nico7904 Posted December 29, 2015 Share Posted December 29, 2015 Dear All,When I run the simulation for a stand alone system in PVsyst version 5.74, the Effective Energy at output of array, displayed in loss diagram in the report, doesn't match with the parameter EArUfix (Array nominal energy (at STC effic.) after remove all losses.For example for this project, I have 1165 kWh for the Array nominal Energy at STC.Here is the link for the screenshot of the Loss Diagram : https://photos.google.com/share/AF1QipNmgDl5SX7Q4J7SvH_rsFXStJQfwRAVO4Hy_9cTzWZX6Yfb6LX7BO0vFVlCkYwl0Q?key=T2ttUEpVd2xvYWxyWkRCMVpSOHFLSTJJTkM1YTRBIf I recalculate losses following percentages displayed on the loss diagram attached, I get :1165 - 0.037x1165 = 1122 kWh - After PV loss due to irradiance level1122 - 0.107x1122 = 1002 kWh - After PV loss due to temperature1002 - 0.019x1002 = 983 kWh - After module quality loss983 - 0.015x983 = 968 kWh - After module array mismatch loss968 - 0.012x968 = 956 kWh - After ohmic wiring loss956 - 0.186x956 = 779 kWh - After loss by respect to the MPP running779 - 0.015x779 = 767 kWh - After Unused energy (full battery) loss ...which is different of the Effective energy at the output of the array : 757 kWh.Could anyone explain that difference ?Thanks for your help Link to comment Share on other sites More sharing options...
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