Huawei LUNA2000-2.0MWH-1H0 User Manual page 132

LUNA2000-2.0MWH-1H0, 2H0 Smart String ESS
User Manual
Issue 02 (2021-11-15)
Working Mode
Time Of Use
Scheduled charge/
discharge
Copyright © Huawei Technologies Co., Ltd.
8 SmartLogger Web-based Deployment
Description
– This mode applies to scenarios where the
price difference between peak and off-peak
hours is large.
– 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 can be set.
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 batteries do
not discharge, and the PV modules and grid
supply power to the loads. (In grid-tied/off-
grid mode, if the grid fails, the batteries can
discharge at any time.)
– In some countries, the grid is not allowed to
charge batteries. Therefore, 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 scheduling scenarios in
ground-mounted plants.
– 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 sufficient, the system
outputs at the target value and the excess PV
power is used to charge the batteries. If the
PV power is insufficient, the batteries
supplies power.
– In scheduled charge, the AC output aims to
reach the target value of the scheduled
active power: If the battery charging power is
insufficient or the PCS power is limited, the
grid supplies power. If the batteries have
excess power, PV power is used to charge the
batteries.
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