Cable external force damage early warning and diagnosing device based on vibration signal monitoring

Abstract

The invention discloses a cable external force damage early warning and diagnosing device based on vibration signal monitoring. The cable external force damage early warning and diagnosing device comprises distributed wireless vibration sensors and an upper computer receiver, wherein the distributed wireless vibration sensors are installed at different positions on a cable body in a channel at certain intervals. The wireless vibration sensors are used for collecting external force intrusion vibration signals in a cable operation process and outputting the vibration signals to the upper computer receiver; and the upper computer receiver is used for receiving the vibration signals transmitted by the wireless vibration sensors, performing vibration mode analysis, and displaying the current early warning level and the early warning mode. According to the device in the invention, vibration signals generated by external force invasion of cables in the cable channel are mainly used as monitoring objects, the vibration amplitude of the cables is monitored in real time, mode analysis and early warning are carried out on the upper computer, and the device has the advantages that the real-time performance is high, the early warning accuracy is high, the anti-jamming capability is high, the fault category is determinable, and the like.

Description

technical field [0001] The invention relates to a cable external force damage early warning and diagnosis device based on vibration signal monitoring, which belongs to the technical field of online monitoring and fault diagnosis of power cables in power transmission systems. Background technique [0002] At present, there are more and more urban reconstruction and construction. Because the overhead lines in the city affect the beauty of the city and cause threats to people and vehicles on the ground when they fail, it is a common practice for distribution network construction to replace overhead lines with cables and bury them underground. chemical work. Compared with overhead wires, power cable transmission does not occupy ground space, and the same underground cable channel can accommodate multiple circuits, which is conducive to the neat and beautiful appearance of the city, is less affected by natural meteorological conditions and the surrounding environment, and is safe...

AI Technical Summary

Problems solved by technology

The limitations of the above factors make it difficult for fiber optic vibration measurement to be used for vibration detection applications in large-scale power cable systems

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