Fault location in meshed power networks by using hybrid sparse current and voltage measurements along with RSFCL

In this study, the problem of an accurate fault location in the transmission line is addressed. The proposed solution is based on sparse current and voltage measurements along with a resistive superconducting fault current limiter (RSFCL). In the proposed technique, the phasor current of non-faulty lines and the faulty line voltages are used. The proposed scheme has the following salient features; (1) no load flow information is needed, (2) it is robust against fault impedance and load variation, (3) improves the fault location accuracy by limiting the effect of CT saturation by using RSFCL along with the current measurement. IEEE 14-bus and two-area 4-bus systems have been used to verify the performance of the proposed technique. It is noticeable from the results that the technique proposed in this manuscript successfully locates the transmission line faults under different circumstances. Finally, the results obtained with the proposed technique are compared with the existing techniques. It is evident from the comparison results that the accuracy of the proposed technique is better than existing ones in the literature. •Synchronized sparse current measurements and voltage measurements along with RSFCL used to find the fault location.•No load flow information is needed•Robust against fault impedance and load variation.•Encounters the effect of current transformer saturation.