Difference between revisions of "Energy import example"

Latest revision as of 14:18, 6 March 2014

Charts

PVOutput

PVLng adoption

The interesting part is the red Energy import spline, which stops at 7:20 by 2820 Wh. This means, no energy import, only export. Import restarts at 17:50.

Please note:

Arrange the channels according their units to the axes!

Definition

Let's start with the meter channels for the areas.

I decided to put all watt channels on the left and all kilo watt hour channels on the right axis.

All calculation is based on these real channels

P_AC [W] inverter power
E-Total [Wh] inverter production
Power usage [W] from S0 impulses

Lets prepare the calculated channels.

Power balance

This is a full differentiator channel to get also negative values.

For good-bad look the negative values will be shown in red.

Energy Import

For this channel we need a Proxy models#SensorToMeter channel, which transforms our power usage into an energy usage. (Factor is here set to 1000 to get kilo watt hours from watts.)

The energy import channel is based on the Import / Export channel type.

We define here a negative cost per kilo watt hours to see later the amount consumed. (We pay here 23.44 cent per kilo watt hour == 0.2344 €)

Internal consumption

Internal consumption is simply the difference between overall energy usage and energy import.

We get here 16.74 cent per internally used kilo watt hour == 0.1674 €

Energy export

Result

We have consumed 2.899 kilo watt hours of our self produced energy, bought 8.767 kilo watt hours and have a win of € 0.78 this day!
We have also exported 9.434 kilo watt hours for € 2.34
The Amount column will only be filled for meter channels.
The Cost column will only be filled for meter channels with costs defined.

@@ Line 1: / Line 1: @@
-== Abstract ==
+{{TOCright}}
 The so called "Energy import" is inspired by [http://PVOutput.org PVOutput] energy import chart.
@@ Line 25: / Line 24: @@
 Let's start with the meter channels for the areas.
-I decided to put all "watt" channels on the left and all "watt hour" channels on the right axis.
+I decided to put all <tt>watt</tt> channels on the left and all <tt>kilo watt hour</tt> channels on the right axis.
-=== E-Total ===
+All calculation is based on these real channels
-'''Definition'''
+* P<sub>AC</sub> [W] inverter power
+* E-Total [Wh] inverter production
+* Power usage [W] from S0 impulses
-[[File:EnergyImportE-TotalChannel.png]]
+Lets prepare the calculated channels.
-We define here a positive cost per watt hour to see later the income amount generated.
+=== Power balance ===
-(We get here 28.74 cent per kilo watt hour == 0.0002874 Euro per watt hour)
+[[File:PowerBalanceTree.png]]
-'''Chart settings'''
+This is a [[Grouping models#DifferentiatorFull|full differentiator]] channel to get also negative values.
-[[File:EnergyImportE-TotalChart.png]]
+[[File:PowerBalanceChart.png]]
-=== S0 consumption and Power consumption ===
+For good-bad look the negative values will be shown in red.
-'''Definition'''
-Here we need also a special helper channel, the [[SensorToMeter|Sensor to Meter]] proxy.
+=== Energy Import ===
-We have to convert the actual power consumption (Power sensor in watt) into an meter channel (in watt hours) which also sums up the data.
+For this channel we need a [[Proxy models#SensorToMeter]] channel, which transforms our power usage into an energy usage. ([[Channel attributes#Factor|Factor]] is here set to 1000 to get kilo watt hours from watts.)
- Power consumption [Wh]
+[[File:EnergyUsageTree.png]]
-   |-> Power usage [W]
-The Power usage is a normal power [[sensor]] and the Power consumption is the proxy to convert the sensor to a meter channel!
+The energy import channel is based on the [[Grouping models#InternalConsumption|Import / Export]] channel type.
-[[File:PowerUsageChannel.png]]
+[[File:EnergyImportTree.png]]
-'''Chart settings'''
+We define here a negative [[Channel attributes#Cost|cost]] per kilo watt hours to see later the amount consumed. (We pay here 23.44 cent per kilo watt hour == 0.2344 €)
-[[File:PowerConsumptionChartSettings.png]] [[File:PowerUsageChartSettings.png]]
+=== Internal consumption ===
-For Power consumption we are also interested in peek powers used.
+Internal consumption is simply the difference between overall energy usage and energy import.
-=== PAC ===
+[[File:InternalConsumptionTree.png]]
-'''Definition'''
-Simply the actual generated inverter power:
+We get here 16.74 cent per internally used kilo watt hour == 0.1674 €
-[[File:PacChannel.png]]
+=== Energy export ===
-'''Chart settings'''
+[[File:EnergyExportTree.png]]
-[[File:PacChartSettings.png]]
-We are also interested in the max. value.
-=== Energy Import ===
-'''Definition'''
-Here we need a channel based on the [[Import / Export channel type|Import / Export]] channel type.
-[[File:EnergyImportChannel.png]]
-We define here a negative cost per Wh to see later the amount consumed.
-(We pay here 23.44 cent per kilo watt hour == 0.0002344 Euro per watt hour)
-'''Chart settings'''
-[[File:EnergyImportChartSettings.png]]
 == Result ==
-Now we can put this all together:
+[[File:ImportExportTable.png]]
-[[File:EnergyImportTree.png]]
-In the Charts view we will have this:
-[[File:EnergyImportChartsTree.png]]
-* We have '''consumed''' 4.6 kWh, but '''bought''' only 2.8 kWh and have a '''win''' of € 4.79 at the moment!
+* We have '''consumed''' 2.899 kilo watt hours of our self produced energy, '''bought''' 8.767 kilo watt hours and have a '''win''' of € 0.78 this day!
+* We have also '''exported''' 9.434 kilo watt hours for € 2.34
 * The '''Amount''' column will only be filled for [[Channel attributes#Meter|meter]] channels.
 * The '''Cost''' column will only be filled for meter channels with [[Channel attributes#Cost|costs]] defined.
+[[Category:Channel]]
 [[Category:Example]]

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