Electric power system protection 9 Electric power distribution 3 Technology: general issues 3 Complex networks 2 Electric network analysis 2 Heuristic methods 2 History of engineering & technology 2 Particle swarm optimization (PSO) 2 Relay protection 2 distribution network 2 'current 1 Accurate calculations 1 Aggressive environment 1 Algorithm methods 1 Binary particle swarm optimization 1 Breakpoint 1 Busbar splitting 1 Busbars 1 Buses 1 Cascading failures 1 Classic models 1 Comparative studies 1 Computer circuits 1 Condition 1 Critical power systems 1 Critical systems 1 Current protection 1 Data generation 1 Directional overcurrent protection 1 Directional overcurrent protection relay 1