Grid purchase capacity  

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(@kamathdi)
Active HOMER

Hi,

I wanted to know if the grid purchase capacity was the power definition for an hour or whether it limits the capacity to minute level? My load is a time series with the power changing per minute. I want to limit the grid purchase power to 7.2kW. However I am not able to see if this is carried out per minute, or HOMER Pro averages it out for the hour. I have this confusion because HOMER Pro averages my minute-wise load to an hourly average.

I hope you can help me with this. Thank you.

Regards,

Dipti

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Posted : July 6, 2017 3:06 pm
(@dhiwaakar)
Illustrious HOMER Admin

Hi Dipti,

 

The purchase capacity is either annual or monthly. Unlike other resources, grid is generally assumed to have a large capacity when available. If you have other sources of energy like a diesel generator or solar PV, you can limit the load from purchasing from the grid by introducing high demand rates, so that other sources will be cheaper. 

 

Best,

Dhiwaakar Purusothaman

ReplyQuote
Posted : July 6, 2017 3:28 pm
(@craigmcollinspae)
New HOMER

Dipti, 

Adding a purchase capacity optimization value will limit the maximum grid import to that value within any time step.

Cheers. 

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Posted : September 13, 2017 4:06 pm
  
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