Huawei SmartLogger1000 User Manual page 160

SmartLogger1000
User Manual
Figure 7-73 Remote control
Percentage Fix Limitation
The SmartLogger provides simplified local percentage settings for the active power reduction,
which applies to small-scale grid-tied PV power generating systems or power stations with
attendants. The SmartLogger also supports the automatic local power control, that is, to
automatically adjust the active power reduction percentage in different periods of the day.
Users can specify the settings based on the output features of the power station. The
SmartLogger will control the active power output of the inverters according to the user
requirements.
Set Active Power Control Mode to Percentage fix limitation, as shown in
Issue 04 (2013-12-15)
 Users can set the active power reduction gradient to control active power change speed of the
grid-feeding point in the PV power station. The range is 0%/s to 10%/s.
 The active power is reduced by percentage. Four levels are recommended: 100%, 60%, 30%, and
0%.
 A maximum of 16 levels is supported for the active power reduction percentage.
"√" means low level. When the four DI ports in the SmartLogger are connected to the GND2, low

level is indicated; when they are not connected to the GND2, high level is indicated.

The percentage levels of DI1, DI2, DI3, and DI4 should differ from each other. Otherwise, an
abnormal command is generated.

If the SmartLogger supports both active power control and reactive power control, DI1, DI2, DI3, or
DI4 can be selected only once. In this case, four percentage levels are available.
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7 Web User Interface
Figure 7-74.
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