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Transformer's Temperature

Transformer's Temperature

Transformer's Temperature

(OP)
Hi ,

i am asking about transformer's temperature

There is any correlation between the Winding's temperature and (Var) which generated by the Generator?

for instance i have to case with same ambient temperature :-
the first, i generate (150MW) with (5Mvar)
the second, i generate (150MW) with (15Mvar)

there is any difference on the winding's temperature for the transformer?

with regards

RE: Transformer's Temperature

the first, i generate (150MW) with (5Mvar) -- 150.08 MVA
the second, i generate (150MW) with (15Mvar) -- 150.75 MVA
= 1.00446 greater current, 1.009 greater I2R losses

there is any difference on the winding's temperature for the transformer? Probably not enough to measure.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Transformer's Temperature

Transformer winding temperature solely depends on the current ie only on MVA and not on MW.

RE: Transformer's Temperature

So a difference will be certainly there. However small difference it may be!!!

RE: Transformer's Temperature

Calculate your MVA. With constant voltage the MVA determines the current and the I2R heating.

Bill
--------------------
"Why not the best?"
Jimmy Carter

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