External force damage resistance early warning method and device for transformer substation underground cable on the basis of acoustic array sensing technology

Abstract

The invention relates to the technical field of electric power, and discloses an external force damage resistance early warning method and device for a transformer substation underground cable on thebasis of an acoustic array sensing technology. A high-sensitivity vibration sensor can be used for judging whether the surrounding construction of a transformer substation is legal or not; then, through a high-sensitivity acoustic positioning sensor, the acoustic fingerprint of a digging activity which may damage an underground cable is subjected to real-time detection and early warning; and on the basis of a head video, a field working condition is subjected to auxiliary checking. By use of the method and the device, the external force damage type and direction of the underground cable can beaccurately and effectively detected and judged, external force which may cause damages can be subjected to timely detection and real-time early warning, an early warning signal is given through an upper monitoring warning host through means, including loudspeaker voice, warning and the like, and therefore, the problem that the underground communication cable is always damaged by external force construction appliances is effectively solved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to an early warning method for preventing external breakage of buried optical cables in substations based on acoustic array sensing technology. Background technique [0002] At present, the construction of substation infrastructure is accelerating, and substation renovation, expansion, and construction projects are increasing; the power optical cables laid in the early stage, or the completion data are incomplete, or the line relocation has not been corrected in time; the construction personnel do not have this awareness; External force damage occurs from time to time, resulting in serious optical cable communication accidents and causing heavy losses in substations. The traditional prevention of external damage to optical cables relies on manual regular inspections. Manual inspections are passive protection. Buried optical cables cover a wide area and cannot be fully covere...

AI Technical Summary

Problems solved by technology

[0002] At present, the construction of substation infrastructure is accelerating, and substation renovation, expansion, and construction projects are increasing; the power optical cables laid in the early stage, or the completion data are incomplete, or the line relocation has not been corrected in time; the construction personnel do not have this awareness; External force damage occurs from time to time, resulting in serious optical cable communication accidents and causing heavy losses in substations

The traditional prevention of external damage to optical cables relies on manual regular inspections. Manual inspections are passive protection. Buried optical cables cover a wide area and cannot be fully covered by manual inspections at all times. Buried optical cables are often damaged by external forces and cause failures. Difficult to locate the fault immediately