基于直流电压前馈的构网型光伏稳定性优化控制策略  

Optimal Control Strategy of Stability for Grid⁃forming Photovoltaic Based on DC Voltage Feedforward

作　　者：杨葆鑫 邢文奇 刘鹏飞 李阳 付二顺 李彦如 YANG Baoxin;XING Wenqi;LIU Pengfei;LI Yang;FU Ershun;LI Yanru(Henan High Voltage Apparatus Research Institute Co.,Ltd.,Henan Pingdingshan 467001,China)

机构地区：[1]河南省高压电器研究所有限公司,河南平顶山467001

出　　处：《高压电器》2024年第12期213-222,共10页High Voltage Apparatus

摘　　要：构网型光伏表现出电压源特性,对电网具有较强的适应性。文中以基于直流电压同步的构网型光伏为研究对象,建立了构网型光伏的阻抗小信号模型,通过阻抗分析研究了构网型光伏的稳定性。在稳定性分析基础上提出了基于直流电压前馈的构网型光伏稳定性优化控制策略,对比分析了改进的构网型光伏的稳定性。最后通过控制器硬件在环实验验证了文中所提控制策略的有效性和理论分析的正确性。Grid⁃forming PV exhibits voltage source characteristics and is highly adaptable to the grid.In this paper,the impedance small⁃signal model of grid⁃forming photovoltaics based on DC voltage synchronisation is established,and the stability of grid⁃forming photovoltaics is investigated by impedance analysis.On the basis of stability analysis this paper proposes an optimal control strategy for the stability of grid⁃forming PV based on DC voltage feed forward,and comparatively analyses the stability of the improved grid⁃forming PV.Finally,this paper verifies the effective⁃ness of the control strategy proposed in this paper and the correctness of the theoretical analysis through controller hardware⁃in⁃the⁃loop experiments.

关 键 词：构网型光伏 阻抗 稳定性 直流电压前馈 优化 

分 类 号：TM615[电气工程—电力系统及自动化] TM712