Novel fail-safe earth-fault protection schemes for underground coalmines using restricted-neutral system of power supply
1982 ◽
Vol 129
(1)
◽
pp. 35
1979 ◽
Vol 126
(2)
◽
pp. 149
Transmission line fault location for single-phase-to-earth fault on non-direct-ground neutral system
1998 ◽
Vol 13
(4)
◽
pp. 1086-1092
◽