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Updated27/03/2017 03:30 
 


Solar PV Generation - Live Performance Data






There are few software solutions to gaining access to the inverter data, all require the use of a pc. The inverter comes with Aurora Communnicator CD pdf manual, there is also Aurora Monitor, a Java application, Aurora Monitor and a command-line program for Linux Aurora

My aim was to write php scripts to run on the server, which will do away with the need for a home pc, the script is called by a cron job every 2 mins, generate the data as seen below and also produce graphs. See the eNet-232 Ethernet to Serial converter section below for more information.

20-11-2016 - PAY BACK approx 09:30 took 4 years 9 months 17 days, based on FIT payments only


Newquay Weather - Solar PV Generation

SkyCam - North
Power One 3.6 PVI OUTD
Inverter Status - OFFLINE
27 March 2017 Sunrise : 07:06 Sunset : 19:45
Max Daylight Hours : 12:37 hours 11  
Inverter Data : Updated Every 2 Minutes
1 - Week starts Sunday
2 - install date 4/2/2012
3 - Slight difference of 40 W
4 - UK Model (G83)
5 - For other codes see manual
6 - Data entered manually, inverter data
7 - Efficiency, power out / string total %
8 - GMT all year
9 - Alarms Checked 0800,1200,1600,2000
    Reset after check
10 - C02 conversion factor is
     0.542 kg CO2 saved per kWh
11 - Time between sunrise and sunset
12 - Handheld Tenmars TM-207 solar
      power meter
13 - Immersion heater - Solar pv
Last Update 26-03-2017 19:36 String 1 0 W Grid Voltage 247.4 V
Generation Start Time 26-03-2017 07:20   123 V Av Grid Voltage 246.4 V
Generation Stop Time 26-03-2017 19:24   0.0 A Grid Current 0.1 A
Energy Today inverter data 19.623 kWh String 2 0 W Grid Freq 49.9 Hz
Energy Week 1 19.623 kWh   209 V Peak Power Today 2948 W
Energy Month 192.961 kWh   0.0 A Peak Power Ever 4 3627 W
Energy year 2 465.441 kWh Total 0 W Internal Temp 28.1 C
Energy lifeTime 3 21305.478 kWh Power Out 0 W Isolation Resistance 20.00 MΩ
Min Day Energy 6 10/12/2016 - 27 W Efficiency 7 - % Dc/Dc Current Leak 0 mA
Max Day Energy 6 8/6/2015 - 28.9 kW     Inverter Current Leak 0 mA
Solar Radiation 12 8-04-2015 11:44 784.4 W/m2 3552 W Inverter Time 8 18:35
Immersion Heater 13 new 26-03-2017 14:10 OFF     CO2 Saved Year10 252 kg
Alarm Code 5 No Alarm     CO2 LifeTime10 11548 kg
Last 4 Alarms Codes 9 Last check 1600 0 0 0 0
Last Alarm Code 26-03-2017 07:10, 11 Bulk UV
Note : Whilst inverter self testing it may return false data

Alarm codes in pop up window Here Some alarm codes shown only on Aurora display panel.

Solar Graphs available from 12th February 2012.

Default todays graph if available

Latest -
28-2-2017 - Installers faulting string 1, found 2 faulty panels, others have low readings
Only 6 panels connected string 1

12-1-2017 - Installers Faulting, Inverter OK, panel checking tomorrow
20-11-2016 - PAY BACK approx 09:30 took 4 years 9 months 17 days
13-9-2016 - String 1, faulty low Riso all day 0.62 MOhm
4-7/9/2016 - String 1, faulty, Risco below 1 mohm, wet, back online when drier in day
12/8/2016 - Cornwall Solar on site, faulting string 1 panels
2/8/2016 - Rain for hours, string 1 Riso 0.39 mOhm, switched off
19-22/2/2016 - String 1 still faulty when wet, string 2 fixed
18/2/2016 - Engineers onsite, faulting, fault loose connection in inverter
13/2/2016 - Ground fault, both strings, inverter switched off
4/1/2016 - Cornwall Solar - String One faulty, 1 mOhm, 20 mA, disconnected, waiting for
        date to replace connectors on roof
3/1/2016 10:30 Back on, Risco and leakage within limits
2/1/2015 08:30 Inverter tripping fuse box, low Risco and leakage, switched off
22/12/2015 - Tripped Fusebox - Cornwall solar rang to book visit, 12mA leakage, reset OK
24/7/2015 - Inverter offline, low riscoe alarm 0.57 Mohm, cleared 08:46
30/1/2015 - Added monthly total and daily average to month graph
7/12/2014 - Broadband down no data collected
4/7/2013 - Inverter replaced, see issues on inverter page from menu
29/6/2013 - Immersion heater now using solar pv
31/5/2013 - New month peak 576 kwh, beat last years monthly May high of 552 (inverter data)
26/5/2013 - New Max peak (generation meter)of 28.2 kwh, beating same day last year of 28.0.
Today also made 25% return
25/5/2013 - Matched the max energy generated 28 kwh of May 26th 2012
6/5/2013 - Energy generated for year and month (May) corrupted / lost on inverter,
              managed to get data from backup and add to inverter data

Solar PV Log Full list

Todays PV output

Select a monthly Solar PV graph



201703

Month and Year graph now updated every 2 minutes





2016 Data Graph, updated end of day

Hover mouse over for data

Chart.


Yearly Comparison Graph

Hover mouse over for data - live date 4th Feb 2012
Chart.






Shading of photovoltaic panels is one of the most significant causes of losses in a pv system. In fact, the shading of 10% of the area of a system could cause a loss of 50%. This disproportionate effect is caused by string design. If there is one shaded panel in the string, the whole string underperforms.

System consists of:-

Panels: 16 Suntech STP250S (250 watts)
Inverter: Power One PVI3.6 OUTD
Roof Angle: 32
Direction: -30 (30 east of south)
Shading: Palm tress, removed
Partial shading winter, string 2

System Live: 4th February 2012, approx 2pm
inverter
PVI3.6 Inverter mounted in garage.
pv panel
Suntech STP250S
The eNet-232 Ethernet to Serial converter
The Aurora Power One 3.6 OUTD inverter has a usb port and more importantly a RS485, we need network access for the php scripts on the server so we need an RS 485 to ethernet converter. The eNET-232 Audon Electronics has a two serial ports, one RS232 and the other can be a RS232/422/485 RS485 port. We need the RS 485 option, easy to set up, 3 wires to strip block in inverter to enet 232 strip block wired straight, T-, T+, GND.

The configuration software for the enet232 can be downloaded from the Audon site
converter
The enet-232 Ethernet to Serial converter.

Cornwall Solar Panels

I highly recommend them, planned and fitted with first class service from a local company.

Give them a call and please mention Newquay Weather.
cornwall solar panels