Grid-Tied And Off-Grid Ess; Grid-Tied And Off-Grid Ess Networking - Huawei LUNA2000-5-S0 User Manual

LUNA2000-(5-30)-S0
User Manual
Table 4-13 Grid-tied and off-grid parameter setting
Parameter
Off-grid mode
Backup power
SOC
Grid-tied/Off-
grid mode
switching
Setting a Working Mode
The grid-tied and off-grid ESS mode can be used together with the self-
consumption or TOU (time-of-use) mode. Enable Off-grid mode during site
deployment. For details about how to set the self-consumption or TOU (time-of-
use) mode, see

4.3 Grid-tied and 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.

4.3.1 Grid-tied and Off-grid ESS Networking

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Issue 15 (2024-01-12)
Description
If this parameter is set to Enable, the ESS
switches to the off-grid mode when the grid
fails.
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%.
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.
4.1.2 Setting the Grid-tied ESS
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.
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4 Application Scenarios and Settings
Value Range
● Enable
● Disable
[0%, 100%]
● Automatic
● Manual
Mode.
switching
switching
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