Extraction method of micro defect feature information of cluster cable

Cluster cable is related to the operation safety of large-scale power system. Its working environment is narrow and hidden, and hidden faults are difficult to detect and diagnose. It is the key factor leading to the abnormal state of complex equipment and occasional faults. Aiming at the problem that it is difficult to detect the sudden fault of cluster cable and the diagnosis is easy to be missed and misdiagnosed, especially the situation that the deep defect is difficult to detect and leads to the accident, this paper mainly focuses on the internal micro failure analysis of the unit structure, establishes the internal defect signal detection device of cluster cable, and puts forward the effective weak signal extraction method, defect feature discrimination technology, the formation of a scientific hidden fault detection method for cluster cables and the separation and extraction of micro defect failure characteristics will not only help to break through the technical bottleneck that cluster cables are difficult to predict early faults and prone to missed detection and false diagnosis, but also have positive theoretical significance and application value for accurately evaluating the overall reliability level of equipment and ensuring the safe operation of large-scale power system.(c) 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).