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    Fault diagnosis and preliminary location system and method for transformer core looseness
    1.
    发明申请
    Fault diagnosis and preliminary location system and method for transformer core looseness 有权
    变压器铁芯松动故障诊断及初步定位系统及方法

    公开(公告)号：US20140118003A1

    公开(公告)日：2014-05-01

    申请号：US14128603

    申请日：2012-07-19

    申请人： Kai Chen ,  Chunning Wang ,  Hongzhong Ma ,  Kai Li ,  Yiming Wu ,  Ying Zhang ,  Hongtao Liu ,  Peng Gao ,  Taotao Chen

    发明人： Kai Chen ,  Chunning Wang ,  Hongzhong Ma ,  Kai Li ,  Yiming Wu ,  Ying Zhang ,  Hongtao Liu ,  Peng Gao ,  Taotao Chen

    IPC分类号： G01R31/02

    CPC分类号： G01R31/027 ,  G01H1/00

    摘要： This invention publishes a fault diagnosis and location system for transformer core looseness, consists of vibration sensors, data collection and computer. It is of power transformer fault intelligent diagnosis technology technical field. Fault diagnosis and location method uses three vibration sensors positioned on the top of transformer tank, to obtain vibration signal, uses signal processing to analyze the signal, and obtains fault characteristics of the transformer core looseness. The characteristics respectively are 50 Hz, 150 Hz and 300 Hz frequency components, in which 300 Hz is main feature. When they reach a certain value at one position, it suggests that transformer core looseness near this position. By the comparison of differences among signals of three positions, fault location can be done. This invention manifests fault characteristics accurately and detects core looseness efficiently.The invention uses the electricity grid frequency of 50 Hz for example, for 60 Hz power system, above 50 Hz, 150 Hz, 300 Hz characteristic frequencies are 60 Hz, 180 Hz and 360 Hz.

    摘要翻译： 本发明公布了变压器磁芯松动故障诊断定位系统，由振动传感器，数据采集和计算机组成。 是电力变压器故障智能诊断技术技术领域。 故障诊断和定位方法采用位于变压器箱顶部的三个振动传感器，获得振动信号，采用信号处理分析信号，获得变压器磁芯松动的故障特征。 特性分别为50Hz，150Hz和300Hz频率分量，其中300Hz为主要特征。 当它们在一个位置达到一定值时，表明变压器芯在这个位置附近松动。 通过比较三个位置的信号之间的差异，可以进行故障定位。 本发明精确表现了故障特征，有效地检测了磁芯的松动。 本发明使用例如50Hz的电网频率，对于60Hz电力系统，高于50Hz，150Hz，300Hz特征频率为60Hz，180Hz和360Hz。

    Fault diagnosis and preliminary location system and method for transformer core looseness
    2.
    发明授权
    Fault diagnosis and preliminary location system and method for transformer core looseness 有权
    变压器铁芯松动故障诊断及初步定位系统及方法

    公开(公告)号：US09404957B2

    公开(公告)日：2016-08-02

    申请号：US14128603

    申请日：2012-07-19

    申请人： Kai Chen ,  Chunning Wang ,  Hongzhong Ma ,  Kai Li ,  Yiming Wu ,  Ying Zhang ,  Hongtao Liu ,  Peng Gao ,  Taotao Chen

    发明人： Kai Chen ,  Chunning Wang ,  Hongzhong Ma ,  Kai Li ,  Yiming Wu ,  Ying Zhang ,  Hongtao Liu ,  Peng Gao ,  Taotao Chen

    IPC分类号： G01R31/02 ,  G01H1/00

    CPC分类号： G01R31/027 ,  G01H1/00

    摘要： This invention publishes a fault diagnosis and location system for transformer core looseness, consists of vibration sensors, data collection and computer. It is of power transformer fault intelligent diagnosis technology technical field. Fault diagnosis and location method uses three vibration sensors positioned on the top of transformer tank, to obtain vibration signal, uses signal processing to analyze the signal, and obtains fault characteristics of the transformer core looseness. The characteristics respectively are 50 Hz, 150 Hz and 300 Hz frequency components, in which 300 Hz is main feature. When they reach a certain value at one position, it suggests that transformer core looseness near this position. By the comparison of differences among signals of three positions, fault location can be done. This invention manifests fault characteristics accurately and detects core looseness efficiently.The invention uses the electricity grid frequency of 50 Hz for example, for 60 Hz power system, above 50 Hz, 150 Hz, 300 Hz characteristic frequencies are 60 Hz, 180 Hz and 360 Hz.

    摘要翻译： 本发明公布了变压器磁芯松动故障诊断定位系统，由振动传感器，数据采集和计算机组成。 是电力变压器故障智能诊断技术技术领域。 故障诊断和定位方法采用位于变压器箱顶部的三个振动传感器，获得振动信号，采用信号处理分析信号，获得变压器磁芯松动的故障特征。 特性分别为50Hz，150Hz和300Hz频率分量，其中300Hz为主要特征。 当它们在一个位置达到一定值时，表明变压器芯在这个位置附近松动。 通过比较三个位置的信号之间的差异，可以进行故障定位。 本发明精确表现了故障特征，有效地检测了磁芯的松动。 本发明使用例如50Hz的电网频率，对于60Hz电力系统，高于50Hz，150Hz，300Hz特征频率为60Hz，180Hz和360Hz。