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element nametopology
defined inhttp://solargis.info/schema/common-pv.xsd
description

The element is for defining PV plant layout on the ground. The reason is to provide inputs for calculation of self-shading impact on PV power (e.g., how close to each other are PV constructions).

contentnone
@type*XML element type, required, concrete type of how topology should be modeled. Use one from TopologyRow (applies for the 'GeometryFixedOneAngle' geometry), TopologyColumn (use for all trackers). It is assumed trackers are spaced equally in both directions (rows and columns) creating a regular grid.
@relativeSpacing

required, unitless ratio. The attribute specifies the ratio of distance between the neighboring PV table legs and PV table width. Direction of the distance depends on whether topology is specified as TopologyRow or TopologyColumn.

@typeoptional. This parameter estimates a magnitude of loss of PV power when modules are shaded or semi-shaded. The effect depends on wiring interconnections within a module. Shading influence ranges from 0% (no influence) to 100% (full influence) and it is classified into following categories (based on the influence value):

PROPORTIONAL = 20%
UNPROPORTIONAL_1 = 40%
UNPROPORTIONAL_2 = 60%
UNPROPORTIONAL_3 = 80%
When this attribute is missing, the self-shading influence is estimated to 5%.

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