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<< Click to Display Table of Contents >> Partial shadings and calculations |
  
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<< Click to Display Table of Contents >> Partial shadings and calculations |
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When working on big projects it can be useful to limit the shading calculations to only a smaller part of the system.
It is possible to enable or disable shadow casting for each shading object of the scene. All objects cast shadows by default, except for the ground objects.
By disabling shadow casting, the object will stop projecting shadows on other objects BUT it will still receive shadows from other objects if it is a PV object.
To enable shadow casting, use the checkbox located at the bottom right corner of all objects definition form:
You can also use the contextual menu from the objects tree:
This feature is intended to be used for multiple purposes:
•enable shadow calculations for ground objects when they may have an impact on the results
•disable far objects which you know will never generate any shadow on PV areas to simplify calculations
•quickly testing the impact of a shading object without having to remove it from the scene
Even if you built an entire plant in the 3D scene, you may want to run the shading calculations only on a specific area of your plant.
The results of this partial calculation will then be used for the entire PV system, as an extrapolation.
To do so, you must first enable the partial shading calculations from the menu "Tools > Use partial shading calculations".
Once this is enabled a new group of objects will appear under the "Groups and zones" panel.
This group is managed like any other group except for the fact that it can only contain PV fields.
The final step for partial electrical calculations is to add the PV fields for which you want to compute shadings in this new group. Please refer to the Groups of objects section for more information on groups management.
Output in the report
When you generate a simulation report with partial calculations, the percentage of PV area used for the calculations is mentioned near the shadings details:
