Research Article

Hybridized Symbiotic Organism Search Algorithm for the Optimal Operation of Directional Overcurrent Relays

Table 1

Optimal values of design variables, objective values, and function evaluations obtained by SASOS, DE, and modified DE: IEEE 3-bus system.

ā€‰NFE

DE0.050.21940.050.21350.194980.19531.251.251.25001.46051.251.254.842278360
MDE-10.050.21780.050.20900.18120.18071.251.251.251.49991.51.49994.8070772350
MDE-20.050.19790.050.20940.18470.18271.251.49991.251.49991.43181.46194.787373350
MDE-30.050.19880.050.20900.18120.18071.251.48491.251.49991.49981.49994.782297550
MDE-40.050.19760.050.20900.18120.18061.251.49991.251.49991.49991.49994.780669270
MDE-50.050.19760.050.20900.18120.18061.251.51.251.51.51.54.780638250
SASOS 0.050.2071610.050.301550.2034660.0912951.443871.251.2525551.2656681.25001.3593824.720131500