Let the sunshine in!
Now THIS is what solar power production should look like on a sunny day! I am so happy I could sing, but no one wants that, so instead I'll link to this YouTube video :)
Our house power was out today while Xcel installed a new transformer. Greg from Innovative Power Systems was kind enough to get over hear within a short time after power was restored to make sure the system was all in good working order.
He got here in time to test out the system on the new transformer just as we were at peak production for the day, which made for a very good stress test (thank you Greg!).
The system worked beautifully!
If you read some of my earlier blogs, you know we have been struggling with this for some time.
Below is a sunny morning from last October which shows how the system behaved as the power climbed. Usually one of the inverters would reset itself because the Voltage got too high. Sometimes a pair would reset.
The graph below shows what a system should NOT be doing on a sunny day. The dashed lines in both of these show the power generated from each of the three inverters.
This is such a huge relief and I want to thank Greg and the crew at IPS for hanging in there and getting this fixed.
What I found more interesting was seeing how the voltage behaved on each day.
Here you can see how steady the voltage is now, as opposed to before.
Also, you can see the voltage on line 1 and line 2 are identical now, where before they varied a bit.
Line 1 and 2 should each be in the 120-125 range, giving a house voltage in the 240-250 range.
Normally, the house power is very close to 240 Volts.
However, when our solar panels are pushing energy back out to the grid, the voltage rises just a bit. That voltage adjusts very slowly and smoothly, when working properly.
Before, the voltage not only spiked much higher, but it was not at all smooth, and Line 1 and Line 2 were not identical.
I am very happy we got a chance to test the system out today. The rest of the week looks pretty rainy, so I would have had to hold my breath for days, if not a week, and I am no good at that ;)
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Mark really doesn't like to talk about himself, the house is much more interesting.