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Step4: Structure settings [Zone_CH*], etc.
Step4-0:Zone definitions
3.4.1
Four basbars are structured in the single line diagram (Figure 3-1), so a protection zone
(among ZoneA to ZoneF) has to be selected for Busbar-W1, W2, E1, and E4. There is no rule to
select a zone. For an example, four zones are selected for busbars: Busbar-W1＝ZoneA, Busbar-
W2＝ZoneB, Busbar-E1=ZoneC, Busbar-E2＝ZoneD.
Busbar-W1
Busbar-W2
Figure 3-2 Protection zones partitioned with North and South sections
Step4-1:Feeder definitions
3.4.2
CH1, assigned on West Feeder, is ready to protect ZoneA and ZoneB. Table 3.4-1
also shows that the other settings items are given depending on its feeder
conditions.
CH7, assigned on East Feeder, is ready to protect ZoneC and ZoneD. The other
setting items are also set.
Setting items
CH1
On
[CH use_CH*]
West
[CH name_CH*]
Feeder
Feeder
[BayDevice_CH*]
1(NA)
[Coupler No_CH*]
ZoneA
[Zone1_CH*]
ZoneB
[Zone2_CH*]
Non
[Zone3_CH*]
Non(NA)
[ZoneR1_CH*]
Non
[Zone-NoDIF_CH*]
DirConn
[CB_CH*]
NO
[DS11_CH*]
or
NC or Both
NO
[DS12_CH*]
or
NC or Both
Non
[DS13_CH*]
DirConn
[DS21_CH*]
Non
[Line1_CH*]
Non
[Line2_CH*]
Non
[Line3_CH*]
POS1
[CT-POS_CH*]
[ZACbyCB_CH*]
North section
South section
Table 3.4-1 Settings on Step4-0 and Step4-1
CH2
CH3
On
On
West Coupler
Coupler
1
- 22 -
Busbar-E1
Busbar-E2
CH4
CH5
CH6
On
On
On
North
South Section
Section
Coupler
Coupler
2
3
6F2S1923 (0.03)
CH7
CH8 to CH24
On
Off
East Feeder
(no settings)
Feeder
Non
1(NA)
1(NA)
ZoneC
ZoneD
Non
Non(NA)
Non
DirConn
NO
or
NC or Both
NO
or
NC or Both
Non
DirConn
Non
Non
Non
POS1
GRB200C (Replica)
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