Huawei SDongleA-01 User Manual page 45

FusionSolar Smart PV Management System
Connection
User Manual (Inverters + SDongleA)
Parameter
Communication
disconnection
fail-safe
Communication
disconnection
detection time
Active power
output limit for
fail-safe
Grid Closed-loop
connection controller
with limited
power (%)
Limitation mode
PV plant capacity
Maximum grid
feed-in power
(%)
Issue 02 (2021-11-25)
● Disable
● Enable
N/A
N/A
● SDongle/
SmartLogger
● Inverter
● Total power
● Single-phase power
N/A
N/A
Copyright © Huawei Technologies Co., Ltd.
5 Site Deployment and Commissioning
Description
In the inverter export limitation
scenario, if this parameter is set to
Enable, the inverter will derate
according to the active power
derating percentage when the
communication between the inverter
and the Smart Dongle is
disconnected for a period longer than
Communication disconnection
detection time.
Specifies the time for determining
the communication disconnection
between the inverter and the Smart
Dongle. This parameter is displayed
when Communication
disconnection fail-safe is set to
Enable.
Specifies the derating value of the
inverter active power by percentage.
If the Smart Dongle does not detect
any power meter data or the
communication between the Smart
Dongle and the inverter is
disconnected, the Smart Dongle
delivers the derating value of the
inverter active power by percentage.
● For a single inverter, set Closed-
loop controller to Inverter.
● For multiple inverters, Closed-
loop controller can only be set to
SDongle/SmartLogger.
● 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.
Specifies the total maximum active
power in the inverter cascading
scenario.
Specifies the percentage of the
maximum active power of the grid-
tied point to the PV plant capacity.
39