Relative powers - Revision history

KKoPV at 15:24, 10 March 2014

2014-03-10T15:24:57Z

KKoPV: /* Chart */

2014-03-02T14:06:43Z

‎Chart

KKoPV: /* Channel definitions */

2014-03-02T14:06:14Z

‎Channel definitions

KKoPV: /* = Setup */

2014-03-02T14:01:28Z

‎= Setup

KKoPV: Created page with "== Abstract == If you have for example more than one solar plant/inverter with different size/orientation, the absolute power values in watt are not so helpful for comparison..."

2014-03-02T14:00:52Z

Created page with "== Abstract == If you have for example more than one solar plant/inverter with different size/orientation, the absolute power values in watt are not so helpful for comparison..."

New page

== Abstract ==

If you have for example more than one solar plant/inverter with different size/orientation, the absolute power values in watt are not so helpful for comparison.

A common unit for comparison is kilo watt per kilo watt peak.

So therefor you have to transform the watt data from a power sensor into kilo watt per kilo watt peak.

== Setup =

* A power sensor (with unit watt in this example)
* A proxy channel for calculation

I use for this the [[Proxy models#Calculator|calculator]] channel type, which is meant for such a use case.

To force the proxy to make the calculation, a proper resolution must be set.
* Inverter 1 installed power: 11.28 kilo watt peak
* Inverter 2 installed power: 9.18 kilo watt peak

Transform watt into kilo watt per kilo watt peak: [[File:FormulaRelativePower.png]]

== Channel definitions ==

Values for the factor attributes:
* Inverter 1: 0.0000887
* Inverter 2: 0.000109

Build a proper channel hierarchy:

[[File:RelativePowersTree1.png]]
[[File:RelativePowersTree2.png]]

== Chart ==

Now the channels are better comparable:

[[Category:Example]]
[[Category:Charts]]

← Older revision		Revision as of 15:24, 10 March 2014
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−	~~== Abstract ==~~	+	{{TOCright}}
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	If you have for example more than one solar plant/inverter with different size/orientation, the absolute power values in watt are not so helpful for comparison.		If you have for example more than one solar plant/inverter with different size/orientation, the absolute power values in watt are not so helpful for comparison.

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 Now the channels are better comparable:
 [[Category:Example]]
 [[Category:Charts]]

← Older revision		Revision as of 14:06, 2 March 2014
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	[[File:RelativePowersTree1.png]]		[[File:RelativePowersTree1.png]]
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	[[File:RelativePowersTree2.png]]		[[File:RelativePowersTree2.png]]

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 So therefor you have to transform the watt data from a power sensor into kilo watt per kilo watt peak.
-== Setup  =
+== Setup  ==
 * A power sensor (with unit watt in this example)