LEAP

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Topic: LEAP OPTIMIZATIONSubscribe | Previous | Next

Asim Amjad 8/15/2016

Dear Sir, I need valued help, can anyone be?

I am currently
working on LEAP Optimization Exercise. The thing which I want to ask is
that I have load data in days for the whole one year i.e. 2015, not in
hours. So, can anyone be there who tell me how I am fixed it for
analysis?

I shall be very thankful.

Regards
Asim Amjad

Taylor Binnington 8/17/2016

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Hi Asim,

LEAP is flexible enough to accommodate load curves with as many as 8760 data points (one for each hour) and as few as 1 data point (representing the average for the whole year). If you have load data for your country which is given for each day, then you can still import this into the software. Once you choose the set of time slices which you will use for your model (by setting them up under General: Time Slices), you have three options for entering your load curve information using LEAP's General: Yearly Shapes menu:

Use the "Import" button at the top of the Yearly Shapes menu. This will look for a named Excel range (for more information about named ranges in Excel, visit this page: https://support.office.com/en-us/article/Define-and-use-names-in-formulas-4d0f13ac-53b7-422e-afd2-abd7ff379c64) in your open Excel workbook which contains one value for each time slice, in order. It will then import these numbers directly into your Yearly Shape.
Use the "Import Hourly Shape" button. This will look for a named range in Excel containing 8760 (or 8784, if your time slices are set up assuming a leap year) hours of data, which must be consecutive in time. LEAP will then automatically assign the load in each of these hours to the appropriate time slice, normalizing the data appropriately. Note that time slices must be defined using the "Detailed" time slice setup option, if this method is to be used.
Enter the values into the yearly shape manually, using your keyboard.

Which option you choose depends on how many time slices you have set up in your model - not necessarily on the resolution of the load data that you have. The simplest way for you to import daily load data will likely be for you to artificially generate a list of 8760 load data points using Excel by repeating each daily load 24 times for each hour of that day. You would then be able to import this range into Excel using option #2, above.

You may also find it helpful to look at this help page about LEAP's Yearly Shapes: bit.ly/2aZ7OeT.

Hope this helps,

Taylor

Asim Amjad 8/24/2016

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Dear Sir,

Thank you so much for your valued help. I understand how per day data will be import in LEAP.

Best Regards

Asim Amjad

Asim Amjad 8/26/2016

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Dear Sir

I hope you will be fine. I am thankful for your last valued help. I need your guidance for couple of things. My query is: Can I use the standard values already in LEAP software as our assumptions for;
1. Planning Reserve Margin
2. Dispatch Rule
3. What is the purpose of Discount Rate? Why we add it?

If not then can you plz share some website/information for standard values for different energy resources for electricity generation. For example, if I am adding Oil for electricity generation then what are the standard values for that?

Hoping to hear from you soon.
Thanks,

Asim

Emily Ghosh 8/26/2016

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Hi Asim,

1. I recommend reviewing utility websites for the region you are modeling because you may find the Planning Reserve Margin documented online. The Planning Reserve Margin is used by LEAP to decide when endogenous capacity needs to be added. In other words, LEAP adds endogenous capacity to meet the Planning Reserve Margin when there is insufficient capacity.

If you do not plan to model endogenous capacity, you can choose to turn off the Planning Reserve Margin by right-clicking a module to access module properties and un-checking Planning Reserve Margin. More information on this topic is available through the following link: https://www.energycommunity.org/Help/Transformation/Planning_Reserve_Margin.htm

Note that the Actual Reserve Margin is calculated by LEAP and is a result variable which shows the amount of reserve margin for a given module. The equation used to calculate the Actual Reserve Margin is provided in the following link: http://energycommunity.org/WebHelpPro/Results_Categories/Reserve_Margin.htm

2. The Dispatch Rule determines how processes are dispatched. There are 5 dispatch rules to choose from. The most basic rule is the PercentShare dispatch rule where a given process in a module is specified to meet a percentage of the module's energy supply requirements, and will meet the requirement as long as the process has sufficient available capacity. Details on the other dispatch rules are outlined here: http://www.energycommunity.org/WebHelpPro/Transformation/Process_Dispatch_Rules.htm

3. Discount rate is economic variable used to calculate Net Present Value (NPV) as described here: https://en.wikipedia.org/wiki/Net_present_value. The IEA uses a discount rate of 5% and 10% for projecting future costs (https://www.iea.org/publications/freepublications/publication/projected-costs-of-generating-electricity-2010-edition.html). I suggest researching on typical discount rates used in the country you are modeling.

4. The values used in the training manual should not be used because they are only an example and may not reflect actual conditions. There are many resources available online with typical default values for various energy processes, as found in the LEAP library (https://www.energycommunity.org/default.asp?action=library). The International Energy Agency (IEA) is also a very useful resource, in particular the annual Energy Technology Perspectives publications (https://www.iea.org/publications/freepublications/). The latest Intergovernmental Panel on Climate Change (IPCC) Assessment Report (AR5) also has some useful data and costs for processes.

Thanks!

Emily

Asim Amjad 8/30/2016

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Thank you so much for your valued guidance.