author=muDped link=topic=3881.msg79537#msg79537 date=1579409473]
It is a relief to discover that you've been busy on a large scale
Free Energy project. Some of us were worried that you may
have been done in by the Bushfires.
No.
Lucky for me,i live in the southwest of Western Australia,and the bad fires are over in the eastern side of Australia. Australia now holds the record for the largest fires in the world,something we did not want to be famous for. Seems we have lost 1/3rd of our koala population this time,and many have lost there lives and homes.
This was all thanks to the greens party,who pushed and pushed to have hazard reduction burning stopped,which they succeeded in doing so some 5 years back. They claimed it killed to much wild life,but it has really come back and bit them in the ass this time.
Presumably your project is slated to be Grid-Tied which could
reap considerable benefit.
This was a tricky one to sort out with the power provider,as they would only allow a 5kw system on feedback,due to the size of the transformers on the local grid. So they would not allow a 16.6kw system to be grid tied with feedback. So what i did was i used non feedback inverters,and so the system then becomes nothing more than an electrical appliance --just like a big UPS in reverse mode.
So,the system is grid tied without feed back.
The farm draws power from the solar panels first.
Then when they cannot deliver enough power,the system draws from the batteries.
If the batteries get down to low,only then dose the farm draw from the grid.
Your Battery Bank arrangement brings
to mind the setups in the old Diesel-Electric Submarines. The cells
used on the Boats were much larger in physical size but also the
2 Volt cells.
I had to do a lot of research on the battery bank.
All of the solar companies keep pushing for the tesla powerwall 2 batteries,but the cost for output just did not add up.
The powerwall 2 is about $12700.00 over here,and comes with a 10 year warranty.
This gives you 13.5kwh at best at a 2kwh draw,and has a peak continuous draw of 5kw.
The batteries i talked my boss into using cost $13500.00,and that was with all the bridging links.
These batteries also have a 10 year warranty,but a 14 year warranty for 90% capacity.
They can deliver 9.6kw continuously without damage,and have a capacity of 64.8kwh at 100%.
I have set the inverters to draw the batteries down only 30% of there rated capacity,but that is still 19.4kwh.
So for the extra $800.00,the good old deep cycles kill the tesla powerwall batteries in $s for stored energy value.
Tesla powerwall at 100% capacity draw-->$940.00 per kwh
Deep cycle at only 30% capacity draw-->$696 per kwh.
So for home use,these deepcycle's are the way to go.
As we have (on average) 300 days of clear sky's each year in this part of the country,i think the system should pay for itself in under 4 years.
Hoping that your Mum recovers fully. Best wishes mate.
She has her up's and down's,but she is doing ok ATM.
Thanks for your good wishes.
Brad
Never let your schooling get in the way of your education.
Author
Topic: Large Solar Instalation (Read 1072 times)
