0

i have the following verified set of values for central London in 30min intervals (2015-2016):

Direct NI;Diffuse NI;Reflected;Global NI;Direct Horiz;Diffus Horiz;Global Horiz;Top of Atmosphere

this data is from soda-pro.com. the wind_speed and temp_air data is as well verified.

trying to create a simple pv generation model, i am not sure which values should be fed into the total_irrad function. for [dni, ghi, dhi] i've tried [Direct NI, Global Horiz, Direct Horiz] but the values make no sense (556kWh yearly for a 1kW system).

replacing the Direct NI with Global NI resulted 765 kWh/year for the same system - a bit more reasonable i think - but i'm not sure if that's correct.

advice please?

Noam Naveh
  • 133
  • 1
  • 3
  • 10

2 Answers2

0

I believe "POA global" should be fed to the system. You can calculate POA using get_irradiance function from pvsystem.

reference : link

Jaws
  • 65
  • 2
  • 8
0

DNI = Direct Normal Irradiance

GHI = Global Horizontal Irradiance

DHI = Diffuse Horizontal Irradiance

For your dataset, [dni, ghi, dhi] = [Direct NI, Global Horiz, Diffus Horiz]

Will Holmgren
  • 696
  • 5
  • 12