So we got grid connected and trying to AC couple / Export to Grid
trying with 1x test unit first before doing all the parallel units
tried for a few days now as soon as ESS is installed through ve config the Grid tied inverters that were working AC coupled with the PV inverter assistant installed stop working
yes all the other assistants have been since removed I wish I backed them up
I can see the output hz going from ~48hz to 53+ hz so the inverters refuse to start up because they are faulting
if I use ve config , it shows Grid is connected 50.1hz stable and 240v stable
if I use VenusOS is says grid is disconnected and just draws power from battery
multiple relays are constantly flipping
I can not find any option inside ESS to enable AC2
edit this is apparently because grids refusing to connect
(before I just had relay assistant keep AC2 permanently on )
gave up getting AC2 output to work and moved AC coupled Inverters over to AC1
I tried lowering freq shift cutoff hz to 52.9 so it did not pass the 53hz threshold and AC coupled inverters still refused to sync
last config was like this
TAB: General
System frequency 50Hz
Shore current 10.0 A
Overruled by remote checked
Dynamic current limiter unchecked
External current sensor connected (see manual) unchecked
State of charge when Bulk finished 85.0 %
Battery capacity 190 Ah
Charge efficiency 0.80
TAB: Grid
Country / grid code standard Australia A: AS/NZS 4777.2:2020 stand alone app. M (with N-bypass)
AC input 1 Above selected gridcode plus LOM B (compliant)
TAB: AS/NZS4777.2:2020 Australia A (Stand alone appendix M)
Volt-Watt curve voltage V1 207.0 V
Max charge power at V1 20 %
Volt-Watt curve voltage V2 215.0 V
Max charge power at V2 100 %
TAB: Inverter
PowerAssist unchecked
Inverter output voltage 240 V
Inverter DC shut-down voltage 46.00 V
Inverter DC restart voltage 48.00 V
Low DC alarm level 48.00 V
Do not restart after short-circuit (VDE 2510-2 safety) unchecked
enable AES unchecked
TAB: Charger
Enable charger checked
Weak AC input unchecked
Stop after excessive bulk unchecked
Lithium batteries unchecked
Storage mode unchecked
Use equalization (tubular plate traction battery curve) unchecked
Charge curve Adaptive + BatterySafe
Absorption voltage 57.60 V
Float voltage 55.20 V
Charge current 70 A
Repeated absorption time 1.00 Hr
Repeated absorption interval 7.00 Days
Maximum absorption time 5 Hr
Temperature compensation -64.8 mV/deg
TAB: Virtual switch
TAB: Usage
Virtual switch usage Do not use VS
TAB: Assistants
TAB: Assistant Configuration
ESS (Energy Storage System) (size:1835)
*) System uses Gel or AGM batteries
*) The battery capacity of the system is 190 Ah.
*) Sustain voltage during the first 24 hours of sustain 48.00 V.
Sustain voltage after 24 hours 50.00 V.
*) Cut off voltage for a discharge current of:
0.005 C= 48.00 V
0.25 C= 46.60 V
0.7 C= 45.60 V
2 C= 44.80 V
*) Inverting is allowed again when voltage rises 1.20 V above cut-off(0).
*) Restart PV Inverters when the DC voltage becomes lower than 56.00 V.
*) The solar converter will start reducing its output power at 50.20 Hz.
Output power will be reduced to minimum when the frequency is 52.70 Hz.
The converter will disconnect when the frequency is higher than 53.00 Hz.
*) Total installed PV inverter power is 2500 Watts.
Total installed PV panel power is 2500 Watts.
*) Relevant VEConfigure settings:
- Battery capacity 190 Ah.
- PowerAssist unchecked
- Lithium batteries unchecked
- Dynamic current limiter unchecked
- Storage mode unchecked
Total size of all assistants including the required
(hidden) system assistants is: 1908
bad enough I bought a mk3 usbc thinking I could configure from just using a phone , but nope app does not allow configuration so had to go and buy another laptop so I could install windows just to use ve config
victron.wtf.vsc (5.9 KB)
anyone in QLD AU know the correct settings ?
or why the output hz is like this
