Transformer impedance
Transformer impedance
(OP)
Dear all,
To calculate short-cisruit current, we collected transformer impedance from Power company. But the one we got was from 3-winding tranformer (110kV/35kV/22kV) so it was availabe with 3 impedance voltages (P_S side/ P_T side/ and S-T side). Power is supplied to 110kV and derived from 22kV (we will use this voltage). As consulted, I should select the impedance voltage from P_T side but I am still in dout.
Could you shed a light on this case.
Regards,
Hien
To calculate short-cisruit current, we collected transformer impedance from Power company. But the one we got was from 3-winding tranformer (110kV/35kV/22kV) so it was availabe with 3 impedance voltages (P_S side/ P_T side/ and S-T side). Power is supplied to 110kV and derived from 22kV (we will use this voltage). As consulted, I should select the impedance voltage from P_T side but I am still in dout.
Could you shed a light on this case.
Regards,
Hien






RE: Transformer impedance
RE: Transformer impedance
RE: Transformer impedance
Bill
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"Why not the best?"
Jimmy Carter
RE: Transformer impedance
I confirmed two Electrical Vendor. They said I should use P-T side's impedance voltage. They did not mention if the P-S side in use or not. So, I still in dout about their information.
Have you ever dealed with this? Please give me your advice.
Regards
Hien