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An Advanced Control Strategy for DC Interconnections of Distribution Systems Considering Curative System Security

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The increasing amount of renewable energy infeed into distribution systems has become a challenge for power system operation. Connecting several distribution systems via VSC-based DC-interconnections has been identified to be an effective alternative to conventional grid expansion to relieve the power systems. This paper introduces an advanced control strategy for DC-interconnected distribution systems based on curative system security to increase the maximum utilization of existing assets within security limitations. Furthermore, an approach to coordinate the setpoint determination of a DC-interconnection between two DSO’s is introduced in this work.

Author(s):

Johannes Kayser    
Technische Universität Ilmenau
Germany

Steffen Schlegel    
Technische Universität Ilmenau
Germany

Dirk Westermann    
Technische Universität Ilmenau
Germany

 

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