Health Monitoring of cables using Acoustic Emission Measurement Techniques
National Grid Electricity Transmission
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Network Innovation Allowance
ET - Transition to low carbon future
Active Network Management
National Grid’s transmission network consists of many kilometres of cables across Great Britain. The entire network needs to function at a very high level of reliability to ensure an undisrupted electrical supply for consumers. The routine inspection of each individual component to ensure mechanical, structural and electrical performance is an essential, but expensive and time consuming process; especially for cable systems, which are mostly submerged below ground.
Cables and their accessories are subjected to mechanical loading during their time in service. Some failure mechanisms within cable systems are purely mechanical (such as longitudinal splitting of the over-sheath, thermomechanical damage, and mechanical fatigue near cleats) and are often a precursor to electrical failure. Being able to detect the mechanical failures would provide more lead time to manage the assets and take mitigating action.
The aim of this project is to demonstrate the capability of Acoustic Emissions for the monitoring of cables within a laboratory based environment. On completion of the work, the team will be aware of the requirements necessary to scale-up and apply the developed technique.
The goal of this project is to demonstrate the capability of AE for the monitoring of cables within a laboratory based environment. On completion of the work, the team will be aware of the requirements necessary to scale-up and apply the developed technique.