Cable Condition Monitoring System

This paper presents the research and development of an integrated high voltage hv power cable condition monitoring and fault localization system.

Cable condition monitoring system.

Distributed temperature sensing has applications in both monitoring by alerting users to any critical faults in networks but also sensing of abnormal conditions ranging from fire detection to cable security. The system consists of the functionalities of online dielectric loss dl monitoring outer sheath and earthing system condition monitoring and a rapid fault localization system all based on monitoring of cable sheath currents. A cable is simply made of a conductor wrapped in one or more layers of insulation material. A key feature of das is the ability to immediately detect and locate cable faults.

With conventional systems a sensor is needed for each point of interest. Condition monitoring technique are presented along with a general discussion on the various properties of electric cable insulation that can be monitored to assess the condition of an electric cable and the dielectric integrity of cable insulation systems. Condition monitoring for power cables often entails a manual periodic inspection process. An ap sensing distributed acoustic sensing das system is monitoring a 6 km high voltage power cable in germany.

While testing conductors connectors and end devices is performed in response to specific operational problems cable condition monitoring is performed to identify degradation in cable insulation material and for cable aging assessment and remaining useful life prediction.