Huawei LUNA2000-200KWH-2H1 Smart String ESS User Manual page 146

LUNA2000-200KWH-2H1 Smart String ESS
User Manual
Issue 02 (2023-02-28)
Working mode
TOU
Scheduled Charge/
Discharge
Copyright © Huawei Digital Power Technologies Co., Ltd.
10 SmartLogger Web-based Deployment
Description
– Applies to optical storage systems and pure
storage systems with price differences
between peak and off-peak hours.
– You can manually set the charge and
discharge time segments to lower the
electricity cost. You need to enable Fed to
grid in Battery control. When the electricity
price is low at night, the power grid charges
the batteries. When the electricity price is
high, the batteries discharge to supply power
to the loads.
– Click Add to set the charge/discharge time. A
maximum of 14 time segments are allowed.
During the charging period, the power grid
charges the batteries, and during the
discharging period, the batteries discharge to
supply power to the loads. In other time
segments that are not set, the ESS does not
discharge, and the PV modules and grid
supply power to the loads. (In grid-tied/off-
grid mode, if the grid fails, the ESS can
discharge at any time.)
– In some countries, the grid is not allowed to
charge batteries. In such case, this mode
cannot be used.
– The SmartLogger performs battery
scheduling based on the external scheduling
power limit and the preceding policies.
– This mode applies to ground power plant
scheduling scenarios.
– In scheduled discharge, the AC output aims
to reach the target value of the scheduled
active power: PV power supply is prioritized.
If the PV power is insufficient, the batteries
supply power to loads; if the PV power is
sufficient, the system outputs at the target
value and the excess PV power is used to
charge the batteries.
– In scheduled charge, the AC output aims to
reach the target value of the scheduled
active power: If the battery power is
insufficient or the Smart PCS is limiting
power, the system gets power from the grid
as much as possible; if the scheduling target
is met and the battery has excessive power,
the PV power is used to charge the batteries.
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