Why to give a large MVA to this infinite machine and set its Xs = 0.01 or less when representing an SMIB ?

asked 2024-02-20 20:20:29 -0600

gabriel_ipu
15 ●5 ●6 ●9

I'm trying to compare dynamics results with other software, and it only matches when i do this, why i would give a large MVA to an infinite machine ?

edit retag flag offensive close merge delete

add a comment

1 answer

Sort by » oldest newest most voted

answered 2024-02-21 11:15:56 -0600

perolofl

3332 ●1 ●8 ●19

The short circuit power from a generator can be estimated to Mbase/Zsorce. Hence, a large Mbase and small Xsorce will lead to a very high short circuit power contribution to the bus, i.e. an infinite bus!

For example, Mbase=10 000 MVA, Xsorce=0.01 --> Short circuit power = 10 000/0.01 = 1 000 000 MVA.

edit flag offensive delete link

add a comment

Question Tools

1 follower

Stats

Asked: 2024-02-20 20:20:29 -0600

Seen: 152 times

Last updated: Feb 21

Why to give a large MVA to this infinite machine and set its Xs = 0.01 or less when representing an SMIB ?

1 answer

Your Answer

Question Tools

Stats

Related questions