Sungrow Logger3000 User Manual page 68

10 Grid Dispatching
table 10-4 Parameter description
P P a a r r a a m m e e t t e e r r
Communication
abnormality output (%)
Control method
Select energy meter*
Control cycle
Q-Method
Note: *Only when the control method is set to "Closed-loop control", the parameter "-
Select energy meter" is settable.
step 4 Add digital input manner.
Select the desired DI channel, fill in the "Percentage"(fixed value of active power), and
click "Save".
- - - - E E n n d d
S S u u b b s s e e q q u u e e n n t t O O p p e e r r a a t t i i o o n n
Delete digital input manner: select a digital input manner that needs to be deleted, and
click "Clear data".
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D D e e s s c c r r i i p p t t i i o o n n
Communication is abnormal, and specified dispatch
output value is delivered.
Open loop control: Active instruction controlled by DI 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, active
•
instruction controlled by DI 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, active
•
instruction controlled by DI 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 involved in power regulation
Time interval of delivering dispatching instructions
Parameter range: 5~60s
kW: set active power value.
%: set active power percentage.
User Manual