Method and device for determining a section with the failure of a power supply line

摘要

Abstract invention patent: "identification and location of fault in a power supply line, which is fed from a side.The present invention relates to a method for determining a section with the failure of a power supply line (10a) which is fed from one side and which is divided into a plurality of sections (14a C) for switching devices (13a) - (d), in which each device of Toggle Tion (13a) - (d) has a measuring device associated (15a) - (d).To make the method more sensitive and reliable as possible, the invention proposes that the following steps are performed in the method: each measuring device (15a) - (d) detects a current signal in a measure point (16a - (d) which is provided in the region of the respective device of comutau00e7u00e3 The (13a) - (d),And the said current signal indicates a current flow in the respective measure point (16a - (d), sampling the current signal to form the values of the sample current, and determines a variable measure of current from the values of the sample current.Each measuring device (15a) - (d) form a value chain Delta as the difference between a variable measure of peak current and a variable measure of current before it was determined a fixed number of periods of the current signal, compares the value of the current Delta With a threshold value chain and identifies a jump in the current.When that identify a jump in the current; and a tracking device failure identifies a failure as being present in the section (14a - (c) of the line of the power supply (10a) which is bounded at one end by a switching device (13a - (d) of which the device ' Dida (15a) - (d) identified a jump in the current.And is bounded on its other end by a switching device (13a - (d) of which the measuring device (15a) - (d) did not identify a jump in the current. The invention relates to a device to measure corresponding.