内蒙古电力技术2025，Vol.43Issue(6)：50-57,8.DOI:10.19929/j.cnki.nmgdljs.2025.0075
基于VSG控制的光储并网稳定性改进方法
Improvement Method for Grid-Connected Stability of Photovoltaic and Energy Storage Based on VSG Control
摘要
Abstract
In order to solve the voltage fluctuation problem caused by PV grid-connection,this paper proposes a combined grid-connection scheme of PV power generation system and energy storage and adopts the virtual synchronous generator(VSG)control technology to provide the necessary damping and inertia for the grid,and enhance the grid's ability to resist disturbances.By comparing the impacts of PV systems with different grid-connected capacities and locations under the four control methods,the significant impacts of grid-connected location and capacity on power quality are revealed,and it points out that the photovoltaic-storage-cooperative VSG control grid-connection method has more advantages in terms of enhancing the voltage of distribution network nodes and reducing the harmonic distortion rate of grid-connected currents.Experiments show that the proposed method achieves 1.29％voltage enhancement and reduces the harmonic distortion rate to 1.11％at the same capacity compared with the traditional grid-connection method.This paper provides theoretical guidance and practical reference for the wide application of photovoltaic power generation and the stable operation of the power grid in the future.关键词
光伏发电/配电网/电能质量/虚拟同步发电机控制/储能系统Key words
photovoltaic power generation/distribution network/power quality/virtual synchronous machine control/energy storage system分类
信息技术与安全科学引用本文复制引用
LI Bin,LYU Chao,SI Si..基于VSG控制的光储并网稳定性改进方法[J].内蒙古电力技术,2025,43(6):50-57,8.基金项目
内蒙古电力(集团)有限责任公司科技项目"新型有源配电网高比例消纳与高可靠性提升技术及装备研究"(2024-4-47) （集团）
