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View Diary: I've Begun the Solar Investigation (126 comments)

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  •  ahh, a much better explanation (3+ / 0-)
    Recommended by:
    chimpy, bondibox, Xavier Onassis EMTP

    to my question I just posted about this up a bit.

    so the Smart Meter™can't control the inverter so the person can use his own power, and then control the reconnection to the grid?

    needs to be smarter yes?

    but you're saying their are inverters the homeowner pays for that will allow this, but cost more...ok, first good answer I have seen on the subject, thanks.

    so the Smart Metres were designed to cut off with grid loss, but not coordinate the sine wave for reconnection?
      was that so costly they somehow couldn't make an optional design?

    that also seems to be saying that the inverter does not sense fast enough a change in the sine wave it sees from the Grid/Meter to calibrate to it soon enough...wouldn't that be really fast synching and not even really noticeable?

    another huh.

    This machine kills Fascists.

    by KenBee on Wed Aug 08, 2012 at 10:11:16 AM PDT

    [ Parent ]

    •  Forget about Smart Meters (2+ / 0-)
      Recommended by:
      KenBee, bondibox

      That's something different.

      A grid-only inverter turns on and off with the grid. If the grid has power (and there is sunlight) the inverter turns on and delivers energy to the grid. If the grid is down, then the grid-only inverter can not turn on by itself. As soon as the grid comes back up, then the inverter can turn itself on.

      A grid-interactive/standalone inverter is more sophisticated. It can run with or without the grid. So when the grid drops off, this type of inverter creates what is called an "island".

      Islands are good if you are expecting them and have designed for it - bad if they are unexpected. All depends on the engineering.

      Kiss my ass. This is a Holy Site...

      by jam on Wed Aug 08, 2012 at 12:47:42 PM PDT

      [ Parent ]

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