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Author Topic: More PV @ Courtiestown  (Read 28084 times)
linesrg
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« Reply #330 on: April 21, 2019, 04:22:47 PM »

Good Afternoon All,

I was just responding to some pointers from nowty when I went and checked Sunny Portal and, bizarrely, in blazing sunshine, with export limitation in action the Sunny Island start discharging the battery?HuhHuhHuhHuh Confused - I know I am but it does prove that it is wired correctly at least.

Checking the Energy Balance page it may have been switching the kettle on at circa 1530 which triggered the system to kick start the batteries as per the second picture I've just added to this post

I think the main problem was related to the voltage of the battery bank. Having charged each module to circa 4.2V I was getting 58.2V when I hooked the batteries to the SI last night. Nominally 48V should be circa 55.2V so I guess 58.2V was too high.  Anyway whatever the system is now giving three green LED's and I'm a lot happier.

Charging of the new Growatt modules continues. Once this set is charged I'll hook them up to the SI and then take the currently operational Growatt offline and dismantle that battery pack.

Taking the Growatt offline will allow the Sunny Portal/ SHM 2.0 to fully understand PV generation at the property as currently all it sees is the Growatt discharging through an inverter, it doesn't know that the sun isn't causing it but must get very confused trying to work out where the energy is coming from.  Currently it is skewing the SHM prediction figures.

I also stuck a plug on the whizzo new Makita 9" grinder with a very shiny Diamond cutting wheel and lopped 7cm off the hearth stone to square it up ready for re-fitting.

Regards

Richard


* Screenshot 2019-04-21 at 16.05.49.png (387 KB, 2218x1204 - viewed 221 times.)

* Screenshot 2019-04-21 at 16.56.45.jpg (105.75 KB, 1280x850 - viewed 225 times.)
« Last Edit: April 21, 2019, 04:50:28 PM by linesrg » Logged

1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #331 on: April 21, 2019, 07:26:11 PM »

Good Evening All,

Lesson learnt here today - charging Growatt modules to 4.2V has kind of backfired so the ones I'm currently working on will only be taken to 4V only.

Now the back of the 'too high' voltage 'problem', as seen by the SI has been overcome the system is now working as intended. I've attached a picture of the system whilst I was working on making tea where the SI is making up the shortfall and trying to limit the import of electrickery from the grid.

I should get to bed earlier than 2 o'clock this evening (if you see what I mean).

Given SMA are a company deeply involved in the renewable energy field it is disappointing to see that the SI arrived with two large lumps of polystyrene top and bottom of the box, there must be an environmentally friendlier way of packaging these devices. They manage (or used to) 28kg of inverters in solely cardboard packaging??

Regards

Richard


* Screenshot 2019-04-21 at 19.11.35.png (341.52 KB, 2070x1336 - viewed 211 times.)
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #332 on: April 22, 2019, 07:33:43 AM »

Good Morning All,

I really do need to get out more me thinks (I know SWMBO thinks so).

I note that at 0200 this morning that the Growatt was discharging as shown by the attached Immersun image and the SI battery system was charging itself albeit briefly i.e one battery system charging the other. A very good example of too many systems confusing themselves.

Currently sat waiting to see when the SI system starts charging its batteries.......

Regards

Richard


* Screenshot 2019-04-22 at 07.44.15.png (85.18 KB, 642x954 - viewed 215 times.)

* Screenshot 2019-04-22 at 07.43.11.jpg (92.17 KB, 1280x802 - viewed 213 times.)
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #333 on: April 22, 2019, 08:02:19 AM »

Good Morning All (update),

YEE HAAA

I can now go out and plan how I'm going to set the batteries up.....

Regards

Richard


* Screenshot 2019-04-22 at 08.11.39.png (302.29 KB, 1948x1104 - viewed 192 times.)
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
andrewellis
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« Reply #334 on: April 22, 2019, 08:39:05 AM »


Currently sat waiting to see when the SI system starts charging its batteries.......


Ha so many ways to while away one's life.  Another favourite of mine is watching the robot mower with a cup of tea.  I  don't save as much time cutting over cutting the lawn as I should Tongue
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« Reply #335 on: April 22, 2019, 08:46:03 AM »

Andrew,

Being a literal (SWMBO would call it anal) person one has to ask what does your robot mower do with this cup of tea??? extrahappy

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
biff
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« Reply #336 on: April 22, 2019, 10:15:32 AM »

 Grin real excitement?
   Not that many years ago  I was trying to tame a 2kw Y/S wind turbine which had large oversized blades. I spent many cold hours with mine eyes glued to the amps and volt clocks. It was quite a buzz until a force 8+ came along and all hell would break loose. Back then I was crazy enough to lower it in a storm. That was genuine brown trouser stuff. Especially  when the west wind would hurl the turbine back up from about 15 ft down and then it would hesitate and fall back with a bang when it hit the end of the cable. As it was getting blown back up. I would reel in the cable with the up button on the joystick and then when it was falling back down I would press the out button and allow the clutch on the winch to take the weight as it was reeling out. Sooner or later it was going to go wrong and it did.
But boy..that was genuine excitement. There was one night that I arrived back inside the house with Holly.. Blackthorn  and Bramble thorns all over me in places I could not reach . IT was pelting down buckets in the pitch black and the torch could barley fix on the turbine which was clocking 3kw. Then the house inverter went off at 161 voltes and then it was Super Grandad to the rescue with torch and Joystick.  So the Turnip was down about 15ft and then an almighty heave came from the west. The turnip which was still going full bore rose up straight and I thought it might break the cable on the opposite side to the winch. SO I dived into the drain behind the winch at the base of the huge 30ft topped tree and scrabble about with the torch and the joystick in each hand. Shining the torch beam on the moving turbine head and working the joystick at the same time. I got away with it that night but eventually I made a mistake and the winch falied to take the weight of the falling Turbine . It was a really hard lesson. After that I always have a safety rope with weights on it that can pull the turbine  down in a force 8.
But PV. Is sweet and gentle. Especially  in strings of 140 volts..
Our present Y/S is a hard working but gentle soul with smaller blades that produce 1500watt quite effortlessly without a fuss and still catches all the summer thermals from the bog to the North.
Im a way it was great experience.  Certainly reckless and crazy but I got to realise and understand how to do it properly and safely even in high winds. Multiple guys and correct weights+a very powerful winch makes it safe.
I now work with a remote control that makes everything easier still .PV is brilliant  and easy to  live with.
    I just love wind Turbines and every thing about them.
      Biff
   
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Westie
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« Reply #337 on: April 22, 2019, 12:55:52 PM »


Currently sat waiting to see when the SI system starts charging its batteries.......


Ha so many ways to while away one's life.  Another favourite of mine is watching the robot mower with a cup of tea.  I  don't save as much time cutting over cutting the lawn as I should Tongue

What make is your robot mower? I'm impressed it can cut your grass and bring you a cuppa!  I want one Grin
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4kwp south facing array  SMA 4000TL grid connected.  2x30tube Navitron solar thermal panels (east/west). Arada 5kw S/C WBS. 25000Ltr underground rain water tank. KTM E-Bike  Cool
andrewellis
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« Reply #338 on: April 22, 2019, 04:09:15 PM »

What make is your robot mower? I'm impressed it can cut your grass and bring you a cuppa!  I want one Grin

Husqvarna.  Almost everything is better when someone else has done it for you! I paid extra for the tea service.
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linesrg
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« Reply #339 on: April 22, 2019, 09:03:37 PM »

Good Evening All,

Well that's another 95Ah of battery added so I'm at 201Ah in total now. Currently waiting for the SI to come back to life from the Standby mode it's in now. The Growatt is currently exporting but its days are limited now........

Regards

Richard


* IMG_3048.jpg (139.73 KB, 1280x960 - viewed 139 times.)
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #340 on: April 23, 2019, 05:48:46 PM »

Good Evening All,

The Growatt has now been 'retired' and 95Ah of battery dismantled and added to the others powering the SI.

What a work up changing the battery is on the software front. You can't just alter the capacity but need to de-install the existing battery and install a 'new' one which means changing assorted settings to 'con' the SI you have lithium-ion batteries attached have to be reset. Credit again to nowty whose settings I've used wholesale.

As nowty has pointed out the SI gets confused each time you reset the battery as it has to re-learn things. It is slightly disconcerting to see it state that the newly installed battery is only 50% SOC but this appears to be a default setting until it has time to assess things.

These newest batteries have red caps on the positive terminals and I also noted the PCB has a plastic sheet on the copper side. The aluminium dividing plate also is cut back deeper iwo the PCB than the older one I dismantled. This suggests that there must have been issues with PCB's shorting out on said aluminium plate??

Hopefully there is nothing more to do electrically. I know need to box these batteries in somewhat to contain any fire hazard and equally important prevent metallic things being dropped onto exposed busbars. I was leaning on the modules last night when my watch strap came into contact with the support strapping of the modules and I thought I shouldn't be wearing this in such close proximity to exposed busbars......... All I'm going to say is that I am going to put some heat shrink sleeving on the Battery Temperature sensor - frankly I'm amazed it survived the shorting experience.....

Regards

Richard


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* Screenshot 2019-04-23 at 17.35.32.jpg (84.57 KB, 1280x754 - viewed 112 times.)
« Last Edit: April 23, 2019, 06:36:46 PM by linesrg » Logged

1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
linesrg
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« Reply #341 on: April 23, 2019, 10:01:11 PM »

Good Evening All,

Finally the SI is doing what it should and powering the house............. Next point of interest will be to see how the system decides to re-charge the battery in due course.

Regards

Richard


* Screenshot 2019-04-23 at 22.05.03.png (307.97 KB, 2180x1174 - viewed 103 times.)
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
linesrg
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« Reply #342 on: April 24, 2019, 07:48:45 AM »

Good Morning All,

That's the house been run off the batteries since 2230 last night including the dishwasher and the heat pump kicking in a couple of times (it's now 0800 o'clock).

Next up will be watching how the system decides to re-charge said batteries, it isn't going to be an overly sunny day up here.

As I have previously stated the Sunny Portal system has never seen the Solar PV at the property performing properly because the Growatt has always stood between it and knowing what was really going on so any forecasts of impending production will currently be skewed negatively.

Added bit - The SI also stops the export of electrickery and charges the battery so the Immersun will now have to wait it's turn to divert any spare electrickery. Previously it used to do its own thing as did the Growatt so the system has to 'learn' this as well.

Looking at the graphs I must investigate why they seem to be an hour behind, I know I'm getting an error message when I update the SI through Sunny Explorer.

Regards

Richard


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* Screenshot 2019-04-24 at 07.55.53.jpg (107.39 KB, 1280x956 - viewed 89 times.)
« Last Edit: April 24, 2019, 08:45:53 AM by linesrg » Logged

1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
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« Reply #343 on: April 25, 2019, 10:52:26 AM »

Good Morning All,

Logged on to Sunny Portal to see how the overnight Economy 7 charging of the batteries went and was slightly concerned to see that there was a 1 1/2hr drop out from 0330 and then other smaller ones. Having gotten back out to the house I see our DNO must be having problems over a wider area and I'm currently sat here with no power and relying on the Hotspot on my iPhone for internet access.

Now thinking I should have wired my SI like nowty to incorporate the Back-up function.........

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
andrewellis
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« Reply #344 on: April 25, 2019, 11:04:44 AM »

Having gotten back out to the house I see our DNO must be having problems over a wider area and I'm currently sat here with no power and relying on the Hotspot on my iPhone for internet access.

Didn't you tell me only 3 days ago that you haven't had power cuts since you moved in! Doh!
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6.48kw Solar PV JA (300W)Panels, SolarEdge inverter
Borehole -> Nibe F1255 12kw GSHP -> Radiators
Nissan Leaf
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