9 Grid Dispatching Function User Manual
58
output value is delivered.
Control method
Open loop control: Active instruction controlled by AI is
sent to the power output port of the inverter, thereby
achieving active power control.
Closed-loop control:
1） In case no energy meter is selected, active
instruction controlled by AI is used as target value,
and active power compensation ratio is calculated
and sent to the power output port of the inverter.
Generally, this strategy is used for fast and accurate
active power regulation.
2） In case an energy meter is selected, active instruction
controlled by AI is used as target value, active power
of the meter needs to be collected and used as input
parameter, and active power compensation ratio is
calculated and sent to the power output port of the
inverter.
Generally, this strategy is used for
anti-backflow or avoiding zero power feed-in.
Select energy meter*
Unselected
Select energy meter involved in power regulation
Control cycle
Time interval of delivering dispatching instructions
Parameter range: 5~60s
Q-Method
kW: set active power value
%: set active power percentage
Max.
When "Q-Method" is set to "%", the upper limit is 100.0%
When "Q-Method" is set to "kW", the upper limit is 999999
Step
The minimum difference value between two consecutive
power dispatching instructions
Note: *Only when the control method is set to "Closed-loop control", the parameter
"Select energy meter" is settable.
Step 4 After finishing parameter setting, click "Save" to save the operation.
Digital input
When using the digital signal at the DI port of the Logger1000 as the dispatching
input, set the active control mode to "Digital input".
Step 1 Click "Power control" -> "Active power" to enter the active power interface.
Step 2 Set the active control mode to "Digital input".
Step 3 Set DI control parameters. For specific parameter description, refer to the
following Tab. 9-6.
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