Remote Power Control - Sungrow Logger4000 User Manual

8 Grid Dispatching Function

8.2.2.2 Remote Power Control

When the command is issued through IEC104 or MODBUS TCP protocol, set Reactive
Control Mode to Remote Power Control.
step 1 Click Power Control > Reactive Power to enter the Reactive Power page.
step 2 Set Reactive Control Mode to Remote Power Control.
step 3 Set remote dispatching parameters.
table 8-7 Parameters description
Parameters
Control Method
Query Recovery
Time
Frame Delay
Target Value Filter
Filter Time
Select Energy Meter
or Transformer*
Error Limit*
Adjustment Ratio*
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Description
• Open-Loop Control: At the start time, the reactive power
command is sent to the power output port of the inverter for
reactive power control.
• Closed-Loop Control: At the start time, the reactive power
command is set as the target value, and the reactive power and
power factor are collected by the meter as input parameters.
A closed-loop control algorithm is then used to calculate the
proportional value of reactive power compensation, which is
then sent to the power output port of the inverter. This method
is generally used to improve the power factor of the property
boundary point.
The Data Logger receives the remote scheduling command and will
stop querying data during this time period.
Range: 0~60s
Time interval for data interaction with the inverter while executing
the power control function.
Range: 4~70ms
It can be set to "Identical Values", "Change Rate≤0.5%Pn", or "Do
Not Filter".
Set according to actual conditions.
Select a Smart Energy Meter or transformer for power regulation
Adjust accuracy. If the ratio of the difference between the reactive
power and the target value to the rated power is within the set error
range, the target value is reached.
If the adjustment does not reach the set target value, increase or
decrease adjustment value according to the set adjustment ratio, so
as to reach the target value.
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