Field implementation of reactive power management in the congestion management process redispatch 2.0 - methods and findings

The short-term procurement of reactive power is becoming increasingly important, calling for more intensive coordination between grid operators due to local optimization challenges. The German congestion management instrument Redispatch 2.0 provides a platform for such coordination processes. This paper presents an approach and first field test results for extending Redispatch 2.0 by reactive power to provide it from the distribution grid at the point of common coupling to use it for voltage stability in the transmission grid. The results show the potential of expansion and at the same time the challenges that arise in terms of reliable reactive power provision.