9 Grid Dispatching Function User Manual
60
9.3.2 Reactive Power
Disable
If the grid company does not need the power plant to adjust the voltage at the
grid-connection point, and the inverter does not need to cooperate with the grid for
reactive power compensation, the inverter keeps operating in the
reactive-forbidden output state, and the Reactive control mode is set to "Disable".
Step 1 Click "Power control" -> "Reactive power" to enter the reactive power
interface.
Step 2 Set the reactive control mode to "Disable" and click “Save”.
Remote power control
When the instruction source is IEC104 or MODBUS TCP protocol, set the "Reactive
control mode" to "Remote power control".
Step 1 Click "Power control" -> "Reactive power" to enter the reactive power
interface.
Step 2 Set the "Reactive control mode" to "Remote power control".
Step 3 Set remote dispatching parameters. For specific parameter description, refer
to the following Tab. 9-7.
Tab. 9-7 Parameter description
Communication
abnormality output (%)
Communication is abnormal, and specified dispatch
output value is delivered.
Control method
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: Remote monitoring background is
connected and reactive instruction of remote dispatching
is used as target value, reactive power and power factor of
the meter need to be collected and us
parameters, and reactive power compensation ratio is
calculated and sent to power output port of the inverter.
Generally, this strategy is used for improving the power
factor of the property boundary point.
Select energy meter involved in power regulation
Control cycle
Time interval of delivering dispatching instructions
Parameter range: 5~60s
Note: *Only when the control method is set to "Closed-loop control", the parameter
"Select energy meter" is settable.
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