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Step 3 Set remote dispatching parameters. For specific parameter description, refer to the following
table.
table 8-3 Parameter description
Parameter
Description
Control Method
Open-loop control: Remote monitoring background is con-
nected and active instruction of remote dispatching is sent
to the power output port of the inverter, thereby achieving
active power control.
Closed-loop control:
• In case no Smart Energy Meter is selected, remote
monitoring background is connected, active instruction
of remote dispatching 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, remote moni-
toring background is connected, active instruction of re-
mote dispatching 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
avoiding zero power feed-in.
Query recovery time
Data interaction with the inverter will be suspended after
the power control instruction is sent. During this time period,
the device executes the power control function only; after
the end of this time period, data interaction with the inverter
will be resumed.
Range: 0 to 60s
Frame Delay
Time interval for data interaction with the inverter while exe-
cuting the power control function.
Range: 4 to 70ms
Select energy meter/
transformer*
Unselected
Select Smart Energy Meter / transformer involved in power
regulation
Error limit (%)*
Adjustment accuracy
If the ratio of the difference between the active power and
the target value to the rated power is within the set error
range, the target value is reached.
User Manual 8 Grid Dispatching Function
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