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公开(公告)号：EP3993204A1
公开(公告)日：2022-05-04
申请号：EP20204229.7
申请日：2020-10-28
摘要： A method for determining a location of a fault (16) on a powerline (11), comprising: obtaining, using a measuring device (15) at a measurement location on the powerline (11), time-dependent data of a voltage on the powerline (11) and of a current through the powerline (11) at the measurement location, wherein the time-dependent data is obtained during a time period after fault inception; removing fundamental frequency components from the time-dependent data; calculating, from the time-dependent data, a virtual fault inductance for at least two different potential fault locations, by inputting the time-dependent data into an equivalent circuit model, by means of time-domain calculations on the nonfundamental frequency waveform components; and deriving, from the virtual fault inductance for each of the potential fault locations, a location on the line at which the virtual fault inductance is substantially zero.
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