Abstract
The simplified fault location method which is described in this paper is tested at HVDC submarine cable test yard located in KEPCO Power Testing Center of Korea. The total length of tested submarine cable is 194 m, and it has 4 earth points, each point is grounded between shield layer and seawater under the sea respectively. The tested fault location method uses the time delay of the travelling wave signals reflected from the fault point. Firstly, the signals are measured by oscilloscope at the end of test cable when the grounding fault occurs on the system, then the distance to fault point can be calculated using the time delay of the first two signal and propagation velocity.
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