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Updated23/01/2018 11:45 
 


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.

5-4-2017 - 8 Suntech panels string 1, being replaced with 7 LG panels from 08:42 to 11:06
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 - ONLINE
23 January 2018 Sunrise : 08:04 Sunset : 17:00
Max Daylight Hours : 08:51 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 23-01-2018 11:50 String 1 132 W Grid Voltage 241.1 V
Generation Start Time 23-01-2018 08-46   215 V Av Grid Voltage 241.3 V
Generation Stop Time ---   0.6 A Grid Current 0.7 A
Energy Today inverter data 0.467 kWh String 2 113 W Grid Freq 50.1 Hz
Energy Week 1 3.977 kWh   235 V Peak Power Today 443 W
Energy Month 87.567 kWh   0.6 A Peak Power Ever 4 3627 W
Energy year 2 87.567 kWh Total 245 W Internal Temp 23.8 C
Energy lifeTime 3 24794.549 kWh Power Out 224 W Isolation Resistance 2.04 MΩ
Min Day Energy 6 10/12/2016 - 27 W Efficiency 7 91.43 % Dc/Dc Current Leak 8.8 mA
Max Day Energy 6 8/6/2015 - 28.9 kW     Inverter Current Leak 7.7 mA
Solar Radiation 12 8-04-2015 11:44 784.4 W/m2 3552 W Inverter Time 8 11:52
Immersion Heater 13 new 22-01-2018 11:26 OFF     CO2 Saved Year10 47 kg
Alarm Code 5 No Alarm     CO2 LifeTime10 13439 kg
Last 4 Alarms Codes 9 Last check 1600 0 0 0 0
Last Alarm Code 22-01-2018 08:00, 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 -
12-1-2018 - WS2300 Weather station changed to Davis VP2 Pro, which isn't affected by leakage

22-12-2017 - String 2 causing gust spikes on weather station when leakage 0ver 6mA, turned off when bad
2-11-2017 - Fault Found on string 1, connector termination fault
23-10-2017 - 2-11-2017 Ongoing - String 1, faulty, off line alot , ground fault, less than 1 MOhm
21-9-2017 - New LG panels, string 1 ground fault, 0.2 MOhm, Online 11:42
17-8-2017 - String 1 ground fault, 0.48 MOhm, Online 08:58
26-7-2017 - New LG String 1, ground fault 1.11 MOhm, string 2, 20 MOhm. Online 08:44
now string 1, 2.55 MOhm
5-4-2017 - 08:42 to 11:06 string 1, 8 SunTech panels replaced with 7 LG panels
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

Solar PV Log Full list

Todays PV output

Select a monthly Solar PV graph



Month and Year graph now updated every 2 minutes





2017 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 at installation 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

Update 5th April 2017
Panels : 8 faulty SunTech panels (string 1)
replaced with 7 LG285S1C-L4 panels.
:
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.

Naked Solar - Formerly 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