Applying sub-hourly Correction on TMY

[Rafael Santos]

Hi!

I am currently working on a project with 1-year on site measurements, with 10 minute temporal resolution.

I want to predict the annual energy production (using TMY), but the data from TMY is hourly based.

I thought at first of simulating with 3 MET inputs: 1-year measurement (hourly), 1-year measurement (10-minutes), and TMY (hourly), and then apply the correction:

SIM_TMY_corrected = (SIM_10-min_meas / SIM_hourly_meas) * SIM_TMY_hourly

I thought this would have been a fair approximation, as the sub-hourly simulation would only have an effect on the clipping losses. But as I made the simulations, I noticed that the sub-hourly simulation has a very large effect also on the transposition gain, as showed below:

 

Hourly measurements:

 

10-Minute measurements:

 

With that being said, ,y question is: would still make sense to apply the correction above? In this particular case: CF = 17529 MWh / 17389 MWh

 

Best regards,

Rafael