Huawei SDongleA-05 - Page 44

Parameter Description
Grid
connection
with limited
power (kW)
Closed-loop
controller
● SDongle/
SmartLogger
● Inverter
● For a single inverter, set Closed-
loop controller to Inverter.
● For multiple inverters, Closed-
loop controller can only be set to
SDongle/SmartLogger.
Limitation mode ● Total power
● Single-phase power
● When this parameter is set to
Total power, no backfeeding
occurs on the three phases.
● When this parameter is set to
Single-phase power, no
backfeeding occurs on the phase
with the maximum power.
PV plant capacity N/A Species the total maximum active
power in the inverter cascading
scenario.
Maximum grid
feed-in power
(kW)
N/A Species the maximum active power
transmitted from the grid-tied point
to the power grid.
Power
adjustment
period
N/A Species the shortest interval for a
single export limitation adjustment.
Maximum
protection time
N/A ● Species the time for detecting
power meter data. If the Smart
Dongle does not detect any power
meter data within the preset time,
the Smart Dongle delivers the
preset value of the Fail-safe
power threshold to the inverter
for protection.
● The recommended value is 5s or
greater.
Power control
hysteresis
N/A Species the dead zone for adjusting
the inverter output power. If the
power uctuates within the power
control hysteresis, the power is not
adjusted.
FusionSolar Smart PV Management System
Connection
User Manual (Inverters + SDongleA) 5 Site Deployment and Commissioning
Issue 02 (2021-11-25) Copyright © Huawei Technologies Co., Ltd. 38