Third, bus configuration impacts the tolerance of the
system to BF protection misoperations. Substations with dualbreaker
terminations arranged as breaker-and-a-half or doublebus
double-breaker are less affected by an unwarranted BF
trip—with one bus lost, the network elements are still
energized via the other bus. In such cases, security of the BF
system is not as critical as in the single-bus single-breaker
arrangement, for example.