Huawei SmartLogger2000 User Manual page 177

SmartLogger2000-(10-C, 11-C)
User Manual
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Set the parameters of characteristic curves under commands from professionals to ensure that
the SUN2000s work properly.
Issue Draft A (2017-02-15)
Figure 8-6 Power factor fix control
If no separate periods are required, users can set only a start time.
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.
If the remote control of the reactive power is not available, the SmartLogger provides the
Q-U characteristic curve, cos(Phi)-P/Pn characteristic curve, and Q-U Hysteresis
curve(CEI0-16) as a substitute. The power dispatching personnel specifies the
characteristic curve according to the requirements of the local power grid and grid-tied
power system and sends the signal to all the connected SUN2000s in real time.
Set Reactive Power Control Mode to Q-U characteristic curve (as shown in
8-7), cos(Phi)-P/Pn characteristic curve (as shown in
curve(CEI0-16) (as shown in
The Q-U characteristic curve control mode is to dynamically adjust the ratio of the output reactive
power and apparent power Q/S in accordance with the ratio of the actual grid voltage to rated grid
voltage U/Un (%).
The cos(Phi)-P/Pn characteristic curve control mode is to dynamically adjust the power factor
cos(Phi) in accordance with the ratio of the actual SUN2000 output power to rated SUN2000 power
P/Pn (%) based on the VDE-4105\BDEW German standard.
The Q-U Hysteresis curve(CEI0-16) control mode is the Italian standard CEI0-16 version of the Q-U
characteristic curve. It dynamically adjusts the output reactive power of the SUN2000 in accordance
with the ratio of the actual voltage to the rated voltage. The final value should be in the form of
Q/Pn.
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Figure 8-9).
8 Power Grid Scheduling
Figure 8-8), or Q-U hysteresis
Figure
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