Ignacio Mazariegos 5/20/2009

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Hi

I was checking out the solutions to the training exercises, and I was wondering how come the "Transmission and Distribution" values are higher than the "Electricity Generation" in the first 3 years (2000-2002) for exercise 1. Isn't the value of "T+D" = (1- losses)% * "Electricity Gen."

Maybe I'm not understanding some basic principle here. Could somebody explain?

Sorry if the question has been asked before.

Thanks
Ignacio

Charlie Heaps 5/20/2009
 

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Hi Ignacio,

Yes - you're equation looks correct and that reflects how you should set up your LEAP modules. I am not clear what you mean by...the "Transmission and Distribution" values are higher than the "Electricity Generation"

What values are you referring to?

Charlie


> Hi
>
> I was checking out the solutions to the training exercises, and I was wondering how come the "Transmission and Distribution" values are higher than the "Electricity Generation" in the first 3 years (2000-2002) for exercise 1. Isn't the value of "T+D" = (1- losses)% * "Electricity Gen."
>
> Maybe I'm not understanding some basic principle here. Could somebody explain?
>
> Sorry if the question has been asked before.
>
> Thanks
> Ignacio
>

Ignacio Mazariegos 5/20/2009
 

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Thanks Charlie.

What I mean is that the results show that more energy has been transmitted and distributed, than the amount that has been generated. When I graph both the "T+D" and the Generation side by side, I get the first 3 years (2000, 2001, 2002) with higher values of T+D than Generation (the graph that I'm referring to is the "Transformation Results: Outputs", from the Exercise 1 solution published on the Internet).

Charlie Heaps 5/20/2009
 

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> What I mean is that the results show that more energy has been transmitted and distributed, than the amount that has been generated. When I graph both the "T+D" and the Generation side by side, I get the first 3 years (2000, 2001, 2002) with higher values of T+D than Generation (the graph that I'm referring to is the "Transformation Results: Outputs", from the Exercise 1 solution published on the Internet).


Sorry - I am being a bit dense here - I am still not sure what you figure you are referring to - please provide specific publication and page ref.

However, here also are a few things to check...

1. Is the T&D module ABOVE the generation module in the tree? It should be.

2. Does your T&D deal with losses in more than one fuel? If you also have eg. natural gas losses in there, then that could explain why the outputs are more than the electric production from the generation module. Check you are looking at just the electricity results.

3. Are you comparing the same units on both charts.

I hope this helps!

Charlie

Veena Subramanyam 5/20/2009
 

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Hi there,
I checked excercise 1 of LEAP .
It includes natural gas T&D losses as well.
If you just take electricity losses you will see that 2015 losses reduce to 12% and eventually in 2030 it is 9% .Therefore the total electricity output matches after generation and losses.Check the figures excluding natural gas.
Thanks
Veena

Ignacio Mazariegos 5/20/2009
 

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You were right. I was comparing T+D with Electricity generation without realizing that T+D also took into consideration Natural Gas.

Thank you so much!!

Ignacio