Abstract
Mixed AC-HVDC systems enable new perspectives in the fields of operation, control and security of AC transmission systems. Although a promising vision, meshed HVDC grids do not exist in a real setting. Research on HVDC grid operation is therefore in need of valid test systems for static and dynamic aspects. Besides the CIGRE test system, which focuses on offshore factors and which is consequently not an overlay HVDC grid, a publically available test system does not currently exist. Recent publications in this field adapt established standard AC test systems to their case-related requirements of an HVDC extension. This work introduces and provides a mixed AC-HVDC test system enabling the evaluation of optimal power flow and security constrained OPF algorithms. State-of-the-art literature for HVDC-OPF applications is assessed, applied AC standard test systems are evaluated and key indices are derived from the findings. With respect to this, the proposed test system’s validity and the AC grid’s reference to reality is ensured. The proposed system, comprising 67 AC nodes, 102 AC branches, 9 VSCs and 11 HVDC branches, contains 13 critical contingencies which can be removed by either preventive or corrective measures. The data describing the proposed system is provided.
Published Version
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