×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Subtransient Reactance of Generator

Subtransient Reactance of Generator

Subtransient Reactance of Generator

(OP)
Who know the subtransient reactance data of 35MW generators?  Thanks in advance.

RE: Subtransient Reactance of Generator

You should be able to find it on the generator test data.

RE: Subtransient Reactance of Generator

Hydro unit, gas turbine, or steam?  rpm or # of poles?  Hz? Manufacturer?

Typical values 0.12 - 0.25 for 2-pole machines.

RE: Subtransient Reactance of Generator

(OP)
It is a Hydro typo. 50HZ
poles? Manufacturer? I don't know.

We are working on an international project based on Guesses, which is driving me nuts.

RE: Subtransient Reactance of Generator

I think that is something you are going to have to get from the manufacturer.  Do you have any hints or clues to who that might be?

rmw

RE: Subtransient Reactance of Generator

On a 50Hz 4 pole generator 1500rpm (diesel)400/231vac up to 2.5mW we  use 0.8.

RE: Subtransient Reactance of Generator

Who know the subtransient reactance data of 0.556MVA generators?  and where can ? find these values of generators from? thanks

RE: Subtransient Reactance of Generator

Sub-transient, Transient & steaDY STATE  reactance of machines are dependent on macine size.

Medium size machine:-

Subtransient Reactance = 0.16 to 0.24
Transient Reactance = 0.2 to 0.28
Synhronous reactance = 2.25 to 3.0

Synchronous reacance value is inversly proportional to short circuit ratio of machine. For example SC Raio = 0.4 then Xs = 1/0.4 = 2.5

Thanks

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources