Vertical Transition Straight Joints Innovative Inspection

The project will develop an innovative product that will define the bandwidth at which HV cable joints fail. It is planned that this will be determined by performing the following activities:

PD data collection on HV cable joints within substations in LPN
Analysis of PD data to have a better understanding of partial discharge in cable joints
Retrieval of defective joint(s) for forensic analysis in the laboratory to have a better understanding of joint failure and to provide confidence in the reliability and performance of detection system
Data collected as part of the IFI project “Cable Pit Mitigation Strategy” will also be utilised
A final product “Canary” will be developed which will be used to monitor the health of HV cable joints within substations and cable pits to identify high risk sites for controlled repair/replacement.

Benefits

The success of the project will be judged against the four objectives described below:

Successful collection of PD data capture from a number of sites with HV cable joints
Analysis of PD captured data to define the bandwidth at which HV cable joints are at higher risk of failure
Retrieval of HV cable joint(s) where PD readings are deemed to be defective for forensic analysis in the laboratory
Development of a new product (“Canary”) that can be used for monitoring the health of HV cable joints and cable pits to detect those with high partial discharge for their controlled replacement

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