[TRNSYS-users] A problem in modeling a Stand Alone PV Station

[David BRADLEY]

Dear Binbin Ge,
   The PV module requires not only total but beam and diffuse radiation 
as well as incidence angle. By leaving the beam and diffuse radiation 
inputs to type94 unconnected, the model takes these to be constantly 
zero and all the radiation falling on the module is assumed to be ground 
reflected. If you are able to generate beam and diffuse radiation (as 
well as total) then you should include them in your data file and read 
these with your Type9 weather data reader. Note, I am a little confused 
when you say that the weather can be read by Type109 but in your 
simulation, it is being read by a Type9. If you cannot generate beam and 
diffuse then somehow you will need to generate the total on the 
horizontal then use a type16 radiation processor to compute an estimate 
of the split between beam and diffuse radiation.
Best,
  David


On 12/3/2012 07:18, 葛彬彬 wrote:
> Dear sir/Madam:
>        I am a graduate student student from Shanghai Jiao Tong 
> University, Shanghai,China. These days I am using the Trnsys 16 to 
> simulate a stand alone PV station.But as I am going with the program, 
> some errors come up. The weather data is loaded by type 109 and it can 
> read the data rightly. And I am using type94a to simulate the PV 
> array. But for a 900Wp PV station, the output is quite low. I am 
> confused about the problem. Please help me to check the model attached 
> in the email.
>        Thank you very much!
>        Best
> Regards!
> Binbin Ge
>
>
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users

-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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