Sungrow 1000A - Page 68

9 Grid Dispatching Function User Manual
62
AI control
When using the analog signal at the AI port of the Logger1000 as the dispatching
input, set the reactive control mode to "Analog input".
Step 1 Click "Power control" -> "Reactive power" to enter the reactive power
interface.
Step 2 Set the reactive control mode to "Analog input".
Step 3 Set AI control parameters. For specific parameter description, refer to the
following Tab. 9-9.
Tab. 9-9 Parameter description
Parameter
Description
Communication
abnormality output (%)
Communication is abnormal, and specified dispatch
output value is delivered.
Control method
Open loop control: Reactive instruction controlled by AI is
sent to power output port of th
e inverter, thereby
achieving active power control.
Closed-loop control: Reactive instruction controlled by AI
is used as target value and reactive power and power
factor of the meter need to be collected and used as input
parameters, and reactive power compensation ratio is
calculated and sent to power output port of the inverter.
Generally, this strategy is used for improving the power
factor of the property boundary point.
Select energy meter*
Select energy meter involved in power regulation
Control cycle
Time interval of delivering dispatching instructions
Parameter range: 5~60s
AI port
AI1~AI4 available
Q-Method
PF: set the power factor as the target value
%: set reactive power percentage
Min. / Max.
When "Q-Method" is set to "%", the parameter ranges from
-100.0% to 100.0%.
When "Q-Method" is set to "PF", the parameter ranges
from -1 to -0.8 or 0.8 to 1.
Step
The minimum difference value between two consecutive
power dispatching instructions
Hysteresis range**
When the parameter "Q-Method" is set to PF, dispatching
output maintains to be PF±1
Note: *Only when the control method is set to "Closed-loop control", the parameter
"Select energy meter" is settable.
** Only when the control method is set to "Open loop control" and the Q-Method to
"PF" or when the control method is set to "Closed-loop control", an energy meter is
selected, and the Q-Method is set to "PF", the parameter "Hysteresis range" is
settable.