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Old 02-21-09, 04:10 PM   #23
groar
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Location: Toulouse, France
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Thanks to a simple assembly (see http://ecorenovator.org/forum/conser...nsumption.html), bought already made as I don't know how to use an iron... I will be able to monitor my PV production.

Currently I'm just testing it so I'm logging the raw data in a flat file then transcode and graph them through several scripts and the rrdtool database. Even if this assembly may be useful only on French meters, I'll post my scripts when they'll be of better quality, ie usable without having to be reverse engineered.

Here are the hourly productions (Wh) for these two days calculated from raw data :















Hours 2009-02-20 2009-02-21
07-08 0 0
08-09 12 24
09-10 57 183
10-11 283 394
11-12 803 781
12-13 1217 1159
13-14 1393 1424
14-15 1451 1457
15-16 1366 1259
16-17 1083 920
17-18 593 363
18-19 20 14
19-20 0 0


Here are the graphs for the 2 consecutive days monitored :
  • The instantaneous intensity (Amperes) :
  • The instantaneous appearing power (Volt.Amperes) :
  • The production (Wh) :


See comments in this message about the pro/cons of these data right under respective graphs.

The first day was very cold so everything was frozen during the first hours. The difference is important before 11AM. During the second day some clouds were crossing the sky, so the curves are more erratic.

I ordered a second assembly so I'll be able to monitor both production and consumption meters at same time

Denis.
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Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr
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    (2.66 kg/l diesel)
  • kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr
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    (59.1 g/kWh)
Radioactive wastes saved by 3kWc photo-voltaic solar panels :
  • Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh)
  • Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh)
Based upon "official" French figures...
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