Topic: Convergence error and negative demandSubscribe | Previous | Next
Gregers Larsen 11/2/2015
643 Views Hello LEAP community.
I have an error message that I have not been able to solve myself, so I hope You are able to help me.
I have a system with some rather large energy demands. The system were originally made in a 2012 LEAP version.
Everything works fine seemingly when running the model for results, until I recieve an error message (attached) about the Absolute Convergence Critieria is larger than my energy demand. The listed demand is large, but negative.
Have anyone else seen this error. I have no knowledge of what to do about solving it.
I hope You can help,
Gregers Larsen
Taylor Binnington 11/13/2015
641 Views Hi Gregers, sorry for the wait.
The message appears to warn users that the total demand in their area is so small that LEAP will immediately assume that demand has been met with supply (i.e. its calculations have already converged). You may set this criteria under Basic Params: Calculations, in the "Calculations converged when:" section.
Still, I would not expect to see such a large negative demand. This suggests that there is some (possibly just one) branch in your tree which gives rise to a very large, negative number. Can you track this down in Analysis view?
Taylor