Modelling Of 3 Winding Transformer

Thread Starter

Hafiz Bilal Usman Qureshi

Joined Oct 28, 2013
1
Rated Voltage Network
380 KV
110 KV
30KV

Rated Voltage Transformer
400 KV
120 KV
33 KV

Rated Apparant Power
300 MVA
300 MVA
75 MVA

Impedence Voltage drop
uk 12 18.92%
uk 23 11.08%
uk 31 5.81%

no load current
0.0398%

SIDE 1 :
zero Sequence Short Circuit impedance
R0k 1.538 ohm
X0k 101.3 ohm

zero sequence noload impedance
R00 8.8 ohm
X00 221.6 ohm

SIDE 2 :
zero Sequence Short Circuit impedance
R0k 0.2340 ohm
X0k 4.463 ohm

zero sequence noload impedance
R00 0.73 ohm
X00 9.87 ohm

how can we calculate 3 windings tranformer Admittance ???

Thank you very much for your cooperation .
 
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