保证重要负荷不间断供电的配电网储能规划方法

以台风灾害为例提出了保证重要负荷不间断供电的配电网储能规划方法。首先,基于配电网韧性量化,给出了配电网应急响应期间内的年综合失负荷成本模型;其次,为描述灾害的时空特性以及灾害攻击造成的线路故障不确定性,构建了多阶段多区域配电线路故障状态不确定集;最后,考虑规划决策集、多阶段多区域配电线路故障状态不确定集和系统运行集,建立了以线路加固年投资成本、储能配置年投资成本和年综合失负荷成本最小为优化目标的两阶段鲁棒优化模型,并采用column-and-constraint generation (C&CG)算法求解。以IEEE33节点配电网算例和广东某地区实际电网算例仿真分析,结果表明所提规划方法具有较好的韧性提升效果和经济效益,能够有效保证灾害期间重要负荷不间断供电。

Distribution Network Energy Storage Planning Ensuring Uninterrupted Power Supply for Critical Loads

Taking the typhoon disaster as an example, this paper proposes a distribution network(DN) energy storage planning ensuring uninterrupted power supply for critical loads. Firstly, the annual comprehensive load shedding cost model during the emergency response is given based on the DN resilience quantification. Secondly, to describe the spatial-temporal characteristics of disasters and the uncertainties of line faults caused by disaster attacks, the multi-stage multi-zone distribution line fault state uncertainty set is created. Finally, considering the planning decision set, the multi-stage multi-zone distribution line fault state uncertainty set and the system operation set, a two-stage robust optimization model is established with the line hardening annual investment cost, the ESS deployment annual investment cost and the annual comprehensive load shedding cost as the optimization objectives. The column and constraint generation(C&CG) algorithm is used to solve the model. The simulation results of the modified IEEE 33-node DN and the modified power grid representing Guangdong province show that the proposed planning has good resilience effect and economic benefits, and can effectively ensure uninterrupted power supply for critical loads during disasters.