Stability in Transmission Grids


Photo of Carola Cieslak


Carola Cieslak

Team Leader System Stability in Transmission Grids


+49 241 80 97689


  Exemplary figures assessing stability in transmission grids Copyright: IFHT

Due to the increasing amount of active grid components and therefore changing system dynamics, in some scenarios the stability reserves might be diminished resulting in critical system states regarding the overall system stability.

Team Stability in Transmission Grids develops models and methods in order to identify and assess critical states and fault scenarios within the transmission grid. Original simulation tools are developed (e.g. MatPAT for time domain simulation) in addition to the use of commercial tools. The optimization of established methods and models enables the analysis and evaluation of harmonic, transient, frequency and voltage stability in extensive transmission systems.

Main research topics:

  • Modelling and simulation of active distribution grids with high shares of renewable energy sources for stability studies of transmission grids
  • Development of simulation and analysis tools for system splits in transmission grids and for the investigation of frequency stability in resulting subnetwork topologies
  • Identification of dynamic reactive power reserves and parametrization of local automatic control mechanisms to secure voltage stability
  • Investigation of the impact of active grid components on harmonic stability
  • Comprehensive dimensioning of HVDC systems and development of control strategies to provide ancillary services in meshed AC-grids

Theses of the team STG