Grid-tied ESS Networking

Networking 1: Inverter + Batteries

The grid-tied ESS consists of the PV strings, LUNA2000 batteries, inverter, AC switch, load, power distribution unit (PDU), Smart Power Sensor，and grid.

The SUN2000-(2KTL–6KTL)-L1 or SUN2000-(3KTL–10KTL)-M1 inverters are supported.

The PV string converts solar energy into electric energy, which is then converted by the inverter into power for loads and then fed to the power grid.

Networking 2: Inverter (with Batteries) + Inverter (Without Batteries)

The grid-tied ESS supports inverter cascading. A maximum of three inverters can be cascaded. The batteries can be connected to one of the inverters for management. The batteries, power meter, and Smart Dongle need to be connected to the same inverter.

Figure 3-2 Inverter (with batteries) + inverter (without batteries) (dashed boxes indicate optional components)

When the grid charging function is enabled, the surplus power generated by the inverter without batteries can be used to charge the inverter connected to the batteries.

Networking 3: Inverter (with Batteries) + Inverter (with Batteries)

When the capacity requirement is high, you can add inverters and batteries. A maximum of three inverters can be cascaded. Each battery connects to the inverter through an independent RS485 port and is managed by the inverter connected to it.

Figure 3-3 Inverter (with batteries) + inverter (with batteries) (dashed boxes indicate optional components)