Introduction
14
■ Surplus feed in tari mode
Surplus
feed in
tari
mode
The charging and discharging strategy of EMS battery:
This model is suitable for the application scenarios where the electricity
price is high, the surplus electricity is allowed to access the Internet, and
there is less subsidy for accessing the Internet. The residual electricity here
refers to the amount of electricity that PV needs to charge the battery and
load. This mode requires the installation of an electric meter.
1. The only dierence between this mode and Self consumption mode is
that when PV power > battery charging power+load power, PV does not
limit power, but feeds surplus power into the power grid;
2. In this state, electricity meter data is needed, and zero-export is invalid,
allowing power to be fed into the power grid (the percentage can be set).
3. 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.
4. If the battery power is lower than the minimum SOC value (which can be
set), the battery is forced to be charged to the reserved SOC.
Notes:
- Same as Self consumption mode.
- When the PV power > [battery charging power value+load power], the
remaining power is fed into the power grid
.
Full feed
in tari
mode
The charging and discharging strategy of EMS battery:
This mode is suitable for application scenarios with high Internet subsidies.
Selecting this mode alone does not need to install an electric meter, but
the PV should be oversized and good illumination is needed, otherwise the
battery will not have a charging opportunity.
Notes:
* PV power > inverter rated power, battery charging power value = PV
power-inverter rated power;.* PV power < inverter rated power, battery
discharge power value = [PV power-inverter rated power].
■ Full feed in tari mode