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The development of information interconnection technology has enabled the sharing of information between different levels of power grids. The co-operation of transmission and distribution networks, abbreviated as coordinated T&D operation, is an effective approach for achieving optimal allocation of generation resources in multi-level power grids, thereby enhancing the utilization of distributed renewable energy. However, the uncertainty surrounding distributed renewable energy presents a major challenge to the coordinated allocation. Traditional operating methods often lead to additional adjustment costs for over-conservatism or empirical errors due to limited historical date. In this paper, a probability-based distributionally robust optimal (DRO) method is introduced to the coordinated T&D operation model to deal with uncertainty. The proposed DRO model aims to strike a balance between conservatism and optimism. And the co-operation problem is addressed by a novel column-and-constraint generation (C&CG) algorithm. Simulation results show that the DRO-based coordinated T&D operation model can efficiently coordinate the generation resources in multi-level power system and achieve better economic benefits.
Yu et al. (Thu,) studied this question.