Fault Location On 500 KV Overhead Transmission Lines Through Real Synchrophasor Data

The paper is dedicated to fault location on 500 kV overhead transmission lines based on current and voltage synchrophasors captured under fault conditions. Unlike many publications on the same topic, this research has been conducted with real synchrophasor archives collected from three 500 kV lines in the Russian power grid during four different single line-to-ground faults. We have analyzed quite a few well-known fault location expressions in an unusual scenario of taking in current and voltage data from phasor measurement units, all configured as M class devices according to IEEE C37.118. The main outcome of the obtained numerical data is that the fault location error of less than 1 % was achieved in all of the examined practical scenarios, often by a few fault location expressions at once. This is despite having long enough M class filters and utilizing current signals from measuring transformers that could saturate during a fault. The results are therefore valuable for future synchrophasor application roadmaps.