电器与能效管理技术 ›› 2025, Vol. 0 ›› Issue (8): 1-8.doi: 10.16628/j.cnki.2095-8188.2025.08.001

• 研究与分析 •    下一篇

低压多台区柔性互联系统不对称故障穿越控制策略研究

李嘉炜, 缪希仁   

  1. 福州大学 电气工程与自动化学院, 福建 福州 350116
  • 收稿日期:2025-04-25 出版日期:2025-08-30 发布日期:2025-09-26
  • 作者简介:李嘉炜(1999—),男,硕士研究生,研究方向为柔性互联系统控制技术。|缪希仁(1965—),男,教授,博士生导师,研究方向为电器及其系统智能化、电气设备在线监测与诊断、新型电器技术。
  • 基金资助:
    高校产学合作项目(2023H6006)

Research on Asymmetric Fault Ride-Through Control Strategy of Low Voltage Distribution Areas Flexible Interconnection System

LI Jiawei, MIAO Xiren   

  1. College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350116, China
  • Received:2025-04-25 Online:2025-08-30 Published:2025-09-26

摘要:

低压多台区柔性互联系统应具备交流故障穿越能力,以保障系统在交流端口短路故障下可靠运行。为此,提出一种基于低压多台区柔性互联系统的不对称故障穿越策略。首先,介绍低压多台区柔性互联系统的拓扑结构及其控制策略;其次,分析网侧电压不平衡对于柔性系统的影响,并介绍一种序分离控制方法;然后,在此基础上提出一种计及端口电流控制与系统有功功率平衡的故障穿越控制策略;最后,通过仿真验证了所提策略的有效性。

关键词: 柔性互联, 低压台区, 不对称故障, 故障穿越, 控制策略

Abstract:

The low voltage distribution areas flexible interconnection system should be equipped with AC fault ride-through capability to ensure the reliable operation of the system under the short-circuit fault of the AC port.Therefore, an asymmetric fault ride-through strategy based on low voltage distribution areas flexible interconnection system is proposed.Firstly, the topological structure and control strategy of low voltage distribution areas flexible interconnection system are introduced.Secondly, the influence of grid-side voltage imbalance on the flexible system is analyzed, and a sequence separation control method is presented.Then, a fault ride-through control strategy considering port current control and system active power balance is proposed.Finally, the effectiveness of the proposed strategy is verified by simulation.

Key words: flexible interconnection, low voltage disteribution area, asymmetric fault, fault ride-through, control strategy

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