Simultaneous Partial Discharge and Tan Delta Measurements: New Technology in Cable Diagnostics

摘要

In this paper, a focus was placed on the ability to decrease the amount of testing time while monitoring tan delta and PD simultaneously. Healthy and unaged cables do not need to be subjected to unnecessary stresses if no clear abnormalities are detected in diagnostic values. A case study was presented and able to show that testing time and costs can also be reduced for severely aged cable systems. New technology on the market allowing for the simultaneous monitoring of tan delta and partial discharge during monitored withstand testing gives utilities and test personnel time-efficient and cost-optimized testing solutions for new and service-aged cables. The result is a significant reduction in testing time and the ability to realize condition-based and cost-optimized maintenance plans.