Three-Stage Robust Unit Commitment Considering Decreasing Uncertainty in Wind Power Forecasting
Three-Stage Robust Unit Commitment Considering Decreasing Uncertainty in Wind Power Forecasting
复制标题
DOI：
10.1109/tii.2021.3079364
复制
发表时间：
2022-02-01
影响因子：
12.3
通讯作者：
Imura, Jun-Ichi
中科院分区：
文献类型：
--
作者：
Cho, Youngchae;Ishizaki, Takayuki;Imura, Jun-Ichi
为保证风电接入后电力供需平衡，现有的非预期鲁棒机组组合模型（NRUCs）对机组组合状态和电源调度策略进行联合优化。利用风电不确定性随时间推移而降低的事实，本文提出了一种NRUC，其中确定调度策略被延迟，直到不确定性降低。建议的NRUC功能三个决策问题顺序解决不同程度的不确定性。第一个决策问题被制定为一个棘手的三阶段鲁棒优化问题。为了解决这个问题，一个次优的方法是开发的约束施加在调度策略，使传输容量的约束得到满足，无论调度水平。24节点和300节点测试系统的仿真结果表明，建议的NRUC优于现有的NRUC的可行性和最优性，目前严重，但减少风力发电的不确定性。
To ensure powersupply-demand balance under the increasing penetration of wind power, the existing nonanticipative robust unit commitment models (NRUCs) co-optimize the commitment status and the dispatch policy of power sources. Exploiting the fact that the wind power uncertainty reduces over time, this article proposes an NRUC where determining the dispatch policy is delayed until the uncertainty decreases. The proposed NRUC features three decision-making problems sequentially solved under different degrees of uncertainty. The first decision-making problem is formulated as an intractable three-stage robust optimization problem. To solve this problem, a suboptimal approach is developed where a constraint is imposed on the dispatch policy so that the transmission capacity constraint is met regardless of the dispatch level. Results of simulations on a 24-bus and a 300-bus test system show that the proposed NRUC outperforms existing NRUCs regarding feasibility and optimality under currently severe but decreasing wind power uncertainty.