中国电力 ›› 2025, Vol. 58 ›› Issue (8): 41-49.DOI: 10.11930/j.issn.1004-9649.202501016

• 交直流配电系统灵活资源规划运行及动态控制 • 上一篇    下一篇

考虑源荷调控的配变重过载及三相不平衡的差异化治理策略

杨强1(), 罗颖婷1(), 石墨1(), 江俊飞1, 阮迪航1, 刘升阳2(), 颜勤2(), 马瑞2()   

  1. 1. 广东电网有限责任公司电力科学研究院,广东省电力装备可靠性企业重点实验室,广东 广州 510080
    2. 长沙理工大学 电气与信息工程学院,电网防灾减灾全国重点实验室,湖南 长沙 410114
  • 收稿日期:2025-01-06 发布日期:2025-08-26 出版日期:2025-08-28
  • 作者简介:
    杨强(1986),男,硕士,高级工程师,从事电网大数据研究,E-mail:2951713890@qq.com
    刘升阳(1999),男,通讯作者,硕士研究生,从事电力系统控制研究,E-mail:liushengyang2024@126.com
  • 基金资助:
    国家自然科学基金资助项目(52307080);中国南方电网有限责任公司科技项目(GDKJXM20222663)。

Differentiated Governance Strategies for Distribution Transformer Overload and Three-Phase Imbalance Considering Source-Load Regulation

YANG Qiang1(), LUO Yingting1(), SHI Mo1(), JIANG Junfei1, RUAN Dihang1, LIU Shengyang2(), YAN Qin2(), MA Rui2()   

  1. 1. Guangdong Provincial Key Laboratory of Electric Power Equipment Reliability (Electric Power Research Institute of Guangdong Power Grid Corporation), Guangzhou 510080, China
    2. State Key Laboratory of Disaster Prevention & Reduction for Power Grid (School of Electrical & Information Engineering, Changsha University of Science and Technology), Changsha 410114, China
  • Received:2025-01-06 Online:2025-08-26 Published:2025-08-28
  • Supported by:
    This work is supported by National Natural Science Foundation of China (No.52307080), Science and Technology Project of China Southern Power Grid Co., Ltd. (No.GDKJXM20222663).

摘要:

针对单相分布式光伏和单相充电桩大规模接入以及配电变压器三相不平衡、重过载两者混杂问题,提出一种考虑源荷调控的配变重过载及三相不平衡的差异化治理策略。首先,建立考虑光充随机性的台区三相不平衡及重过载模型,分析光伏出力、充电行为的不确定性对台区三相不平衡和重过载的影响;其次,建立考虑源荷调控潜力的台区评估及聚类模型,挖掘出具有源荷调控潜力的台区作为控制集群;最后,建立了考虑三相不平衡和重过载的台区调控模型,以三相不平衡度、负载率和网损为目标函数,考虑聚合光伏控制、聚合充电功率控制、储能和无功补偿的协同控制,并采用NSGA-Ⅱ算法和最大模糊满意度方法求解。采用IEEE 33节点算例模型进行仿真验证,结果表明所提方法能够有效治理台区的三相不平衡和重过载混杂问题。

关键词: 配电变压器, 重过载, 三相不平衡

Abstract:

Aiming at the mixed problems of three-phase imbalance and heavy overload of distribution transformers caused by large-scale access of single-phase distributed photovoltaic and single-phase charging piles, a differentiated governance strategy for heavy overload and three-phase imbalance of distribution transformers considering source-load regulation is proposed. Firstly, a substation imbalance and heavy overload model considering the randomness of photovoltaic charging is established, and the influence of the uncertainty of photovoltaic output and charging behavior on the three-phase imbalance and heavy overload of the substation is analyzed. Secondly, a substation evaluation and clustering model considering the potential of source-load regulation is established, and the substations with the potential of source-load regulation are mined as control clusters; finally, a substation regulation model considering three-phase imbalance and heavy overload is established, with three-phase imbalance, load rate and network loss as the objective function, considering the coordinated control of aggregated photovoltaic control, aggregated charging power control, energy storage and reactive power compensation, and solving it by NSGA-Ⅱ algorithm and maximum fuzzy satisfaction method. The IEEE33 node example model is used for simulation verification, and the results show that this method can effectively manage the mixed problems of three-phase imbalance and heavy overload in the substation.

Key words: distribution transformer, overload, three-phase Imbalance


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