考虑源-荷不确定性的微能源网区间规划方法  

Interval Planning Method for Micro Energy Grid Considering Source-load Uncertainties

作　　者：李利 韩胜峰 郑焕坤[2] 李征 李会彬 LI Li;HAN Shengfeng;ZHENG Huankun;LI Zheng;LI Huibin(Xingtai Power Supply Company,State Grid Hebei Electric Power Co.,Ltd,Xingtai 054000,China;School of Electrical Engineering,North China Electric Power University,Baoding 071000,China)

机构地区：[1]国网河北省电力有限公司邢台供电公司,邢台054000 [2]华北电力大学电气工程学院,保定071000

出　　处：《电源学报》2024年第2期290-304,共15页Journal of Power Supply

摘　　要：微能源网存在复杂的能量流动,其源-储优化配置成为其建设初期的首要挑战。此外,微能源网包含的不确定性,特别是风能、太阳能和多能负荷功率的随机波动性难以描述和克服。为解决上述问题,文中将可再生能源和负荷需求的不确定性描述为区间,以年折算投资成本最小为目标,耦合线性化交流潮流模型,计及冷/热/电功率平衡约束、节点电压静态安全约束、线路容量约束、热管道传输功率约束,并基于区间线性规划理论将相应的不确定性约束转化为确定性约束,构建了考虑源-荷不确定性的微能源网区间最优规划模型。通过算例分析验证了模型的可行性和优越性,规划方案可以适应不同的不确定场景,能够保证系统的稳定运行。The optimal configuration of source-storage in micro energy grid(MEG)is a primary challenge at the early stage of its construction since there exist complicated energy flows.In addition,the uncertainties(especially the stochastic fluctuations of wind,solar,and multi-energy load power)in MEG are difficult to describe and overcome.To address these problems,the uncertainties of renewable energy and load demand are described as intervals,the minimization of annual converted investment cost is taken as the objective,and a linear AC power flow model is coupled.The constraints of cool/heat/electric power balance,node voltage static security,line capacity and heat pipe transmission power are taken into account,and the indeterministic constraints are transformed into deterministic ones based on the interval linear programming theory,thereby constructing an interval-based optimal planning model of MEG with the consideration of source-load uncertainties.The feasibility and superiority of this model are verified by case studies and analyses,indicating that the planning scheme can adapt to different uncertain scenarios and ensure the system’s stable operation.

关 键 词：微能源网 不确定性 源储优化配置 区间最优规划 

分 类 号：TM72[电气工程—电力系统及自动化]