Abstract:
The access of massive distributed generators,microgrids,energy storage devices,and other flexible resources to the distribution network makes a resilient distribution network possible.However,the potential of these resources in cooperatively resisting external shocks and restoring the normal operation of the power grid needs to be further explored.The deep spatialtemporal coupling of massive resources makes its structure and control more and more complex in the distribution network.Fluctuations on any side of the source-grid-load can trigger chain failures and affect the safe operation of the distribution network.For this purpose,this paper proposes a resilience research framework for the distribution network with massive resources considering uncertainty disturbances.The framework incorporates resilience to external hazards and suppression of internal fluctuations into the research scope.Firstly,this paper expands the connotation of distribution network resilience,summarizes the existing flexible resources of distribution networks,proposes the structure of a highly resilient distribution network with massive resources,and analyzes its characteristics.Secondly,structural resilience indexes and system resilience indexes are proposed from static topology and dynamic response perspectives respectively to realize quantitative analysis.Then,the uncertainty disturbance is divided into external shocks and internal fluctuations.And the research framework of distribution network resilience is proposed.Its data foundation,theoretical support and resilience enhancement technology,and application scenarios are sorted out and discussed in detail.Finally,an outlook on the highly resilient distribution network with massive resources is presented.