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HOMETransmission LinesCables |
For first choice, only positive sequence values are needed.
Ground must be node # 1.
Voltage of node # 1 must be entered as 1 kV to the program. Note that the actual value is zero.
Note that for element number 1 node P should be taken as 1.
All motors are either delta or unearthed star.
This includes all types of switches and circuit-breaker.
Impedances are on transformer ratings.
On assumption that the
tertiary winding is delta connection.
If S.C. MVA is not available, use the following values :
|
Maximum Nominal Grid
Voltage (kV) |
Short Circuit Level
(MVA) |
|
6.6 : 24 36 36 : 72.5 72.5 : 123 123 : 170 170 : 245 300 420 |
500 1000 3000 6000 10 000 20 000 30 000 40 000 |
When delta connection is used, equivalent star values must be used.
Such as series capacitor, reactor or filter.
Transformers are not
included.
Lines can be considered.
Cables
