This should be possible. I have discussed what it might take to set
up a system like that in the Gambia, with wind generators. It would
take a control system with differential current sensors and other
features. The UL 1741 specifications would probably need to be
opened up on multiple direct grid tie inverters. There would be a
practical limit on the percentage of feed to the generator mini grid.
This being said, I've not received much encouragement with this
idea. There are a lot of factors to consider.
At 09:35 AM 3/11/2009, you wrote:
Undoubtably many of us are getting interesting project requests as
folks want to sprinkle magic stimulus dust on things to make solar
panels grow...
We have a project with a huge electrical load, pumping water for a
medium sized city. They want solar... great. Easy.
They had a power outage and kept running with 2.6 MW of diesel
generators. They are interested in solar's ability to do
"backup". I don't think that many batteries will fit in my pickup
truck, and I hate working with 300/0 wire.
QUESTION: (and maybe its an easy one and the SMA guys will say,
sure, we did that in Greece). Is it viable to set up a micro-grid
in this scenario and run an island-mode, with available solar
reducing the genny plant demand? Should I just say "forget it" or,
at this MW scale, would the switchgear and effort be practical?
Thanks.
For a brighter energy future,
Geoff Greenfield
President
Third Sun Solar & Wind Power Ltd.
340 West State Street, Unit 25
Athens, OH 45701
740.597.3111 Fax 740.597.1548
www.Third-Sun.com
Clean Energy - Expertly Installed
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