公开(公告)号：US20180252760A1

公开(公告)日：2018-09-06

申请号：US15910106

申请日：2018-03-02

Applicant: Rosemount Inc.

Inventor： Jeffrey Charles Andle ,  Jonathan P. Murray ,  David J. Lane ,  Thomas M. Cunneen

IPC: G01R31/14 ,  G01R31/12

CPC classification number: G01R31/14 ,  G01R31/1227 ,  G01R31/1272 ,  H02H1/0015

Abstract: A method of detecting a partial discharge in an electrical asset includes sensing of a discharge current in the electrical asset using a transducer and responsively providing a transducer output; processing the transducer output by comparing the transducer output to a baseline; calculating an accumulated amount by which the transducer output exceeds the baseline; decreasing the accumulated amount with time; detecting partial discharge in the electrical asset based upon the accumulated amount; and providing an output related to detected partial discharge. A partial discharge detection system for detecting a partial discharge in an electrical asset includes a transducer configured to receive a signal from the electrical asset generated due to an occurrence of partial discharging in the electrical asset and responsively providing a transducer output. Processing circuitry compares the transducer output to a baseline, calculates an accumulated amount by which the transducer output exceeds the baseline, decreases the accumulated amount with time, and detects partial discharge in the electrical asset based upon the accumulated amount. Output circuitry provides an output related to detected partial discharge.

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。

公开(公告)号：US11448682B2

公开(公告)日：2022-09-20

申请号：US15910106

申请日：2018-03-02

Applicant: Rosemount Inc.

Inventor： Jeffrey Charles Andle ,  Jonathan P. Murray ,  David J. Lane ,  Thomas M. Cunneen

IPC: G01R31/14 ,  G01R31/12 ,  H02H1/00

Abstract: A method of detecting a partial discharge in an electrical asset includes sensing of a discharge current in the electrical asset using a transducer and responsively providing a transducer output; processing the transducer output by comparing the transducer output to a baseline; calculating an accumulated amount by which the transducer output exceeds the baseline; decreasing the accumulated amount with time; detecting partial discharge in the electrical asset based upon the accumulated amount; and providing an output related to detected partial discharge. A partial discharge detection system for detecting a partial discharge in an electrical asset includes a transducer configured to receive a signal from the electrical asset generated due to an occurrence of partial discharging in the electrical asset and responsively providing a transducer output. Processing circuitry compares the transducer output to a baseline, calculates an accumulated amount by which the transducer output exceeds the baseline, decreases the accumulated amount with time, and detects partial discharge in the electrical asset based upon the accumulated amount. Output circuitry provides an output related to detected partial discharge.

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.

公开(公告)号：US11415620B2

公开(公告)日：2022-08-16

申请号：US15910106

申请日：2018-03-02

Applicant: Rosemount Inc.

Inventor： Jeffrey Charles Andle ,  Jonathan P. Murray ,  David J. Lane ,  Thomas M. Cunneen

IPC: G01R31/14 ,  G01R31/12 ,  H02H1/00

Abstract: A method of detecting a partial discharge in an electrical asset includes sensing of a discharge current in the electrical asset using a transducer and responsively providing a transducer output; processing the transducer output by comparing the transducer output to a baseline; calculating an accumulated amount by which the transducer output exceeds the baseline; decreasing the accumulated amount with time; detecting partial discharge in the electrical asset based upon the accumulated amount; and providing an output related to detected partial discharge. A partial discharge detection system for detecting a partial discharge in an electrical asset includes a transducer configured to receive a signal from the electrical asset generated due to an occurrence of partial discharging in the electrical asset and responsively providing a transducer output. Processing circuitry compares the transducer output to a baseline, calculates an accumulated amount by which the transducer output exceeds the baseline, decreases the accumulated amount with time, and detects partial discharge in the electrical asset based upon the accumulated amount. Output circuitry provides an output related to detected partial discharge.