Parameter
Description
Value Range
Backup power
SOC
Sets the backup power SOC. In grid-tied
mode, the battery does not discharge when
it is discharged to the backup power SOC.
When the grid fails, loads are powered in
backup mode. The Backup power SOC
parameter has a higher precedence over the
End-of-discharge SOC parameter. For
example, if the End-of-discharge SOC
parameter is set to 10% and the Backup
power SOC parameter is set to 20%, the
battery stops discharging when the battery
SOC reaches 20%.
。
[0%, 100%]
Grid-tied/Off-
grid mode
switching
If this parameter is set to Automatic
switching, the system switches to the off-
grid mode when the grid fails, and switches
to the grid-tied mode when the grid
recovers.
● Automatic
switching
● Manual
switching
Setting a Working Mode
The grid-tied and off-grid ESS mode can be used together with the self-
consumption or time-of-use mode. Enable Off-grid mode during site deployment.
For details about how to set the self-consumption or time-of-use mode, see
Setting the Grid-tied ESS Mode
3.3 Pure Off-grid ESS
The pure off-grid ESS is mainly used in the scenario where there is no grid and the
system operates in pure off-grid mode. The pure off-grid ESS stores the generated
PV energy in batteries and supplies power to loads when the PV energy is
insufficient or there is no PV energy at night.
3.3.1 Pure Off-grid ESS Networking
The pure off-grid ESS consists of the PV strings, LUNA2000 batteries, inverter, AC
switch, and load. In off-grid mode, PV strings and batteries must be configured.
The pure off-grid ESS supports only a single inverter and does not support parallel
connection of inverters.
Optimizer is not supported in the pure Off-grid ESS Networking. Otherwise, the
system may fail to start.
LUNA2000-(5-30)-S0
User Manual
3 Application Scenarios and Settings
Issue 07 (2022-01-10)
Copyright © Huawei Technologies Co., Ltd.
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