A Review Of The Mutual Influence Analysis Of AC/DC Hybrid Power Grid

With the continuously development of the HVDC transmission technology, a great number of large scale HVDC transmission projects have been completed or under construction, along with more issues come to the surface. Faults or disturbances would act on the AC/DC hybrid power grids, especially for the multi-feedback DC power grid. In this paper, the mutual influence between AC and DC grids is studied and analyzed in depth according to the actual cases. It has two aspects which conclude the impact of DC system faults on AC systems and AC system faults on DC systems separately. Theoretical analysis and research are made and specific optimization measures are proposed for how to reduce the interaction between AC and DC transmission projects after faults or disturbance in AC-DC hybrid systems.