DIFFERENTIAL RELAYS 2

[SEFAILI]

Info about we want to protect of Transformer

S : 100 MVA

HV/LV : 154.000 / 33.600 Volt

%Uk : 12,0

Connection: Ynyn0

Primer Side CT : 400 / 5 Amper

Seconder Side CT : 2000 / 5 Amper

do anybody calculate differantial setting values for that transformer ?

What should i set below values ?

Is1 (pickup) = ? pu

K1 : ? %

Is2 : ? pu

K2 : ? %

THANKS FOR YOUR ATTENTION

BEST WISHES...

 

[ScottyUK]

Are you serious? You want to protect a transformer worth in the order of US$1 million based on information gained for free from the internet? Get a qualified and experienced protection engineer to do the calculations for you.


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If we learn from our mistakes I'm getting a great education!

 

[SEFAILI]

hi scotty,
can you examine attached file,
it has two test about choose slope
i am waiting ur opinion
thanks for now.

 

[rbulsara]

Hire a professional. If you did not read the first post.

Rafiq Bulsara

http://www.srengineersct.com

 

[jack6238]

SEFAILI,

Unfortunately you are in way over your technical capabilities. Get some help!!There are more items to consider thant just the transformer differential settings.I'll bet you did not ask for the transformer technical data sheets or the technical information on the protection relays,the type of gronuding or the detailed information on the transformer such as winding time constant, etc.
Jack