5
PSERC
Concept
CFL
MS
PE
EMS
LMS
FL
IS
SC
RC
DFR
IED
DPR
RTU
SOE
A
S
A
S
A
A
S
A
S
A
S
LEVEL
I
CENTRALIZED
LOCATION
LEVEL
II
SUBSTATION
LEVEL
III
SWITCHYARD
INTERFACE