Sungrow SH3K6 - PV Energy Storage System (PV ESS)

User Manual 2 System Solution
11
 The single-phase Energy Meter and the three-phase Energy Meter
are alternative in the delivery. The Energy Meter figures in this
document have been created for the three-phase Energy Meter
unless otherwise specified.
 More detailed information on the Energy Meter can be found in the
respective Quick Installation Guide.
2.1 PV Energy Storage System (PV ESS)
With a battery module for the immediate storage of energy, the conventional PV
system can be upgraded to be a PV ESS.
A B C D
E
Export power Output power PV power
Load power
F
Battery power
S
E
T
Fig. 2-6 PV Energy Storage System (PV ESS)
Tab. 2-2 System Compositions
Item
Description
Remark
A
Utility grid
Grid grounding system types: TT, TN
B
Sungrow single-phase or
three-phase Energy Meter
Measures the export power and
communicates with the inverter via the
RS485 port.
C
Inverter
SH3K6 / SH4K6.
D
PV strings
Monocrystalline silicon, polycrystalline
silicon, and thin-film without grounding.
E
Household load
Devices that consume energy.
F
Battery (optional)
A Li-ion battery or a lead-acid battery.
Energy Management during Daytime
The energy management system (EMS) works in self-consumption by default.
The PV power will go to the house first, then the battery. Then if the battery is
fully charged the excess will go to the grid, the export power should not be more
than the limit value set in commissioning.