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    INFRARED ZERO VALUE DIAGNOSIS METHOD AND SYSTEM FOR PORCELAIN INSULATOR STRING
    3.
    发明申请
    INFRARED ZERO VALUE DIAGNOSIS METHOD AND SYSTEM FOR PORCELAIN INSULATOR STRING 有权

    公开(公告)号：US20220113343A1

    公开(公告)日：2022-04-14

    申请号：US17276480

    申请日：2020-12-31

    Applicant: State Grid Hubei Electric Power Research Institute ,  Hunan University

    Inventor： Xueming Zhou ,  Danhui Hu ,  Xiaopo Mao ,  Jungang Yin ,  Jianjin Fu ,  Zhiqiang Feng ,  Yaodong Zhang ,  Zeqi Huang ,  Tianru Shi

    IPC: G01R31/12

    Abstract: An infrared zero value diagnosis method and system for a porcelain insulator string are provided. The method includes: collecting an infrared thermogram of a to-be-diagnosed porcelain insulator string; extracting temperature of an iron cap of each insulator in the infrared thermogram of the to-be-diagnosed porcelain insulator string; calculating a temperature gradient value of each insulator in the to-be-diagnosed porcelain insulator string, drawing a temperature gradient distribution curve, and generating a temperature gradient distribution matrix of all to-be-diagnosed porcelain insulator strings; calculating a correlation coefficient of the temperature gradient distribution curve and a correlation coefficient of an average-value curve for each insulator string, and presenting the correlation coefficients in a scatter diagram; and performing comprehensive analysis and determining on the temperature gradient distribution curve, the temperature gradient distribution matrix of the to-be-diagnosed porcelain insulator strings, and the scatter diagram, to complete detection of the to-be-diagnosed porcelain insulator string.

    Insulation diagnosis and positioning method for insulated bus pipe
    4.
    发明授权
    Insulation diagnosis and positioning method for insulated bus pipe 有权

    公开(公告)号：US10948532B1

    公开(公告)日：2021-03-16

    申请号：US16648114

    申请日：2020-01-06

    Applicant: STATE GRID HUBEI ELECTRIC POWER RESEARCH INSTITUTE ,  STATE GRID CORPORATION OF CHINA

    Inventor： Wenpei Li ,  Ling Ruan ,  Rui Liu

    IPC: G01R31/08

    Abstract: Provided are an insulation diagnosis and defect positioning method, apparatus and device for an insulated bus pipe, and a storage medium. The method includes: applying a test voltage between a ground electrode and a conductor portion of the insulated bus pipe; identifying multiple grounded segments of the insulated bus pipe according to a ground shielded short wiring and a line ground wiring, measuring a length of each grounded segment and a ground current of each grounded segment at the test voltage, and calculating a ground current per unit length of each grounded segment; comparing ground currents per unit length of different grounded segments; measuring a capacitance current value of each grounded segment according to a quantity, a length and a number of intermediate couplings included in each grounded segment; comparing the ground current and the capacitance current value of each grounded segment; according to the comparison results, diagnosing an insulation status and implementing defect positioning of the insulated bus pipe.

    Method for detecting time synchronization ability of real-time measuring device based on time variable
    6.
    发明授权
    Method for detecting time synchronization ability of real-time measuring device based on time variable 有权
    基于时间变量检测实时测量装置的时间同步能力的方法

    公开(公告)号：US09257039B2

    公开(公告)日：2016-02-09

    申请号：US14239769

    申请日：2012-11-23

    Applicant: STATE GRID CORPORATION OF CHINA ,  STATE GRID HUBEI ELECTRIC POWER RESEARCH INSTITUTE

    Inventor： Hong Chen ,  Yongjun Xia ,  Yuehai Yu ,  Gang Hu ,  Yong Cai ,  Jin Wang ,  Qian Tao

    IPC: G08C19/24 ,  H02J13/00 ,  G01R19/25 ,  G04G7/00

    CPC classification number: G08C19/24 ,  G01R19/2513 ,  G04G7/00 ,  H02J13/00

    Abstract: A method for detecting a time synchronization ability of the real-time measuring device based on a time variable is provided. On a premise that the real-time measuring device correctly receives time service signals, the method aims at detecting time synchronization signal application ability of the real-time measuring device, and involves a purely resistive loop comprising a value transferring device and a time controllable switch. The method, via a time synchronization performance thereof, relatively completely reflects the time synchronization signal application ability of the device within a value transfer requirement. The method is a development upon power station time synchronization time service signals and transmission accuracy detection and an improvement of power station time synchronization detection procedures. The method facilitates improving real-time analysis and monitoring abilities of a power station and a power grid to a primary device and a primary system.

    Abstract translation: 提供了一种用于基于时间变量来检测实时测量装置的时间同步能力的方法。 在实时测量设备正确接收时间服务信号的前提下，该方法旨在检测实时测量设备的时间同步信号应用能力，并且涉及一种纯电阻回路，包括值传输设备和时间可控开关 。 该方法通过其时间同步性能相对完全地反映了设备在时间同步信号的应用能力内的价值转移要求。 该方法是电站时间同步时间服务信号和传输精度检测的发展，并改进了电站时间同步检测程序。 该方法有助于提高电站和电网对主设备和主系统的实时分析和监控能力。

    Testing device for propagation characteristic of electromagnetic wave in gas insulated switchgear and testing method therefor
    7.
    发明申请
    Testing device for propagation characteristic of electromagnetic wave in gas insulated switchgear and testing method therefor 有权
    气体绝缘开关柜电磁波传播特性试验装置及其测试方法

    公开(公告)号：US20150369853A1

    公开(公告)日：2015-12-24

    申请号：US14654532

    申请日：2013-11-14

    Applicant: STATE GRID CORPORATION OF CHINA ,  STATE GRID HUBEI ELECTRIC POWER RESEARCH INSTITUTE ,  CHINA ELECTRIC POWER RESEARCH INSTITUTE ,  XI ' AN JIAOTONG UNIVERSITY

    Inventor： Jun Chen ,  Jinbin Li ,  Jun Lu ,  Haiqiong Liu ,  Min Chen ,  Hao Wang ,  Jiangang Bi ,  Shuai Yuan ,  Yuan Yang ,  Junhao Li ,  Jianfeng Liang ,  Yanming Li

    IPC: G01R31/12 ,  H01Q1/36

    CPC classification number: G01R31/1254 ,  H01Q1/362 ,  H04B17/00

    Abstract: A testing device for propagation characteristic of electromagnetic wave in gas insulated switchgear includes an ultrahigh frequency signal generator, a GIS testing chamber, an emitting antenna and a receiving antenna which are provided inside the GIS testing chamber. A detachable disc insulator is provided between the emitting antenna and the receiving antenna. Both terminals of a GIS testing chamber are sealed by polyurethane wave-absorbing sponge; the ultrahigh frequency signal generator is connected with the emitting antenna, and the receiving antenna is connected with a oscilloscope. A guide rod which is fixed by the disc insulator is provided in the GIS testing chamber. The present invention is capable of achieving testing propagation characteristic of partial discharge ultrahigh frequency electromagnetic wave signal of a gas insulated switchgear in a laboratory, so as to master attenuation characteristics of the partial discharge ultrahigh frequency electromagnetic wave signal, and lay a laboratory foundation for accurate detection of the partial discharge of the gas insulated switchgear by field use of an ultrahigh-frequency method.

    Abstract translation: 气体绝缘开关设备电磁波传播特性试验装置包括设在GIS测试室内部的超高频信号发生器，GIS测试室，发射天线和接收天线。 在发射天线和接收天线之间提供可拆卸的盘式绝缘体。 GIS测试室的两个端子都用聚氨酯吸波海绵密封; 超高频信号发生器与发射天线连接，接收天线与示波器连接。 在GIS测试室中设置由盘式绝缘体固定的导杆。 本发明能够实现实验室气体绝缘开关设备的局部放电超高频电磁波信号的测试传播特性，从而掌握局部放电超高频电磁波信号的衰减特性，为准确的 通过现场使用超高频法检测气体绝缘开关柜的局部放电。

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