Sungrow Logger1000B User Manual page 74

8 Grid Dispatching Function
- - End
8.3.1.2 Remote power control
When the instruction source is IEC104 or MODBUS TCP protocol, set the active control
mode to Remote power control.
step 1 Click Power control→Active power to enter the active power interface.
step 2 Set the active control mode to Remote power control.
step 3 Set remote dispatching parameters. For specific parameter description, refer to the following
table.
table 8-3 Parameter description
Parameter
Communication
abnormality output (%)
Control method
Select energy meter /
transformer*
Error limit (%)*
64
Description
Communication is abnormal, and specified dispatch output
value is delivered.
Open-loop control: Remote monitoring background is
connected 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
monitoring background is connected, active instruction
of remote dispatching 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.
Unselected
Select Smart Energy Meter / transformer involved in power
regulation
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.
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