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element name | topology |
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defined in | http://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). |
content | none |
@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. See picture below how to calculate the value. |
@type | optional. 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% (for a-Si, CdTe and CIS where the loss of generated electricity is proportional to the size of module area in shade) When this attribute is missing, the self-shading influence is estimated to 5%. |
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Note |
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Timestamps used in the XML response comply with the ISO 8601 standard for date and time representation https://en.wikipedia.org/wiki/ISO_8601. Time stamps are also aware of time zone (offset from UTC). Time zone designators are appended after the the time part of timestamp string. If the time is in UTC (https://en.wikipedia.org/wiki/Coordinated_Universal_Time), Z is added directly after the time without a space. Z is the zone designator for the zero UTC offset e.g., 2017-09-22T01:00:00.000Z . If there is an offset from UTC, this is designated by appending +/-HH:MM after the timestamp string, e.g., 2017-09-22T01:00:00.000-05:00 (UTC-5). |
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