automation terminals for a power distribution network, failure type determination method for it, power distribution system and machine readable media

摘要

The present invention relates to a failure type determination method and a terminal unit device for automation used in the power distribution network; where the method comprises: for each line (li) between the input lines and the output lines of a distribution device, record the number of faults (nfi) that occur on the line; after a fault has occurred, determine, according to the current and / or voltage of each line (li), whether an automatic close is performed, and record the number of automatic close (nr) performed; determine, in a failure type determination period (nrj) for each line (li), whether the number of failures (nfi) that occur in line (li) is greater than the maximum allowed number of automatic closures (nrm) per part of a transformer substation, or if the fault is a repeated fault (sfi = 1), and in that case identify the fault in line (li) as a permanent fault.