Huawei LUNA2000 - Pure Off-grid ESS

Parameter Description Value Range
Backup power
SOC
Sets the backup power SOC. In grid-tied
mode, the bat
tery does not discharge when
it is discharged to the backup power SOC.
When the grid fails, loads are powered in
backup mode.
[0, 50%]
Grid-tied/O-
grid mode
switching
If this parameter is set to Automatic
switching, the system switches to the o-
grid mode when the grid fails, and switches
to the grid-tied mode when the grid
recovers.
● Automatic
switching
● Manual
switching
Set
ting a Working Mode
The grid-tied and o-grid ESS mode can be used together with the self-
consumption or time-of-use mode. Enable O-grid mode during site deployment.
For details about how to set the self-consumption or time-of-use mode, see 3.1.2
Setting the Grid-tied ESS Mode.
3.3 Pure O-grid ESS
The pur
e o-grid ESS is mainly used in the scenario where there is no grid and the
sy
stem operates in pure o-grid mode. The pure o-grid ESS stores the generated
PV ener
gy in batteries and supplies power to loads when the PV energy is
insucient or there is no PV energy at night.
3.3.1 Pure O-grid ESS Networking
The pur
e o-grid ESS consists of the PV strings, LUNA2000 batteries, inverter, AC
switch, and load. In o-grid mode, PV strings and batteries must be congured.
The pure o-grid ESS supports only a single inverter and does not support parallel
c
onnection of inverters.
LUNA2000-(5-30)-S0
User Manual 3 Application Scenarios and Settings
Issue 01 (2020-10-20) Copyright © Huawei Technologies Co., Ltd. 33