Standardisation, prequalification, diagnostics, as part of cable system management

Reducing costs, postponing investments, exceeding common limitations in exploiting the network assets, while still keeping up reliability and power quality standards-these are the key words in a liberalised electricity market. To be able to operate with less costs, to postpone investments to a later date and even to be able to uprate cable circuits, new approaches has been made in the Netherlands for: (pre)qualification of cable and accessory suppliers for low voltage, medium voltage and high voltage has been developed; diagnostics as part of condition based management (CBM) on power cable circuits; making ampacity calculations to be based on the actual installed thermal situation of the cable; and the role of standardisation. These different subjects are discussed in this paper