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Re: [EnergyPlus_Support] Cable Losses





I have only experience with the simple PV/inverter setup and do not see anything for line loss using the simple model-Possibly there is a function for this in one of the other related objects but I do not see anything-  I guess you could deduct from the inverter efficiency as a "work around", reducing by a given % per linear foot.-- also if there is not a feature for this it should be added to newer versions, as line loss in DC power systems should be something that E+ would be able to model. 


Jeremiah D. Crossett  | Senior Analyst  |  Phase Change Energy Solutions
120 E. Pritchard St.  | Asheboro, NC 27203  | Mobile 503-688-8951
www.phasechange.com 
 

  






On Thu, Aug 9, 2012 at 6:46 AM, Fabiano Pallonetto <fabiano.pallonetto@xxxxxxxxx> wrote:
 

Hi everybody,
I am simulating a PV of 6 kWp and I have the weather data of the place.
I have inserted the PV model and the inverter but the production is 20%
higher than the real one.
I think the problem are in the cable, he DC cable are 30 meters and the
AC are 20 so I would like to add these parameters to the simulation,
where can I find some parameter to decrease the efficiency of the system
based on the cable losses or other factors that are not considered in
the simulation?
thank you everybody
Fabiano




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