Reducing the Attenuation of Ripple Control Signals
Qualified person
By setting certain parameters, the attenuation of three-phase parallel ripple control frequencies ranging from 1000 Hz to 1100 Hz can be avoided. The parameters must only be set in consultation with the responsible grid operator.
The basic procedure for changing operating parameters is explained in another section ( > Changing Operating Parameters).
Requirements:
The firmware version of the inverter must be at least 2.81.07.R.
Procedure:
- Set the following parameters:
SMA Data/RS485 | Definition | Unit | Range | Value to be set |
|---|---|---|---|---|
RplDet-NBS-Gain | Ripple control signal detection, amplification of narrow-band backup | V/A | 0 to -10 | -9 |
RplDet-NBS-Damp | Ripple control signal detection, attenuation of narrow-band backup | p.u. | - | 0.1 |
RplDet-NBS-Hz | Ripple control signal detection, frequency of the narrow-band backup | Hz | 1000 to 1100 | Must be specified by the grid operator |