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ravipra01
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Join Date: Oct 2006
Location: Hyderabad,India
Posts: 49

Vector group of a transformer

04/14/2007 12:52 AM

Sir How to decide the vector group of a transformer while hooking up to the grid ?Suppose a 25MW generator is generating power at 11kV and the same needs to be hooked up to a 220kV grid,thru a 11/245kV generator transformer,then how do we decide the vector group of the generator transformer.Pl advise. regards
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Grage Tesla
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Peru - Member - New Member Engineering Fields - Biomedical Engineering - New Member Popular Science - Genetics - New Member Fans of Old Computers - Commodore 64 - New Member

Join Date: Nov 2006
Location: Perú
Posts: 111
#1

Re: Vector group of a transformer

04/15/2007 3:23 AM

P = V x I x CosΦ

V1 = 11,000.00 V

P = 25,000,000.00 W

I1 = 2,840.91 A CosΦ=0.8(Aprox)

V2 = 245,000.00 V

P = 25,000,000.00 W

I2= 127.55 A CosΦ=0.8(Aprox)

nV = (245 / 11) = 22.27

nI = (2,840.91 / 127.55) = 22.27

¿Esto es lo que estas preguntando?

__________________
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ravipra01
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Join Date: Oct 2006
Location: Hyderabad,India
Posts: 49
#2
In reply to #1

Re: Vector group of a transformer

04/16/2007 12:45 AM

Sir I cld not understand the answer.Pl explain. regards
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Anonymous Poster
#3

Re: Vector group of a transformer

04/17/2007 2:00 AM

To know the vector group of the transformer you have to see the winding of the transformer inside then only you can identify the vector group.
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