基于电压变化率的独立直流微网储能变换器虚拟惯性控制策略

张瑞芳; 王国玲; 罗成汉; 曹文胜

doi:10.19912/j.0254-0096.tynxb.2024-0486

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (7) : 298-306. DOI: 10.19912/j.0254-0096.tynxb.2024-0486

第二十七届中国科协年会学术论文

基于电压变化率的独立直流微网储能变换器虚拟惯性控制策略

张瑞芳¹, 王国玲¹, 罗成汉¹, 曹文胜²

作者信息 +

VIRTUAL INERTIA CONTROL STRATEGY FOR ENERGY STORAGE CONVERTERS IN ISLANDED DC MICROGRIDS BASED ON RATE OF CHANGE OF VOLTAGE

Zhang Ruifang¹, Wang Guoling¹, Luo Chenghan¹, Cao Wensheng²

Author information +

文章历史 +

摘要

针对传统虚拟惯性控制方法虚拟惯性补偿环路与控制内环相互作用引发的暂态功率振荡问题,提出一种基于电压变化率的虚拟惯性控制方法,通过改善系统虚拟阻尼特性,进一步优化系统暂态特性。通过建立系统小信号模型,分析关键参数对系统稳定性及暂态特性的影响,获得参数优化设计准则。最后,搭建实验模型对不同控制方法进行对比分析,结果表明所提控制策略可有效改善系统暂态特性,保障母线电压稳定。

Abstract

Virtual inertia control method can effectively improve system inertia and guarantee bus voltage stability . In this paper, for the transient power oscillation caused by the interactions between the virtual inertia compensation loop and the control inner loop of the traditional virtual inertia control method, a virtual inertia control strategy based on the rate of change of voltage （VI-ROCOV） is proposed to further optimize the transient characteristics of the system through the improvement of the virtual damping characteristics of the system. By establishing a small-signal model of the system, the influence of key parameters on the stability and transient characteristics of the system is analyzed, and the parameter optimization design guidelines are obtained. Finally, an experimental model is established to compare and analyze the different control methods. The results show that the proposed control strategy effectively improves the transient performance of the system and ensures the bus voltage stability.

导出引用

张瑞芳, 王国玲, 罗成汉, 曹文胜. 基于电压变化率的独立直流微网储能变换器虚拟惯性控制策略[J]. 太阳能学报. 2025, 46(7): 298-306 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0486

Zhang Ruifang, Wang Guoling, Luo Chenghan, Cao Wensheng. VIRTUAL INERTIA CONTROL STRATEGY FOR ENERGY STORAGE CONVERTERS IN ISLANDED DC MICROGRIDS BASED ON RATE OF CHANGE OF VOLTAGE[J]. Acta Energiae Solaris Sinica. 2025, 46(7): 298-306 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0486

中图分类号： TM721.1

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