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交直流混合微网孤岛检测下的平滑切换研究

作者:时间:2025-08-06点击数:



全文下载: 202504019.pdf


文章编号: 1672-6987(2025)04-0136-08DOI: 10.16351/j.1672-6987.2025.04.019

程东海1 王栋1* 刘喜梅1 孙晓鹏2 郜登科2 李鸿彪21.青岛科技大学 自动化与电子工程学院, 山东 青岛 266061;2.上海科梁信息科技股份有限公司, 上海 200233)

摘要: 基于交直流混合微网风光储一体化模型,针对非计划离网的情况,提出一种在并网运行模式与孤岛运行模式下,两者平滑切换的控制策略。首先,在并网运行模式的情况下,互联变换器采用PQ控制策略;在离网运行模式的情况下,采用V/f控制策略;随着运行状态的改变,同时改变控制策略,以达到各自运行模式的最优控制效果。同时,在由孤岛模式切换到并网模式时使用预同步控制,由并网模式切换到孤岛模式时使用积分初值法控制。本研究主要针对特殊状况下,非计划离网的突变性和不确定性等因素,研究并给出控制方式和理论分析,最后通过仿真对本研究所提出的方法进行实验,验证了方法的可行性和有效性,并通过QuiKIS软件分析了孤岛模式和并网模式的系统稳定性。


关键词: 交直流微网; 平滑切换; 孤岛检测; 预同步控制


中图分类号: TM 77        文献标志码: A


引用格式: 程东海, 王栋, 刘喜梅, . 交直流混合微网孤岛检测下的平滑切换研究[J]. 青岛科技大学学报(自然科学版), 2025, 46(4): -.


CHENG Donghai, WANG dong, LIU Ximei, et al.Research on smooth switching under hybrid micro-network islanding detection[J].Journal of Qingdao University of Science and Technology(Natural Science Edition), 2025, 46(4): -.

Research on Smooth Switching Under Hybrid Micro-Network Islanding Detection

CHENG Donghai1 WANG Dong1 LIU Ximei1 SUN Xiaopeng2 GAO Dengke2 LI Hongbiao2

1.College of Automation and Electronic Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;2.Shanghai Keliang Information Technology Co., Ltd., Shanghai 200233, China)

Abstract: Based on the AC-DC hybrid microgrid wind-storage integration model, the article proposes a control strategy for smooth switching between grid-connected operation mode and islanding operation mode for the unplanned off-grid situation. First, in the case of grid-connected operation mode, the interconnection converter adopts the PQ control strategy; in the case of off-grid operation mode, the V/f control strategy is adopted; with the change of operation state, the control strategy is changed simultaneously to achieve the optimal control effect of the respective operation modes. Meanwhile, the pre-synchronous control is used when switching from islanding mode to grid-connected mode, and the integral initial value method control is used when switching from grid-connected mode to islanding mode. In this paper, the control method and theoretical analysis are studied and given for the special condition, such as the sudden change and uncertainty of unplanned off-grid, and finally, the method proposed in this paper is experimented through simulation to verify its feasibility and effectiveness, and the system stability of islanding mode and grid-connected mode is analyzed by QuiKIS software.


Key words: AC-DC microgrid; seamless switching; pre-synchronous control; islanding detection

收稿日期: 2024-08-08

基金项目: 国家自然科学基金项目(52407113); 山东省自然科学基金项目(ZR2024ME075); 山东省高等学校青创科技支持计划项目(2024KJH134).

作者简介: 程东海(1994—), 男, 硕士研究生.     * 通信联系人.


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