Huawei SmartLogger3000 User Manual page 97

SmartLogger3000
User Manual
Feature Parameters
Parameter
MPPT multi-peak scanning
MPPT scanning interval (min)
RCD enhancing
Reactive power output at night
PID protection at night
Strong adaptability
Power quality optimization
mode
PV module type
Issue 03 (2020-01-10)
N is 1, 2, 3, 4, 5, or 6.
Description
When the inverter is used in scenarios where PV strings are greatly shaded,
set this parameter to Enable, and then the inverter will perform MPPT
scanning at regular intervals to locate the maximum power.
Specifies the MPPT scanning interval.
RCD refers to the residual current of the inverter to the ground. To ensure
device and personal safety, RCD should be limited to the specified value in
the standard. If an AC switch with a residual current detection function is
installed outside the inverter, this function should be enabled to reduce the
residual current generated when the inverter is running, thereby preventing
the AC switch from misoperations.
In some specific application scenarios, a power grid company requires that
the inverter can perform reactive power compensation at night to ensure
that the power factor of the local power grid meets requirements.
This parameter is displayed when Isolation is set to Input ungrounded,
with TF.
When the inverter outputs reactive power at night and this parameter is set
to Enable, the inverter will shut down automatically if it detects abnormal
status of the PID compensation.
If the power grid short-circuit capacity or PV plant installed capacity is less
than 3, the power grid quality will be affected if the power grid impedance
is too high, which may cause the inverter to malfunction. In this case, if the
inverter is required to work properly, set this parameter to Enable.
If this parameter is set to Enable, the inverter output current harmonics will
be optimized.
This parameter is used to set different types of PV modules and the
shutdown time of the concentration PV module. If the concentration PV
modules are shaded, the power drops drastically to 0 and the inverter shuts
down. The energy yield would be affected since it takes too long for the
power to resume and inverter to restart. The parameter does not need to be
set for crystalline silicon and filmy PV modules.

If this parameter is set to Crystalline silicon or Film, the inverter
automatically detects the power of PV modules when they are shaded
and shuts down if the power is too low.
 When concentration PV modules are used:
− If this parameter is set to CPV 1, the inverter can quickly restart in
60 minutes if the input power of PV modules drops drastically due to
shading.
− If this parameter is set to CPV 2, the inverter can quickly restart in
10 minutes if the input power of PV modules drops drastically due to
shading.
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