Diagnostics for MV cables and switchgear as a tool for effective asset management

The introduction of diagnostics into the maintenance and operation of high voltage plant should show clear benefits if it is to be a useful tool in running a competitive electricity distribution company. This paper shows that the potential is certainly there, but some investment is required if the potential is to be realized. In a regulated business, this may be one of the essential tools in cost reduction and hence in competitive advantage. The examples of diagnostic methods applied to a network, come from London’s 11kV cable network.