a.nashed Posted April 13, 2014 Share Posted April 13, 2014 HelloI am designing a stand alone PV system.I ran a simulation and after checking the output excel file, i found out that while the battery SOC was in the range of 40-50% (i checked the SOC at the beginning and end of the interval as well as the average) during 1 hour interval, PVsyst shows that User energy is less than that required by the load. see below: SOC Beg SOC End SOCmean E Avail E Load E User T LOL E Miss25/12/1990 8:00 0.4962 0.5104 0.5033 13798 47820 0 1 4782025/12/1990 9:00 0.5104 0.5341 0.5223 23320 47820 0 1 4782025/12/1990 10:00 0.5341 0.5666 0.5503 31938 47820 0 1 4782025/12/1990 11:00 0.5666 0.6123 0.5894 45374 47820 0 1 4782025/12/1990 12:00 0.6123 0.6573 0.6348 44820 47820 0 1 47820Why the the energy available from the array and the batteries in the table above did not go to the load although it is more than what required?I realized also that while the missing power could occur for only few minutes in each hour, PVsyst multiplies the missing power by the whole hour which in this case would overestimate the results Thank youRegards,Amir Link to comment Share on other sites More sharing options...
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