SULTAN ALSHAAIBI 7/18/2014

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1925 Views

Hi !

I am doing an optimization scenario in LEAP

Branch Transformation > Electricity Generation
I set Optimize > Yes
Renewable target > 20

I get the following error:

' The system load shape must specified as as " energy load shape " for optimization calculations.
Go to Basic Parameters loads to change this settings."

I went to the :
Basic Parameters > loads > load shape for entire system % of Annual generation , is now chosen

Again, a new error:

"System Energy Load Shape variables must be specified with a yearly shape of type: "Energy Load Shape". The base year shape you selected is type: Peak Load Shape
Go to the General: Yearly Shapes screen to view the current library of yearly shapes."

Branch:Transformation\Electricity Generation
Variable:System Energy Load Shape
Scenario:Current Accounts
Year:2011
Expression:YearlyShape(System Load Shape)

So, I fixed this by changing:
General > yearly shapes> shape type > energy load shape % of annual load

Now I get this error

load factor is greater than 100%
Branch transformation / electricity generation
variable system peak load shape
scenario current account
Year 2011
expression YearlyShape(System Load Shape)

..................................

So I try to fix this error but I can NOT. Would you help me with this?

Best regards

Sultan

Charlie Heaps 7/18/2014
 

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1924 Views

It sounds like the load shape you are using is not correctly specified.

Please post your data set here as a .leap data file so I can take a look. If you don't wish your data set to be public then you can email it to me (as a .leap file) at leap@sei-us.org

Thanks!

Charlie

SULTAN ALSHAAIBI 7/20/2014
 

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1855 Views

Dear Dr. Charles,

Please see attached

Many thanks

Sultan

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Attachments:  a.leap [9]

Taylor Binnington 7/30/2014
 

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1843 Views

Hi Sultan,

Looking at your load curve, I see that the values for percentage of annual load sum to a number greater than 100%. However, an energy load shape must describe the percentage of total annual energy in each time slice (and therefore will sum to 100% across all time slices).

Have a look at these two help files which describe the difference between peak and energy load shapes:

http://www.energycommunity.org/WebHelpPro/Transformation/System_Energy_Load_Shape.htm

http://www.energycommunity.org/WebHelpPro/Transformation/System_Peak_Load_Shape.htm

Hope this helps,

Taylor

Suhono Suhono 11/15/2014
 

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1590 Views

Dear All,

I have an error in optimization process. The notification appear as you can see in the screen capture. I do not understand and please help me how to solve the problem.
Thanks,
Ahmad Suhono

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Taylor Binnington 11/19/2014
 

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1587 Views

Hi Ahmad,

The message "No Primal Feasible Solution" indicates that OSeMOSYS was not able to reach a solution, given the constraints which you applied to your system.

This often means that you have specified conflicting constraints. An example of a conflicting constraint may be that you are enforcing a nonzero renewable target, but have no renewable processes to build.

Try first running your model without any additional constraints, to see if a solution can be found. You can then gradually add them back in, to give you an understanding of which ones may be conflicting with one another.

Hope this helps,

Taylor