The breaker-oriented substation model adds a new level o
detail in the network model, based on which the protection
system schemes for various power system components can be
introduced into the network model. For instance, two
sysroducedintotheneteorkmodesign.a
examples of the protection system design are shown in Figure
line
1. Protection systems 1 and 2 are to protect transmission l r
LI and Bus B, respectively. Major constituents in these two
protection systems include current transformers (CT1 to CT4)
a voltage transformer (VT), relays (Ri and R2), and circuit
breakers (CB 1 to CB4) associated with trip coils (TC 1 to
TC4). The detailed substation and protection system models
make it possible to study the impact of protection systems on
powe sysem prforance Spcifially in his ork,
'
The breaker-oriented substation model adds a new level o
detail in the network model, based on which the protection
system schemes for various power system components can be
introduced into the network model. For instance, two
sysroducedintotheneteorkmodesign.a
examples of the protection system design are shown in Figure
line
1. Protection systems 1 and 2 are to protect transmission l r
LI and Bus B, respectively. Major constituents in these two
protection systems include current transformers (CT1 to CT4)
a voltage transformer (VT), relays (Ri and R2), and circuit
breakers (CB 1 to CB4) associated with trip coils (TC 1 to
TC4). The detailed substation and protection system models
make it possible to study the impact of protection systems on
powe sysem prforance Spcifially in his ork,
'
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