METHOD AND DEVICE FOR DETECTING A FAULT IN AN ELECTRICAL NETWORK
    1.
    发明申请
    METHOD AND DEVICE FOR DETECTING A FAULT IN AN ELECTRICAL NETWORK 审中-公开
    用于检测电气网络故障的方法和装置

    公开(公告)号:US20160370414A1

    公开(公告)日:2016-12-22

    申请号:US15170147

    申请日:2016-06-01

    IPC分类号: G01R31/02 G01R23/06

    摘要: The invention relates to a method for detecting a fault in an electrical network (1) through which an AC current flows, the method comprising a step of acquiring three samples (S1, S2, S3) of a sinusoidal signal (S) that is representative of the current flowing in the network (1), the acquisition of each sample being spaced apart by a fixed sampling time (T), a step of calculating an amplitude (A) of the signal (S), the calculation of the amplitude (A) depending solely on the three acquired samples (S1, S2, S3) and being independent of the sampling time (T), a step of determining a fault if the calculated amplitude (A) is above a first predetermined threshold or if the calculated amplitude (A) is below a second predetermined threshold.

    摘要翻译: 本发明涉及一种用于检测交流电流流过的电网(1)中的故障的方法,所述方法包括以下步骤:获取代表性的正弦信号(S)的三个采样(S1,S2,S3) 在网络(1)中流动的电流中,每个采样的采集间隔一固定采样时间(T),计算信号(S)的振幅(A),振幅( A)仅依赖于三个采集的采样(S1,S2,S3)并且独立于采样时间(T);如果所计算的幅度(A)高于第一预定阈值,则确定故障的步骤,或者如果所计算的 振幅(A)低于第二预定阈值。

    DETECTING A FAULT, IN PARTICULAR A TRANSIENT FAULT, IN AN ELECTRICAL NETWORK
    3.
    发明申请
    DETECTING A FAULT, IN PARTICULAR A TRANSIENT FAULT, IN AN ELECTRICAL NETWORK 审中-公开
    检测故障,特别是瞬态故障,在电气网络中

    公开(公告)号:US20150233994A1

    公开(公告)日:2015-08-20

    申请号:US14627201

    申请日:2015-02-20

    IPC分类号: G01R31/02 G01R23/02

    摘要: In order to determine the occurrence of a fault, notably transient, in an electrical distribution network, a method and a device are developed based on the determination of the frequency (f) of the current signal circulating in a phase of the network. Notably, the difference between the determined frequency (f) and the natural frequency (f0) of the network is compared to a threshold.

    摘要翻译: 为了确定配电网络中故障的发生,特别是短暂的情况,基于在网络的相位中循环的当前信号的频率(f)的确定来开发方法和装置。 值得注意的是,确定的频率(f)和网络的固有频率(f0)之间的差异与阈值进行比较。