Dry Contact Scheduling - Huawei SmartLogger2000 User Manual

SmartLogger2000-(10-C, 11-C)
User Manual
When you set Q-U Hysteresis curve (CEI0-16), ensure that the Capacitive settings of A and
B are consistent, the Capacitive settings of C and D are consistent, and the Capacitive
settings of A and B are different from the Capacitive settings of C and D.

8.2.2 Dry Contact Scheduling

Dry contact scheduling applies to a PV plant with the rated power greater than 100 kW, where
active power and reactive power are remotely adjusted in real time, and the power grid
company requires the dry contact mode.
The SmartLogger scans all the dry contact signals sent from the power grid scheduling
devices (the wireless receiver controller or power carrier communications devices), converts
the signals into valid command data identifiable to the SUN2000s, and sends the data to all
the SUN2000s connected to the SmartLogger.
Issue Draft A (2017-02-15)
Figure 8-9 Q-U hysteresis curve (CEI0-16)
 When you set the curve, ensure that the U/Un(%) or Q/Pn(%) value of a point is larger than the
U/Un(%) or Q/Pn(%) value of the previous point. Otherwise, the Invalid input. message is
displayed.
If a "√" is under Capacitive, the power grid supplies capacitive reactive power to the PV plant. If no

"√" is under Capacitive, the PV plant supplies inductive reactive power to the power grid.
 Both the Q-U characteristic curve and cos(Phi)-P/Pn characteristic curve can support a maximum of
10 valid data points.
 Set Reactive power adjustment time to specify the changing intervals of the reactive power for a
grid connection point. The range is 5s to 120s.
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