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Power / Communication Cable Monitoring

This application includes the monitoring of both underground and overhead power cables. In overhead cable monitoring, wind-induced motion monitoring (known as Aeolian vibration monitoring) is crucial. Underground cable monitoring primarily focuses on external damage monitoring and warning, temperature monitoring, and partial discharge monitoring.

 

Aeolian Vibration Monitoring


By integrating DAS systems into optical fiber composite overhead ground wire (OPGW) cables on overhead transmission lines, the system effectively measures the amplitude and frequency of cable movement, reflecting comprehensive information on cable aeolian vibration events. It responds sensitively to cable aeolian vibration events, accurately locates them, and operates stably under harsh conditions such as strong electromagnetic interference and lightning. This system is suitable for long-distance overhead transmission line aeolian vibration monitoring.

 

External Damage Prevention Monitoring


As underground cables increasingly dominate transmission and distribution systems, safeguarding them against external damage has become a pressing issue for power operation departments. Using DAS technology to monitor vibrations around cables in real-time enables the detection of construction and destructive activities that pose safety hazards to cables. Intelligent signal analysis identifies and alerts personnel to these events, aiding in timely response and maintenance.

 

Partial Discharge Monitoring


Partial discharge is a major fault facing high-voltage cables. During partial discharge, some of the discharged electrical energy converts into sound energy, emitting ultrasonic waves. Online DAS monitoring using optical fibers adjacent to high-voltage cables enables real-time monitoring of cables spanning up to hundreds of kilometers, providing immediate fault alarms and precise location of discharge breakdowns, thereby reducing failure losses and ensuring efficient and reliable cable operation.

 

Communication Cable Monitoring


Urban underground communication optical cables face risks such as construction-related external damage and complex network routing management. Leveraging DAS technology’s long-distance and high-sampling-density characteristics is crucial for monitoring and warning against external damage to urban underground communication optical cables, as well as for accurately locating routing tracking. Based on DAS technology and GIS platforms, integrating fiber monitoring, alarms, fault analysis, routing tracking, fault management, line maintenance and management ensures the safe and efficient operation of urban underground fiber optic networks.