Electric protection systems and methods

    公开(公告)号:US11108221B2

    公开(公告)日:2021-08-31

    申请号:US16830586

    申请日:2020-03-26

    发明人: Yannick Neyret

    IPC分类号: H02H7/00 H02H1/00 H02H7/26

    摘要: Electrical protection systems and methods, of which an exemplary method comprises: measuring a voltage and an electric current in an electric link; calculating, repeatedly, from the measured values of current, a first moving average and a second moving average, the second moving average being calculated over a duration longer than the first moving average; comparing the measured voltage value with a predefined voltage threshold value; comparing the current value of the first moving average with the current value of the second moving average; and identifying a condition of trigger of the protection device when the measured voltage value is lower than the predefined voltage threshold value for a duration longer than a predefined duration threshold and when the current value of the first moving average is higher than the current value of the second moving average.

    Method and device for detecting the tripping of a disconnection unit, and electrical enclosure comprising such a device

    公开(公告)号:US11774500B2

    公开(公告)日:2023-10-03

    申请号:US17331830

    申请日:2021-05-27

    IPC分类号: G01R31/327 H02H1/00

    摘要: A method for detecting a tripping of a disconnection unit in an electrical enclosure, the electrical enclosure including at least one disconnection unit for disconnecting electric current and at least one switching unit for switching the electric current, the method including a learning phase configured to generate decision-making categories associated with an acoustic signature of the tripping of the at least one disconnection unit, and a phase of detecting the tripping of the disconnection unit, including:



    acquiring a unit noise signal generated by at least one of the disconnection units for disconnecting the electric current or at least one switching unit for switching the electric current, and
    comparing the unit noise signal with the decision-making categories in order to detect whether the unit noise signal corresponds to the tripping of the disconnection unit.