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Step 3 Set AI control parameters. For specific parameter description, refer to the following table.
table 8-5 Parameter description
Parameter
Description
Control Method
Open-loop control: Active instruction controlled by AI is sent
to the power output port of the inverter, thereby achieving ac-
tive power control.
Closed-loop control:
• In case no Smart Energy Meter is selected, active instruc-
tion 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.
• In case a Smart Energy Meter is selected, active instruc-
tion controlled by AI is used as target value, active power
of the meter needs to be collected and used as input pa-
rameter, and active power compensation ratio is calcu-
lated and sent to the power output port of the inverter.
Generally, this strategy is used for anti-backflow or avoid-
ing zero power feed-in.
Select energy meter/
transformer*
Unselected
Select Smart Energy Meter involved in power regulation
Control Cycle
Time interval of delivering dispatching instructions
Parameter range: 5~60s
AI port
AI1~AI4 available
Instruction Type
kW: set active power value
%: set active power percentage
Min. Lower limit: 0.0
Max.
When Instruction Type is set to %, the upper limit is 100.0%
When Instruction Type is set to kW, the upper limit is 999999
kW
Step
The minimum difference value between two consecutive
power dispatching instructions
Sampling Value Less
Than Lower Limit Power
Value (%)
Power limit ratio to be sent when the sampling value from the
AI channel falls below the lower limit.
Sampling Value Less
Than Lower Limit Asso-
ciated DO
If the IOM424 module has been connected and the sampling
value from the AI channel falls below the lower limit, the se-
lected DO port outputs an action signal.
8 Grid Dispatching Function User Manual
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