I need to model a 80MVA transformer 132/33kV built in 1973. There is very little information on this transformer but I need to populate certain values in the model.
Where can I find typical zero sequence impedance values for this type of transformer?
The positive sequence impedances are as follows:
- HV – MV = 15%
- HV – LV = 22.9%
- MV – LV = 4.9%
Here is the information given:
And the fields which need to be populated: