When the SmartLogger receives a remote reactive power scheduling command
from the PV plant, it automatically changes Reactive power control mode to
Remote communication scheduling. If power factor closed-loop control is
required, set Reactive power control mode to Power factor closed-loop control
and set the target power factor correctly.
PF-U Characteristic Curve
If the remote reactive power control command is not available, you can congure
the characteristic curve as a substitute. After the SmartLogger delivers the values
congured for the characteristic curve to inverters or Smart PCSs, which then
operates according to the
conguration. The SmartLogger does not adjust the
values.
Congure the characteristic curve under instructions from professionals to ensure
that the inverter or Smart PCS works properly.
In the control mode of the PF-U characteristic curve, the inverter or Smart PCS
dynamically adjusts the PF at the device port based on U/Un(%) (the ratio of the
actual grid voltage to the rated grid voltage).
Parameter
Description
Reactive power control
mode
Set this parameter to PF-U characteristic curve.
Characteristic curve
points
● Species the number of points on the characteristic
curve.
● The characteristic curve supports a maximum of 10
valid points.
U/Un(%) When conguring the curve, ensure that the U/Un(%)
value of a point is greater than that of the previous
point. Otherwise, the "Invalid input" message will be
displayed.
PF
Q-P Characteristic Curve
If the remote reactive power control command is not available, you can congure
the characteristic curve as a substitute. The SmartLogger delivers the values
congured for the characteristic curve to inverters or Smart PCSs, which then
operates according to the conguration. The SmartLogger does not adjust the
values.
SmartLogger3000
User Manual 6 WebUI Operations
Issue 10 (2022-08-20) Copyright © Huawei Technologies Co., Ltd. 218
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