LV Underground Cable Fault Management

Apr 2013

Electricity Distribution

Reference:

Status: Live

Start Date: Apr 2013

End Date: Unknown

Funding Licencee(s): UK Power Networks

Contact: UKPN Innovation Team

Funding Mechanism Innovation Funding Incentive

Research Area: None

Core Technology(ies): LV & 11kV Networks

Estimated Expenditure: £448,928.00

Introduction: UKPN identified opportunities to improve the detection and location of intermittent faults on LV underground cables.

This project combined the use of an intermittent cable fault location device (T-P22) with an improved re-energisation device (REZAP Fault Master) so that LV intermittent faults can be better managed and customer interruptions reduced.

Objectives: The project has developed the following techniques:

Time reflection to determine fault location
Transient impedance fault location
Travelling wave fault location
An auto reclosing device.