Huawei SmartLogger1000 User Manual page 168

SmartLogger1000
User Manual
Figure 7-82 Q-U Hysteresis curve(CEI0-16)
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.
Remote Communication Scheduling
When Reactive Power Control Mode is set to Remote comm.sched., as shown in
7-83, the SmartLogger receives the scheduling commands from the upstream EMS, converts
them into valid command data identified by the inverters, and then sends the data to all the
connected inverters. Based on the principle of preference of remote communication
scheduling, the SmartLogger automatically set Reactive Power Control Mode to Remote
comm.sched. after receiving a scheduling command from the upstream EMS.
Issue 04 (2013-12-15)
 When you set Q-U Hysteresis curve (CEI0-16), ensure that the U/Un(%) or P/Pn(%) value of a
point is larger than the U/Un(%) or P/Pn(%) value of the previous point. Otherwise, the Invalid
input message is displayed.
If a "√" is under Capacitive, the power factor is a negative value, indicating that the power grid

supplies reactive power to the PV power station. If no "√" is under Capacitive, the power factor is a
positive value, indicating that the PV power station supplies 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
compensation for the grid-feeding point in the PV power station. The range is 0 to 60s.
 When adding data points for the curve, refer to the provided range in the right of the text box.
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