综合智慧能源 ›› 2026, Vol. 48 ›› Issue (4): 47-59.doi: 10.3969/j.issn.2097-0706.2026.04.006

• 优化配置与负荷调节 • 上一篇    下一篇

新能源基地直流外送系统多时间尺度鲁棒协同优化调度

王启玺1(), 韩自奋2(), 刘克权2(), 董海鹰1,*()   

  1. 1 兰州交通大学 新能源与动力工程学院兰州 730070
    2 国网甘肃省电力公司兰州 730046
  • 收稿日期:2025-10-26 修回日期:2025-12-26 出版日期:2026-04-25
  • 通讯作者: * 董海鹰(1966),男,教授,博士,从事新能源电力系统方面的研究,hydong@mail.lzjtu.cn
  • 作者简介:王启玺(2002),男,硕士生,从事电力系统优化调度方面的研究,12242269@stu.lzjtu.edu.cn
    韩自奋(1976),男,正高级工程师,博士,从事新能源与储能技术等方面的研究,7638403@qq.com
    刘克权(1981),男,高级工程师,硕士,从事电力系统调度运行与优化控制方面的研究,13893110868@163.com
  • 基金资助:
    甘肃省科技重大专项(25ZDGA001)

Multi-time-scale robust coordinated optimal scheduling of DC transmission systems in new energy bases

WANG Qixi1(), HAN Zifen2(), LIU Kequan2(), DONG Haiying1,*()   

  1. 1 School of New Energy and Power EngineeringLanzhou Jiaotong UniversityLanzhou 730070, China
    2 State Grid Gansu Electric Power CompanyLanzhou 730046 , China
  • Received:2025-10-26 Revised:2025-12-26 Published:2026-04-25
  • Supported by:
    Gansu Province Major Science and Technology Special Project(25ZDGA001)

摘要:

针对风电、光伏出力不稳定给直流外送系统带来的调度问题,提出一种融合多时间尺度优化及自适应鲁棒优化的风光火储直协同优化调度方法。以经济效益、环境效益、系统效益及灵活性等综合效益最大化为目标,以功率平衡、储能荷电状态等为约束,建立风光火储直的两阶段协同优化调度模型。在日前计划阶段,建立目标函数及约束条件,采用非支配排序遗传算法Ⅱ求解该多目标问题。在日内滚动优化阶段,通过构建描述风光出力不确定性的偏差集合,采用min-max鲁棒优化及列与约束生成算法进行求解,实现极端情况下外送功率能够满足中长期直流外送计划。仿真表明,所提策略在场景4下综合成本最低,较场景1降低约7%;中长期外送功率波动幅度降低30%以上;日内滚动优化后,外送功率跟踪误差在2%以内,鲁棒优化模型在最坏情景下仍能获得满足硬性约束的全局最优解。策略在新能源基地直流外送系统中可以实现综合效益最大化的目标,确保实时外送功率能够紧密跟踪中长期外送计划,且所述鲁棒优化模型在考虑最坏情景的不确定性场景时,仍能获得满足硬性约束的全局最优解。

关键词: 新能源, 直流外送系统, 多时间尺度, 综合效益最大化, 非支配排序遗传算法Ⅱ, 自适应鲁棒优化, 列与约束生成算法

Abstract:

To address the scheduling issues caused by the instability of wind and photovoltaic outputs in DC transmission systems, a coordinated optimal scheduling method for wind-photovoltaic-thermal-storage DC systems integrating multi-time-scale optimization and adaptive robust optimization was proposed. A two-stage coordinated optimal scheduling model for wind-photovoltaic-thermal-storage DC systems was established with the objective of maximizing comprehensive benefits, including economic, environmental,system and flexibility benefits, subject to constraints such as power balance and energy storage state of charge (SOC). In the day-ahead planning stage, the objective function and constraints were established, and the multi-objective problem was solved using the non-dominated sorting genetic algorithm Ⅱ. In the intraday rolling optimization stage, a deviation set describing the uncertainty of wind and photovoltaic outputs was constructed, and a min-max robust optimization method was employed. The model was solved using the column-and-constraint generation algorithm to ensure that transmission power met medium- and long-term DC transmission plans under extreme conditions. The simulation results demonstrated that the proposed strategy achieved the lowest comprehensive cost under scenario 4, which was approximately 7% lower than that under scenario 1. The fluctuation amplitude of medium- and long-term transmission power reduced by more than 30%. After intraday rolling optimization, the tracking error of the transmission power was controlled within 2%, and the robust optimization model still obtained a globally optimal solution satisfying hard constraints under the worst-case scenario. The proposed scheduling strategy can maximize comprehensive benefits in the DC transmission systems of new energy bases, ensuring that real-time transmission power closely tracks medium and long-term transmission plans. Furthermore, the robust optimization model can still obtain a globally optimal solution satisfying hard constraints even when considering uncertainty scenarios under the worst-case scenario.

Key words: new energy, DC transmission system, multi-time scale, comprehensive benefit maximization, non-dominated sorting genetic algorithm Ⅱ, adaptive robust optimization, column-and-constraint generation algorithm

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