8Chen D S, Liu P, Peng H, et al. Analysis of an accelerated trip scheme for faults in the second zone of protection of a transmission line [J]. IEEETransactions on Power Delivery, 1990, 5 (1) :72-78.
9Chen D S, Liu P, Peng H, et al. Accelerated trip scheme for faults in the second zone of protection of a transmission line [J]. IEEE Transactions on Power Delivery, 1989, 4(2) : 942-948.
