Infinite Generator
I'm setting up a case representing an infinite generator. I assume modeling this dynamically is just as simple as having a large inertia and large damping coefficient for said generator?
Thanks
4 answers
Use the classic model GENCLS, and no exciter,nor governor models. In the base case, give a large MVA to this machine and set its Xs = 0.01 or less.
The short circuit power in MVA for the "infinite bus" is determined by Mbase/Zsorce. Select GENCLS with H=0 to make the generator infinitely heavy in the dynamics (infinite inertia and constant frequency)
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I have done same .. On tripping one of generator ... Initially, my infinite generator is picking up the load, however, later , that additional load is being distributed on all of remaining generators and infinite generator is going back at its initial load... whereas, I want to have that infinite generator to keep serving that deficit..
I wanted to attach the Pelectrical images for your reference.. however, website is denying by saying to "not have Karma>10"...
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What is the purpose of this Xsource = 0.01 ? What is the relation between the modeling Infinite Bus and the Xsorce parameter ?
jesus...is no one else running into this problem?!?!?
I decided to post in here because my question is relevant: "How do I model an infinite bus?" To be more exact, I need to model many infinite buses so "How do I model a number of infinite buses in a case?" I am asking in both load flow network data and dynamic model terms.
- What bus type do they need to be? Generator buses or Swing buses?
- Voltage schedules need to be set to 1, right?
- H (inertia) and D (damping) in Dynamic Data have to be 0, both of them ?
- No controls, no governors, no nothing?
- Generator model is GENCLS, right?
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Asked: 2015-10-05 21:02:21 -0500
Seen: 5,548 times
Last updated: Sep 26 '16
Thanks jconto, the damping and inertia coefficients should be large though correct?
Yes, that is correct.
The damping factor shall be zero!!!!!