For distribution network operators, a quick location of a MV cable fault, either a direct complete fault or a self-healing (or intermittent) fault, will contribute to reduce the outages both in duration and frequency. The earlier applied PD location technique is extended to capture also faults based on first arrival of the associated transients. This fault pinpointing is possible for any MV power cable type within 1% of the cable length, independent of the network grounding and whether a fault is a result from test cases and a real captured field fault.
Guarding MV cables online
With travelling wave-based temperature monitoring, fault location, PD location and PD-related remaining life aspects.