Hi,
I have had solar installed and the installer has not changed the default settings of my inverter to those of my DNSP that allow a bit more headroom with voltage. Adjusting it to my DNSP recommend settings would avoid most instances of volt watt limiting. Does anyone have any suggestions? I have had little success in getting the installer back.
If you're willing to PM me the PROFI access code, I promise not to tell anyone or enter anything other than my DNSP settings. I value my house, life and don't like magic smoke.
DNSP settings
Can you please let us know which DNSP and the DNSP voltage values for V1, V2, V3, V4 and the corresponding DNSP VAR % of rated VA or power factor values for V1, V2, V3 and V4? Then I can post a table where I attempt to calculate the Q setting range % which you would need.
For example, from Ausgrid NS194:
| Reference | Voltage | VAR % of rated VA | Power factor |
|-----------+---------+-------------------+--------------|
| V1 | 207 | 60% leading | 0.8 leading |
| V2 | 220 | 0 | Unity |
| V3 | 248 | 0 | Unity |
| V4 | 258 | 60% lagging | 0.8 lagging |
Edit: fixed explanation and provided example.
Setting Volt-Var for Fronius inverters is explained in this video:
https://www.youtube.com/watch?v=X8tsQhp7hM0
The following are emacs org mode tables where I have tried to calculate the Fronius setting from V1 V2 V3 V4 and PF1 PF2 PF4 PF4 set points.
I think it is likely that the smart meters will monitor the voltage and power factor.
Powercor:
| | Voltage | V | Power | PF | Q(U) Set points on | Q Setting |
| | settings | | factor | value | Fronius inverters | |
|---+----------+-----+--------+-------+--------------------+-----------|
| # | 0 = V1 | 208 | PF1 | 0.9 | Ch Q (U) 0-0 | 90.43 |
| # | | | | | Ch Q (U) 0-1 | 43.59 |
| # | 1 = V2 | 220 | PF2 | 1 | Ch Q (U) 1-0 | 95.65 |
| # | | | | | Ch Q (U) 1-1 | 0.00 |
| # | 2 = V3 | 241 | PF3 | 1 | Ch Q (U) 2-0 | 104.78 |
| # | | | | | Ch Q (U) 2-1 | 0.00 |
| # | 3 = V4 | 253 | PF4 | -0.9 | Ch Q (U) 3-0 | 110.00 |
| # | | | | | Ch Q (U) 3-1 | -43.59 |
| # | | | | | | |
#+TBLFM: @3$7=100.0*@3$3/230;%.2f::@5$7=100.0*@5$3/230;%.2f::::@7$7 =100.0*@7$3/230;%.2f::::@9$7 =100.0*@9$3/230;%.2f::@4$7=1 00.0*sign(@3$5,cos(arcsin(@3 $5)));%.2f::@6$7=100.0*sign( @5$5,cos(arcsin(@5$5)));%.2f ::@8$7=100.0*sign(@7$5,cos(a rcsin(@7$5)));%.2f::@10$7=100.0*sign(@9$5, cos(arcsin(@9$5)));%.2f
Some example values (might be used by SA Power, Ergon and Energex):
| | Voltage | V | Power | PF | Q(U) Set points on | Q Setting |
| | settings | | factor | value | Fronius inverters | |
|---+----------+-----+--------+-------+--------------------+-----------|
| # | 0 = V1 | 207 | PF1 | 0.95 | Ch Q (U) 0-0 | 90.00 |
| # | | | | | Ch Q (U) 0-1 | 31.22 |
| # | 1 = V2 | 220 | PF2 | 1 | Ch Q (U) 1-0 | 95.65 |
| # | | | | | Ch Q (U) 1-1 | 0.00 |
| # | 2 = V3 | 250 | PF3 | 1 | Ch Q (U) 2-0 | 108.70 |
| # | | | | | Ch Q (U) 2-1 | 0.00 |
| # | 3 = V4 | 253 | PF4 | -0.90 | Ch Q (U) 3-0 | 110.00 |
| # | | | | | Ch Q (U) 3-1 | -43.59 |
| # | | | | | | |
#+TBLFM: @3$7=100.0*@3$3/230;%.2f::@5$7=100.0*@5$3/230;%.2f::::@7$7 =100.0*@7$3/230;%.2f::::@9$7 =100.0*@9$3/230;%.2f::@4$7=1 00.0*sign(@3$5,cos(arcsin(@3 $5)));%.2f::@6$7=100.0*sign( @5$5,cos(arcsin(@5$5)));%.2f ::@8$7=100.0*sign(@7$5,cos(a rcsin(@7$5)));%.2f::@10$7=100.0*sign(@9$5, cos(arcsin(@9$5)));%.2f
Ausgrd (from NS194):
| Reference | Voltage | VAR % of rated VA | Power factor |
|-----------+---------+-------------------+--------------|
| V1 | 207 | 60% leading | 0.8 leading |
| V2 | 220 | 0 | Unity |
| V3 | 248 | 0 | Unity |
| V4 | 258 | 60% lagging | 0.8 lagging |
Ausgrid:
| | Voltage | V | Power | PF | Q(U) Set points on | Q Setting |
| | settings | | factor | value | Fronius inverters | |
|---+----------+-----+--------+-------+--------------------+-----------|
| # | 0 = V1 | 207 | PF1 | 0.8 | Ch Q (U) 0-0 | 90.00 |
| # | | | | | Ch Q (U) 0-1 | 60.00 |
| # | 1 = V2 | 220 | PF2 | 1 | Ch Q (U) 1-0 | 95.65 |
| # | | | | | Ch Q (U) 1-1 | 0.00 |
| # | 2 = V3 | 248 | PF3 | 1 | Ch Q (U) 2-0 | 107.83 |
| # | | | | | Ch Q (U) 2-1 | 0.00 |
| # | 3 = V4 | 258 | PF4 | -0.8 | Ch Q (U) 3-0 | 112.17 |
| # | | | | | Ch Q (U) 3-1 | -60.00 |
| # | | | | | | |
#+TBLFM: @3$7=100.0*@3$3/230;%.2f::@5$7=100.0*@5$3/230;%.2f::::@7$7 =100.0*@7$3/230;%.2f::::@9$7 =100.0*@9$3/230;%.2f::@4$7=1 00.0*sign(@3$5,cos(arcsin(@3 $5)));%.2f::@6$7=100.0*sign( @5$5,cos(arcsin(@5$5)));%.2f ::@8$7=100.0*sign(@7$5,cos(a rcsin(@7$5)));%.2f::@10$7=100.0*sign(@9$5, cos(arcsin(@9$5)));%.2f
Thanks that's very helpful. I had already watched that fronius video. Smart meters should be able to monitor voltage and power factor. This would make managing the distribution network far easier. However, they have to install temporary monitoring in response to queries of out of spec voltage, so I'm not sure that they can. I am not going to give my smart metre anything it (or powercor) won't like.
I have had the updated DNSP settings in my inverter for a few days and have had no more state 567 notices. This is when GVDPR (grid voltage dependant power reduction) is active. I found a guide on how to input the settings for my distributer, but the maths is easy anyway (https://www.pure-electric.co
Hi GeoQuack,
I am facing the same issue with my Fronius Primo, heaps of 567 errors each day and up to 15 inverter restarts each day. I am also finding hard to get my installer come and configure this for me plus Fronius isn’t willing to help me over the phone call, they said they’ll only help a licensed installer with the instructions and the Access code.
Do you mind helping me “please”? I am also on PoweCor so may be your settings will work for me as well. Please feel free to PM me if you are not comfortable sharing the settings/access code here. I promise, I’ll not share it with anyone else.
Thanks in advance!