blueLog XC - How to setup Export limitation (Zero-Feed-In)


This manual describes how to setup an export limitation, or a Zero-Feed-In in the blue'Log XC.

Terminology


Consumption

Total energy consumption

Self-Consumption

Consumption energy which is not delivered by the grid

Export

Energy delivered to the grid

Import

Energy purchased from the grid

Production

The energy produced by a local generator

Dead time

Time what it takes to get data from a meter including the time which is needed by the inverters to realize the power control commands


Essential preconditions

Control dynamics

  • The dead time of the whole system depends on every single component.
  • Please ask the manufacturer to get the dead time of a certain device. (unit certificate)
  • The bluelog has a dead time of 500ms, data from the meter will be polled every 250ms

Settings

Meter-Setup
  • Please make sure that the sign of the imported power (from the grid) is negative. The sign can be changed using the "Reference arrow system" in the meter-setup.

  • Please define the device role as "Feed in and import"
Basic power-control
  • Set the basic operating data
  • Choose the used feed-in-meter
Active power-limitation
  • Enable controller using "closed loop"
  • Choose the setpoint command method "Pvarfix" and define power setpoint (e.g. 0% for zero feed-in)

  • Enable "Dynamic anti-windup" this could be found in  "Extended controller parameterization / active power control" -> " System behaviour"
Check the correct power controller operation