Introduction
15
Priority
feed in
tari
mode
The charging and discharging strategy of EMS battery:
This mode is suitable for the application scenarios with high electricity price
and internet subsidy. If this mode is selected, the PV should be oversized
and good lighting conditions are needed, otherwise the battery will have
less charging opportunities and be prone to power loss. This mode requires
the installation of an electric meter.
1. The PV power is preferentially fed to the grid. The battery can be charged
and discharged, but it can only be charged when the PV power is greater
than the rated power of the inverter.
2. When the PV power is less than the load power, the battery is discharged
to make the inverter output power equal to the load power.
3. Electricity meter data is required in this state, and zero-export enabling is
invalid.
4. In this state, the battery reserve SOC needs to be set. When the battery
reaches this SOC level, it will stop discharging. This SOC value can be set;
5. If the battery power is lower than the minimum SOC value (the preset
value), the battery is forced to be charged to the reserved SOC.
Notes:
* PV power < load power < inverter rated power, battery discharge power
value = [PV power-load power].
* PV power > load power < inverter rated power, battery charging and
discharging power value = 0.
* PV power < load power > inverter rated power, battery discharge power
value = [PV power-inverter rated power].
* PV power > load power > inverter rated power, battery charging power
value = PV power-inverter rated power.
■ Priority feed in tari mode
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