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Blown up power flow solution right after adding short circuit data at the swing generator

asked 2016-01-28 12:20:33 -0500

SKT gravatar image

I am connecting an infinite generator at a bus (swing bus) and then a branch with R and X values obtained from the short circuit data connects this bus to my system. This is to consider the contribution of the utility side during the dynamic simulation. But I am stuck with a blown up power flow before even considering the system dynamics. I haven't been able to narrow down the problem. I am sure the system is set up right as I was able to run the power flow before adding that R and X branch i.e., the infinite generator with no short circuit data.

Any help in this regard would be very helpful and appreciated.

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answered 2016-09-19 15:39:25 -0500

perolofl gravatar image

Since the load flow was blown up after adding the new generator bus and a branch you should solve again with FLAT START!

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answered 2016-02-04 22:50:06 -0500

bad_hand gravatar image

Perhaps the R and X values are big changes from PSSE solution point of view. Try modelling the branch with high R and X values and then reduce these gradually in small steps till you reach the desired values.

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answered 2016-08-08 06:45:20 -0500

Cao Huy gravatar image

I don't think it work when you applied short-circuit impedance in to reach LF solution. I recommend you change the transient parameter of generator to do dynamic simulation instead of putting a abnormal value of impedance into system.

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Asked: 2016-01-28 12:20:33 -0500

Seen: 4,234 times

Last updated: Sep 19 '16