电力系统保护与控制2024，Vol.52Issue(16)：49-61,13.DOI:10.19783/j.cnki.pspc.231481
考虑配电网灵活性不足风险的分布鲁棒低碳优化调度
Distributionally robust low-carbon optimal scheduling considering flexibility deficiency risk in a distribution network
摘要
Abstract
When there is a high proportion of renewable energy accessing the distribution network under a double carbon target,its uncertainty leads to a great increase of the distribution network flexibility demand.To improve the distribution network flexible operation capability and reduce carbon emissions,a distributionally robust low-carbon optimal scheduling method considering flexibility deficiency risk in a distribution network is proposed.First,this paper considers the soft open point integrated with an energy storage system as network flexibility resources to reduce line blocking and improve the node flexibility resource network mutual benefit level.A power transfer distribution factor is introduced to characterize the flexible supply and demand transmission on the line,and resource flexibility margin and line capacity margin indices are put forward to evaluate distribution network flexibility.Secondly,based on the theory of conditional value-at-risk,the flexibility deficiency risk in the network is derived when the resource-line margin is insufficient.Then,considering the uncertainty and correlation of wind-solar power,the Frank-Copula function is used to generate wind-solar output scenarios,and the improved KL divergence is used to construct the fuzzy set of a probability distribution.To gain the lowest comprehensive operational cost,the distributionally robust optimal scheduling model is established,and a column constraint generation algorithm is used for analysis.Finally,the example shows that soft open point integrated with an energy storage system can reduce line blocking,and the proposed method can reduce system carbon emissions and the risk of flexibility deficiency.关键词
智能储能软开关/灵活性资源/条件风险价值/Frank-Copula函数/分布鲁棒优化Key words
soft open point integrated with energy storage system/flexible resource/conditional value at risk/Frank-Copula function/distributionally robust optimization引用本文复制引用
高万胜,蔺红..考虑配电网灵活性不足风险的分布鲁棒低碳优化调度[J].电力系统保护与控制,2024,52(16):49-61,13.基金项目
This work is supported by the National Natural Science Foundation of China(No.52367012). 国家自然科学基金项目资助(52367012) （No.52367012）
新疆维吾尔自治区重点研发专项资助(2022B01020-3) （2022B01020-3）
