“20th PSCC 2018 papers submission and review platform

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Modelling of Active Distribution Networks and its Impact on the Performance of Emergency Controls

The performance of emergency control actions to counteract voltage instability can be highly dependent on the dynamics and behaviour of the distribution network, in particular with an increasing share of controllable converter-connected distributed energy resources. Therefore, it is necessary to investigate the interplay between the modelling of active distribution networks as well as the suitability of applying emergency controls against voltage instability. One the one hand, it is studied if countermeasures acting on load tap changers of distribution transformers are still beneficial in case of distributed generators autonomously controlling distribution voltages. On the other hand, it is analysed how the flexibility of the distribution network can be used for network support in case voltage stability is endangered. For this, the well-known IEEE Nordic Test System is extended by detailed models of active distribution networks that are characterized by changing voltage sensitivity and flexibility as well as different reactive power control strategies.

Author(s):

Lena Robitzky    
TU Dortmund University
Germany

Ulf Haeger    
TU Dortmund University
Germany

Christian Rehtanz    
TU Dortmund University
Germany

 

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