Grid feed in restrictions rural area !

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Grid feed in restrictions rural area !

Postby jaahn » Thu Sep 12, 2019 10:05 am

Hi :D
A friend is considering putting solar at his farm. He is a modest user, no big power uses. But he has to fix "his" wires to the meter on his property as they were deemed a fire risk very recently, so needs to spend some money there. The distance is about 250meters from his meter box to the road supply which has a transformer there.

The work required is to retension the wires as they are sagged below standard and probably replace the last pole with the meterbox. Interesting that the several poles in the string were put in by the supplier years ago, before his time, but are now deemed to be private poles and his responsibility, as is the last one which is marked as such.

He asked the supplier what the max he can feed in for grid connect and was told 8.3Kw but due to the 250m to the transformer it will in reality probably limit to about 3kw. Does this sound correct. I guess the rural grid is not as robust as in town to receive power. It does mean that putting in a big system will be a waste of money if it cannot feed the power into the grid and earn some money. It is a rural area with small grazing farms sprinkled around.

He could go off the grid but is reluctant to do that first up. Partly due to the fact he is planning on a large shed which would provide a suitable roof but it is not built yet. He would review the position of that shed to provide better roof orientation and distance to the house if he was off grid. Decisions decisions !

Ideas ? Answers ? Supplier ? Bulahdelah area NSW !
Jaahn
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Re: Grid feed in restrictions rural area !

Postby jules » Fri Sep 13, 2019 10:16 am

Very much depends on long term plans doesn't it?

If there's a chance he's considering going off-grid, it would most probably be cheaper to go that way from the start, to avoid the costs of setting up with a grid connection and it's related electronics then dumping all that gear and setting up the whole thing with somewhat different goals and ancillary gear.
Primary system: .8KW Trina panels; Plasmatronics PL40; 1,000Ah VRLA 12X2V battery bank; 1.7KW Selectronic inverter. Off grid for 30 years.

Spares; 5 x 12V, 1,000 Ah batteries plus a couple of regulators
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Re: Grid feed in restrictions rural area !

Postby qed » Fri Sep 13, 2019 11:22 am

The only real way to know is to get a competent installer out there with sum test equipment.
They will be able to calculate what you will be able to feed back into the grid.

The things that need to be considered
1 The line voltage at your place through the day
2 The size of the cable between your house and the street + distance
3 The supply running down the street , is it 2 or 3 whirs or a swer line

if you can measure the voltage at your place with everything turned off and then with known load
sa a 2.4kw radiates you will get an idea of what's possible to feed back into the grid
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Re: Grid feed in restrictions rural area !

Postby jaahn » Fri Sep 13, 2019 1:24 pm

Hi :D
Thanks for those answers so far. The long term plan may have changed due to the drought and lack of income. Perhaps sell the farm when the rain does come and it all looks green again :cry:

My friend has found the local multi qualified good electrician. He is working in the area and has given him a couple of quick answers and will come and look in detail and give more quotes and suggestions later. Of course he is there due to the 'non compliance' notices handed out around the place. The inspections were done last year by a hellicopter, no boots on the ground. :roll: He says the wires are OK anyway and not below standard. But he is qualified to do that at a cost of about 1/10th of the suppliers charges !! And he appears to be well regarded and knows the answers.

He also supplies solar and said "if you want a cheap quote go else-where, he only fits quality setups that will work well." He estimated perhaps 5Kw would feed back OK. As has been said it is to do with the resistance of the supply line from the road pole transformer. The supply is single phase from a three phase transformer that has two single phase and a three phase customer. Not SWER thank you. :lol:
Thanks any more feed back ? Jaahn
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Re: Grid feed in restrictions rural area !

Postby Bthree » Fri Sep 13, 2019 10:55 pm

can't read
Network = Powercor .. Retailer = Origin .. Installed Christmas 2008
Latronics PV-1200 feed by 8xTrina TSM DC-01 .. 170watt = 1360watts DC in .. 1096watts AC out .. 5+years later 990watts ac out
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Re: Grid feed in restrictions rural area !

Postby jaahn » Sat Sep 14, 2019 8:25 am

Bthree wrote:can't read

What does that mean ?? I can read and write it OK !
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Re: Grid feed in restrictions rural area !

Postby Bthree » Sat Sep 14, 2019 9:30 am

my error

But I can't did not see which state you were refering to so I askedthen reread the first post !
Network = Powercor .. Retailer = Origin .. Installed Christmas 2008
Latronics PV-1200 feed by 8xTrina TSM DC-01 .. 170watt = 1360watts DC in .. 1096watts AC out .. 5+years later 990watts ac out
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