| Abstract: |
| In long transmission lines, the charging current caused by the shunt capacitance decreases the accuracy in
impedance based fault location. To improve the accuracy of fault location, this paper presents a novel scheme,
where two Digital Fault Recorders (DFRs) are installed in a line. They can send the transient data of the faults to the
both ends of a line. To estimate the distance of a fault, impedance based fault location methods are applied with
transient fault data of both ends protection relays and both DFRs installed in a line. To evaluate the proposed
scheme, a laboratory setup has been developed. In the lab, several faults have been simulated and associated
voltages and currents are injected to a relay IED to compare experimental results. |
| Key words: Transmission line fault location, Impedance based fault location |
| DOI：10.1186/s41601-017-0048-y |
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| Fund: |
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