• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2020, Vol. 41 ›› Issue (3): 110-118.doi: 10.3969/j.issn.1000-7229.2020.03.014

• 交直流配电网规划设计与调度控制 • 上一篇    下一篇

含光储联合体的交直流配电网双层两阶段鲁棒优化运行策略

廖鸿图1, 黄益宏1,施亦治1,陈健2   

  1. 1. 国网浙江平阳县供电有限责任公司,浙江省温州市 325000;2. 山东大学电气工程学院,济南市 250061
  • 出版日期:2020-03-01
  • 作者简介:廖鸿图(1981),男,工程师,主要从事电力系统运维检修等工作; 黄益宏(1979),男,工程师,主要从事电力系统运维检修等工作; 施亦治(1993),男,助理工程师,主要从事电力通信运维检修等工作; 陈健(1986),男,博士,副教授,主要研究方向为智能配电网与综合能源。
  • 基金资助:
    国家自然科学基金项目(51707108);国网浙江省电力公司科技项目(2019-YJ-PYCT-01)

A Bi-Level Two-Stage Robust Optimal Operation Strategy for AC and DC Distribution Network with Photovoltaic  and Energy Storage

LIAO Hongtu1, HUANG Yihong1, SHI Yizhi1, CHEN Jian2   

  1. 1. State Grid Zhejiang Pingyang Power Supply Company, Wenzhou 325000, Zhejiang Province, China; 2. School of Electrical Engineering, Shandong University, Jinan 250061, China
  • Online:2020-03-01
  • Supported by:
    This work is supported by National Natural Science Foundation of China(No. 51707108) and State Grid Zhejiang Electric Power Co., Ltd. Research Program (No. 52060019001H).

摘要: 为提高可再生能源利用率和供电经济性,推进可再生能源与储能结合,实现可再生能源就地消纳,考虑配电网中源-荷不确定性,提出了一种含光储联合体 (photovoltaic and energy storage, PAES) 的交直流配电网双层两阶段鲁棒优化运行策略。第一层优化以接入PAES节点的购电费用最小为优化目标,并达到最大化消纳可再生能源的目的;第二层优化以交直流配电网运行费用最小为优化目标,总运行费用包括购电费用、网络损耗费用、储能电站的运行维护费用以及寿命损耗费用,并采用二阶锥松弛的方法处理非线性约束。文章所提策略实现了可再生能源的最大化消纳,改善了负荷曲线峰谷差距大的问题;在保证优化策略鲁棒性的基础上,实现了交直流配电网的经济运行。最后,以改造后的IEEE 33节点的交直流配电网为算例进行分析,验证了所提策略的正确性和有效性。

关键词: 光储联合体, 交直流配电网, 鲁棒优化, 二阶锥, 储能电站

Abstract:  In order to improve renewable energy utilization and power supply economy, promote the combination of renewable energy and energy storage projects, and realize the local accommodation of renewable energy, this paper proposes a bi-level two-stage robust optimal operation strategy for AC and DC hybrid distribution network with photovoltaic and energy storage (PAES) considering source-load uncertainty. The first level of the strategy takes the maximum accommodation of renewable energy as the constraints, and the minimum electricity purchase cost required to access PAES nodes as the optimization objective; the second level takes the minimum operation cost of AC and DC hybrid distribution network as the optimization objective, including power purchase cost, network loss cost, operation and maintenance cost and life loss cost of energy storage station. The second-order cone relaxation method is adopted to handle nonlinear constraints. The strategy proposed in this paper realizes the maximum accommodation of renewable energy, solves the problem of large gap between peak and valley of load curve, and achieves the economic operation of AC and DC distribution network on the basis of ensuring the robustness of optimization strategy. Finally, this paper takes an AC and DC distribution network with the modified IEEE 33 nodes as an example to analysis, and verifies the correctness and effectiveness of the proposed strategy.

Key words: photovoltaic and energy storage, AC and DC distribution network, robust optimization, second-order cone, energy storage power station

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