SMA SC 500CP-10-JP - Manual (Page 64)

8 Power Control SMA Solar Technology AG
64 SCCP-JP-BA-A4-en-12 User Manual
You can set the procedure for reactive power control in the operating state "Q at Night" via the parameter
QoDQ-VArMod. Use this parameter to configure how the specifications of the grid operator are to be received and
implemented.
There are seven different modes for reactive power control. The default value for this parameter is Off.
Procedure:
1. Ensure that the Sunny Central is in the operating state "Stop".
2. Log into the user interface.
3. Change the parameter QoDQ-VArMod (see Section 6.2, page 40).
4. Change any parameters associated with the selected mode.
5. Use the parameter PwrMonErrMod to select the desired inverter behavior in the absence of setpoint specifications
as follows:
6. If SubVal has been selected, enter the proxy values for normal feed-in operation and for operation outside of normal
feed-in operation, as follows:
Mode Description
Off The reactive power setpoint is limited to 0 kVAr.
VArCtlCom The reactive power setpoint is received via the Power Reducer Box or the Power Plant Controller.
VArCnst The parameter QoDQ-VAr is used to set the reactive power setpoint in kVAr.
VArCnstNom The parameter QoDQ-VArNom is used to set the reactive power setpoint as a percentage
relative to Pmax.
VArCnstNomAnIn The reactive power setpoint is imported via an analog input. The analog value is converted into a
reactive power setpoint.
VArCtlVol The reactive power is set as a function of the line voltage.
VArCtlVolHystDb The provision of reactive power helps perform voltage-stabilizing measures in the event of
overvoltage or undervoltage. The parameterization is carried out by means of a reactive power/
voltage characteristic curve.
VArCtlVolHysDbA The provision of reactive power helps perform voltage-stabilizing measures in the event of
overvoltage or undervoltage. The parameterization is carried out by means of a reactive power/
voltage characteristic curve and an activation power.
Parameter block
The parameter QoDQ-VarMod can only be changed in the operating state "Stop". The entry will not be accepted
in any other operating state.
Setting Description
LastVal If specified via communication: utilization of the last value received. In case of analog
setpoints: utilization of the last valid mean value.
SubVal Utilization of the configured proxy values. SMA recommends use of the proxy values when
setpoint specifications are effected via analog signals.
Parameters Description
Q-VArSubValRun Proxy value for the reactive power setpoint in feed-in operation
PF-PFSubValRun Proxy value for the displacement power factor in feed-in operation
PF-PFExtSubValR Proxy value for the excitation of the displacement power factor in feed-in operation
Q-VArSubVal Proxy value for the reactive power setpoint outside of feed-in operation