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    HVDC CABLE PARTIAL DISCHARGE DIAGNOSIS SYSTEM AND METHOD
    1.
    发明公开
    HVDC CABLE PARTIAL DISCHARGE DIAGNOSIS SYSTEM AND METHOD 审中-公开

    公开(公告)号：US20240288484A1

    公开(公告)日：2024-08-29

    申请号：US18573428

    申请日：2022-07-06

    Applicant: KOREA ELECTRIC POWER CORPORATION

    Inventor： Chae Kyun JUNG ,  Su Hwan KIM ,  Ji Won KANG

    IPC: G01R31/08

    CPC classification number: G01R31/088 ,  G01R31/083

    Abstract: Disclosed are a high-voltage direct current (HVDC) cable partial discharge diagnosis system and method. The HVDC cable partial discharge diagnosis system according to one aspect of the present invention comprises: a sensor provided on an HVDC cable; a plurality of HVDC cable partial discharge measurement devices for acquiring measurement result information from the sensor and detecting a partial discharge signal from the measurement result information; and an HVDC cable partial discharge diagnosis device which receives the partial discharge signal from the HVDC cable partial discharge measurement devices and diagnoses whether partial discharge has occurred in the HVDC cable, through pattern analysis of the partial discharge signal.

    Metering data management system and computer readable recording medium
    5.
    发明授权
    Metering data management system and computer readable recording medium 有权

    公开(公告)号：US11341842B2

    公开(公告)日：2022-05-24

    申请号：US16068656

    申请日：2016-11-21

    Applicant: Korea Electric Power Corporation

    Inventor： Yong Jae Joo ,  Jin Ho Shin ,  Jae Koo Noh

    IPC: G06F11/00 ,  G08C25/04 ,  G06F11/07 ,  G08C17/02 ,  G08C19/16 ,  H04L67/562

    Abstract: The present invention relates to a metering data management system including a metering data transmission module configured to collect a piece of metering data and generate a message containing the piece of metering data and topic information corresponding to the piece of metering data, a plurality of buffer servers, each of which has a plurality of buffers to which different topics are assigned, configured to store the message in a buffer corresponding to the topic information, a metering data processing module configured to extract the piece of metering data from some of the plurality of buffer servers and process the extracted piece of metering data, and a broker server configured to determine a buffer server, which is an extraction target of the metering data processing module, among the plurality of buffer servers on the basis of state information of the plurality of buffer servers.

    Device and method for detecting failure location of underground cable
    7.
    发明授权
    Device and method for detecting failure location of underground cable 有权

    公开(公告)号：US11226361B2

    公开(公告)日：2022-01-18

    申请号：US16652135

    申请日：2018-08-24

    Applicant: KOREA ELECTRIC POWER CORPORATION

    Inventor： Chae-Kyun Jung ,  Yong-June Shin ,  Gu-Young Kwon ,  Tae-Kyun Kim ,  Jae-Sang Hwang

    IPC: G01R31/11 ,  G01R31/08

    Abstract: An apparatus and a method for detecting a fault location of an underground cable are proposed. The apparatus includes: an optimal reference signal design unit configured to design a reference signal for detecting the fault location of the underground cable considering propagation characteristics of the underground cable according to a time-frequency domain reflectometry method; a signal application and acquisition unit configured, as the designed reference signal is generated and applied to the underground cable, to acquire the reference signal applied to the underground cable and a reflected signal of the applied reference signal; and a data analysis unit configured to analyze whether a fault location of the underground cable exists according to a decision on similarity between the reference signal and the reflected signal after obtaining a time-frequency domain energy distribution for the acquired reference signal and reflected signal.

    Protective relay test equipment operation device and method
    9.
    发明授权
    Protective relay test equipment operation device and method 有权

    公开(公告)号：US11101635B2

    公开(公告)日：2021-08-24

    申请号：US16490879

    申请日：2017-08-18

    Applicant: KOREA ELECTRIC POWER CORPORATION

    Inventor： Young-Hun Kwon ,  Ki-Seob YuN ,  Guk-Tae Kim

    IPC: G01R31/327 ,  H02H3/10 ,  H02H1/00

    Abstract: 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.

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