68
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Step
The minimum difference value between two consecutive
power dispatching instructions
Hysteresis range**
When the parameter "Q-Method" is set to PF, dispatching
output maintains to be PF±1
Note: *Only when the control method is set to "Closed-loop control", the parameter "-
Select energy meter" is settable.
** Only when the control method is set to "Open loop control" and the Q-Method to "PF"
or when the control method is set to "Closed-loop control", a Smart Energy Meter is
selected, and the Q-Method is set to "PF", the parameter "Hysteresis range" is settable.
step 4 (Optional) After selecting AI configuration, set parameters of the AI port, such as voltage
sampling and current sampling.
step 5 After finishing parameter setting, click "Save" to save the operation.
-- -- EEnndd
10.2.2.5 Digital Input
When using the digital signal at the DI port of the Logger3000 as the dispatching input,
set the reactive control mode to "Digital input".
step 1 Click "Power control" -> "Reactive power" to enter the reactive power interface.
step 2 Set the reactive control mode to "Digital input".
step 3 Set DI control parameters. For specific parameter description, refer to the following
table.
PPaarraammeetteerr
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Communication
abnormality output (%)
Communication is abnormal, and specified dispatch
output value is delivered.
Control method
Open loop control: Reactive instruction controlled by DI is
sent to power output port of the inverter, thereby
achieving active power control.
Closed-loop control: Reactive instruction controlled by DI
is used as target value and reactive power and power
factor of the meter need to be collected and used as
input 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* Select Smart Energy Meter involved in power regulation
10 Grid Dispatching User Manual
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