For large power cable assets such as subsea cables, windfarm export cables or HV onshore transmission cables, finding cable faults rapidly is crucial to minimizing downtimes caused by these faults. Fiber optic Distributed Acoustic Sensing (DAS) is a key enabler for this task, as it pinpoints the exact location of an occurring cable fault if permanently installed or post-fault during thumping / flashover generation campaigns.
When permanently installed as an online monitoring system, our solution eliminates the need to mobilize test equipment and crews. DAS technology also alleviates the location inaccuracy inherent in existing electronic fault-finding methods; additionally, if a fault is caused by a third party, the DAS
system assists in tracing the event back to the responsible party.