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    Partial discharge synthesizer
    1.
    发明授权
    Partial discharge synthesizer 有权

    公开(公告)号：US11181570B2

    公开(公告)日：2021-11-23

    申请号：US16232194

    申请日：2018-12-26

    Applicant: Rosemount Inc.

    Inventor： Jeffrey C. Andle ,  David Lane ,  Maly Chap

    IPC: G01R31/14 ,  G01R35/00

    Abstract: An apparatus for generating electrical discharge includes a component that generates an electrical discharge, a measurement circuit configured to measure a magnitude of the electrical discharge, and a controller configured to control the magnitudes of the electrical discharge. A method for controlling a reference partial discharge signal in an electric power system includes generating a partial discharge for built in self test, controlling an expected discharge magnitude of the partial discharge, and includes measuring an actual discharge magnitude of the partial discharge.

    PARTIAL DISCHARGE SYNTHESIZER
    3.
    发明申请
    PARTIAL DISCHARGE SYNTHESIZER 审中-公开

    公开(公告)号：US20190383872A1

    公开(公告)日：2019-12-19

    申请号：US16232194

    申请日：2018-12-26

    Applicant: Rosemount Inc.

    Inventor： Jeffrey C. Andle ,  David Lane ,  Maly Chap

    IPC: G01R31/14 ,  G01R35/00

    Abstract: An apparatus for generating electrical discharge includes a component that generates an electrical discharge, a measurement circuit configured to measure a magnitude of the electrical discharge, and a controller configured to control the magnitudes of the electrical discharge. A method for controlling a reference partial discharge signal in an electric power system includes generating a partial discharge for built in self test, controlling an expected discharge magnitude of the partial discharge, and includes measuring an actual discharge magnitude of the partial discharge.

    Partial discharge detection system
    4.
    发明授权
    Partial discharge detection system 有权

    公开(公告)号：US09753080B2

    公开(公告)日：2017-09-05

    申请号：US14961321

    申请日：2015-12-07

    Applicant: Rosemount Inc.

    Inventor： Jeffrey Charles Andle ,  Thomas M. Cunneen ,  Maly Chap

    IPC: G01R31/12 ,  G01R31/14

    CPC classification number: G01R31/1272 ,  G01R31/1218 ,  G01R31/14

    Abstract: A partial discharge detection system for detecting partial discharge events in an electrical component includes a transducer configured to receive a signal from the electrical component generated due to an occurrence of a partial discharge and responsively provide a transducer output. A signal processing chain includes a filter coupled to the transducer which filters the transducer output signal and responsively generating a filtered output. A digital signal processor performs a Discrete Fourier Transform (DFT) on the filtered output and generates coefficients which correspond to different modulation frequencies of the filtered, output. A controller identifies an occurrence of a partial discharge in the electrical component based upon the plurality of coefficients.

    PARTIAL DISCHARGE DETECTION SYSTEM
    6.
    发明申请
    PARTIAL DISCHARGE DETECTION SYSTEM 有权
    部分放电检测系统

    公开(公告)号：US20160161543A1

    公开(公告)日：2016-06-09

    申请号：US14961321

    申请日：2015-12-07

    Applicant: Rosemount Inc.

    Inventor： Jeffrey Charles Andle ,  Thomas M. Cunneen ,  Maly Chap

    IPC: G01R31/12 ,  G01R31/14

    CPC classification number: G01R31/1272 ,  G01R31/1218 ,  G01R31/14

    Abstract: A partial discharge detection system for detecting partial discharge events in an electrical component includes a transducer configured to receive a signal from the electrical component generated due to an occurrence of a partial discharge in the electrical component and responsively provide a transducer output signal to a signal processing chain A signal processing chain comprises one or more of the following. A filter coupled to the transducer filters the transducer output signal and responsively generating a filtered output. An amplifier coupled to the filter amplifies the filtered output and responsively provide an amplified output. A detector converts the amplified output to a detected baseband signal. A filter removes elements of the baseband signal that are not characteristic of partial discharge and outputs a filtered baseband output. A peak hold system matches the time scale of partial discharge events to the timescale of an analog to digital conversion process, resulting in a sampled, filtered, baseband signal. A digital signal processor performs a Discrete Fourier Transform (DFT) on the filtered baseband output and responsively generates a plurality of coefficients which correspond to a plurality of different modulation frequencies of the sampled, filtered, baseband signal. A controller identifies an occurrence of a partial discharge in the electrical component based upon the plurality of coefficients.

    Abstract translation: 用于检测电气部件中的局部放电事件的局部放电检测系统包括：换能器，被配置为接收由于在电气部件中发生局部放电而产生的电气部件的信号，并响应于将信号处理 链A信号处理链包括以下一个或多个。 耦合到换能器的滤波器对换能器输出信号进行滤波并响应地产生滤波输出。 耦合到滤波器的放大器放大滤波后的输出并且响应地提供放大的输出。 检测器将放大的输出转换为检测到的基带信号。 滤波器去除不是局部放电特征的基带信号的元件，并输出滤波后的基带输出。 峰值保持系统将局部放电事件的时间尺度与模数转换过程的时间尺度相匹配，产生采样，滤波的基带信号。 数字信号处理器在滤波后的基带输出上执行离散傅里叶变换（DFT），并且响应地产生对应于采样的，滤波的基带信号的多个不同调制频率的多个系数。 控制器基于多个系数来识别电气部件中的局部放电的发生。

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