflow passage, and into which the first treated water of the draw solution part flows so as to generate second treated water; and an electrodialysis unit, which is connected to the raw water part through a second inflow passage, and into which the first concentrated water of the raw water part flows so as to generate third treated water.Type: ApplicationFiled: June 23, 2016Publication date: June 14, 2018Applicant: Korea Electric Power CorporationInventors: Pill Yang PARK, Jae Bong LEE, Seok Won YOON, Ki Hyoung KIM, Kyu Il KIM
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Patent number: 9997919Abstract: An apparatus for operating a distributed generator in connection with a power system includes an input unit which receives a parameter calculated using power system information and a voltage and a current at a point of common coupling with the distributed generator, with which the distributed generator is connected, a calculation unit which calculates an operating power factor instruction value and an active output instruction value using the parameter and the voltage and current at the point of common coupling with the distributed generator input to the input unit, and a control communication unit which determines and transmits the operating power factor instruction value and the active output instruction value according to the voltage at the point of common coupling with the distributed generator input to the input unit and an admissible voltage upper limit at the point of common coupling with the distributed generator to the distributed generator.Type: GrantFiled: September 27, 2013Date of Patent: June 12, 2018Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Seong Soo Cho, Won Wook Jung, Il Keun Song, Sang Ok Kim, Joon Ho Choi
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Patent number: 9962918Abstract: The present invention relates to a production method for a support type ceramic membrane using tape casting, wherein, when producing a multifunctional membrane comprising a membrane structure such as a general electrochemical device or electrolysis cell or fuel cell, a dense-structure coating membrane or porous functional (separation) membrane is produced on one or more surfaces of a porous support.Type: GrantFiled: September 20, 2012Date of Patent: May 8, 2018Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Young-Sung Yoo, Mi-Hwa Choi, Tae-Hee Lee
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Patent number: 9885744Abstract: The present invention relates to a system and method for an abnormal waveform in a power distribution system that quickly transmits abnormal waveform-related data of a large size by changing a protocol according to data size. The system for detecting an abnormal power quality waveform comprises: a plurality of RTUs for measuring abnormal waveform when a waveform measuring signal received, and transmitting an abnormal waveform using a protocol set according to the size of the abnormal waveform; an FEP for transmitting the waveform measuring signal to an RTU installed in a failure section, and receiving and storing the abnormal waveform from the RTU; a main server for transmitting the waveform measuring signal through the FEP to the RTU installed in the failure section, performing controlling to measure the abnormal waveform generated in the failure section, and receiving and displaying the abnormal waveform according to the waveform measuring signal.Type: GrantFiled: September 30, 2011Date of Patent: February 6, 2018Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Sung-Woo Lee, Bok-Nam Ha, In-Yong Seo, Dong-Wan Seo, Moon-Jong Jang, Won Namkoong
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Patent number: 9882504Abstract: An HVDC power increase controller includes a command output unit for outputting a current command value according to a disturbance signal to a main controller; a voltage drop determiner receiving an alternating current (AC) voltage and comparing a level of the AC voltage to a lowest level of a voltage causing a rectification failure; and a power tracking determiner receiving a direct current (DC) power and comparing a level of the DC power to an estimated power level corresponding to the current command value. The command output unit adjusts the current command value according to a comparison result of the voltage drop determiner and the power tracking determiner.Type: GrantFiled: November 23, 2016Date of Patent: January 30, 2018Assignee: Korea Electric Power CorporationInventors: Seong Doo Lee, Soon Ho Choi, Chan Ki Kim
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Patent number: 9871377Abstract: The device for cooperation control of the EMS and the DMS comprises: a calculation unit for calculating an AQI index on the basis of target system information and power flow calculation data; a determination unit which determines whether or not to perform reactive power cooperation control switching of the DMS on the basis of the calculated AQI index and the amount of needed local reserve reactive power (Qreq), and which determines a suppliable reactive power capacity on the basis of the amount of needed local reserve reactive power (Qreq) and a suppliable reactive power range; and a control unit which transmits a cooperation control mode switching control signal so as to switch the DMS to a reactive power cooperation control mode if it is determined that reactive power cooperation control switching of the DMS is to be performed, and which controls the DMS to supply reactive power.Type: GrantFiled: September 17, 2013Date of Patent: January 16, 2018Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Jeong-Hoon Shin, Jae-Gul Lee, Seung-Mook Baek, Sang-Wook Han, Ji-Young Song, Tae-Kyun Kim