湖南电力 ›› 2025, Vol. 45 ›› Issue (3): 112-121.doi: 10.3969/j.issn.1008-0198.2025.03.016

• 电网运行与控制 • 上一篇    下一篇

基于无锁相环预同步的光储集群并离网控制策略

郑强仁1, 胡丽娟2, 李宝聚3, 牛耕2, 玄京岩1, 吴鸣2   

  1. 1.国网吉林省电力有限公司延边供电公司,吉林 延边 133002;
    2.国网上海能源互联网研究院有限公司,北京 100192;
    3.国网吉林省电力有限公司,吉林 长春 130022
  • 收稿日期:2025-01-13 修回日期:2025-02-21 发布日期:2025-07-02
  • 通信作者: 胡丽娟(1985),女,高级工程师,研究方向为配电网运行控制及微电网技术。
  • 作者简介:郑强仁(1986),男,高级工程师,研究方向为电力系统运行及控制。李宝聚(1986),男,高级工程师,主要从事分布式光伏发电系统与微电网系统的研究与应用工作。牛耕(1990),男,高级工程师,研究方向为新型储能及分布式电源技术。玄京岩(1971),男,高级工程师,主要从事分布式光伏发电系统与微电网系统的研究与应用工作。吴鸣(1981),男,教授级高级工程师,研究方向为微电网技术。
  • 基金资助:
    国网吉林省电力有限公司科技项目(2022JBGS-10)

Grid-Connected and Off-Grid Control Strategy for Optical Storage Clusters Based on Phase-Locked-Loop-Free Pre-Synchronisation

ZHENG Qiangren1, HU Lijuan2, Li Baoju3, NiU Geng2, XUAN Jingyan1, WU Ming2   

  1. 1. Yanbian Power Supply Company of State Grid Jilin Electric Power Company Limited,Yanbian 133002, China;
    2. State Grid Shanghai Energy internet Research institute Co., Ltd., Beijing 100192, China;
    3. State Grid Jilin Electric Power Company Limited, Changchun 130022, China
  • Received:2025-01-13 Revised:2025-02-21 Published:2025-07-02

摘要: 针对虚拟同步发电机(virtual synchronous generator,VSG)型并网逆变器的控制策略展开研究,提出一种无锁相环预同步控制策略,旨在减小逆变器并网对电网影响,同时简化计算过程,维持系统的稳定运行。仿真验证结果表明,该策略能够实现并离网无缝切换,具有计算简单、响应速度快等优势,有效解决了VSG逆变器并网过程中的电流冲击和电压振荡问题。

关键词: 微电网, 预同步技术, 虚拟同步发电机, 无缝切换技术

Abstract: The control strategy of virtual synchronous generator (VSG) type grid-connected inverter is investigated, and a phase-locked-loop-free pre-synchronous control strategy is proposed, which aims to reduce the impact of grid-connected inverter on the grid, simplify the computation process and maintain the stable operation of the system. Through simulation verification, the strategy can achieve seamless switching between grid-connected and off-grid, has the advantages of simple calculation and fast response speed, and effectively solves the current impact and voltage oscillation problems in the process of grid-connected VSG inverters.

Key words: microgrids, pre-synchronisation techniques, virtual synchronous generators(VSG), seamless switching techniques

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