考虑新能源发电与储能装置接入的智能电网转供能力分析

可再生能源发电和新型储能系统接入电网后使得N 1重构路径的选择更为复杂,为解决此背景下智能电网转供能力的计算问题,在对二者时变运行特性分析的基础上,提出基于智能电网转供能力指标体系的N 1恢复模型,通过对转供能力指标计算公式线性化处理,并结合基于拓扑模型简化的人工智能(artificial intelligence,AI)优化算法,利用优化调整电网、可再生能源发电、新型储能系统的运行方式,实现电网N 1后转供能力最大。最后,以某实际典型电网为例,分析可再生能源发电和新型储能系统接入电网对提升系统应对N 1故障能力和实现负荷有效转移的作用,验证了转供能力指标对于定量描述智能电网自愈特性的有效性。

Smart Grid Power Transfer Capability Analysis Considering Integrated Renewable Energy Resources and Energy Storage Systems

The integration of renewable energy resources and storage systems makes power delivery route reconstruction after the N 1 fault taking place more complicated.To solve the calculation problem of smart grid power transfer capability,the time-varying characteristics of renewable energy resources and storage systems were analyzed.Based on this,an N 1 recovery model was proposed on the base of the transfer capability index.Through making the calculation formula of the transfer capability index linear and adopting the artificial intelligence(AI) optimal algorithm based on topology simplification,the operation modes of the power grid,new energy generations and new energy storage systems can be optimized and the maximum power transfer capability of the grid can be achieved.Finally,taking an actual typical network as an example,the significant role of interconnection of renewable energy resources and energy storage devices for the improvement of N 1 recovery ability and the transfer of loads was analyzed.The power transfer capability index in quantitatively describing the self-healing feature was proved to be effective.