Decentralized earth fault selectivity using transient front slopes for unearthed MV networks
Differentiating the residual current waveforms extracted the earth fault surge slopes. The relative polarities of the transient slopes discriminated the faulty section. They also decided the fault direction at the secondary substation. The proposed selectivity function is integrated with the decentralized control for distribution networks.
earth faults selectivity function unearthed/compensated mv networks decentralized fault management