Optimization of the Operation of an HVDC Transmission System by an Overlaid Master Control

Conference: NEIS 2018 - Conference on Sustainable Energy Supply and Energy Storage Systems
09/20/2018 - 09/21/2018 at Hamburg, Deutschland

Proceedings: NEIS 2018

Pages: 5Language: englishTyp: PDF

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Stoetzel, Thomas; Staudt, Volker (EneSys, Ruhr University Bochum, 44780 Bochum, Germany)

High-voltage DC (HVDC) transmission lines based on self-commutated converters add highly efficient transport capability to transmission grids. With regard to availability and resilience, master-slave-free multiterminal operation without explicit communication is highly advantageous, at least as a fall-back option. It operates on the basis of a DC droop characteristic. As a consequence, all converter stations operate individually in all conceivable situations. A targeted optimization of energy flow with regard to, e.g., overall efficiency of energy transmission is very restricted. This paper discusses the addition of a communication to a central controller “master control” which then implements a model-based optimization. The previously develop droop-based remains active with modified parameters, returning to the original parameters in case of communication failure as fall-back option.