计及光伏渗透率的光伏发电系统并网模型稳定性分析

沈赋; 李施伟; 单节杉; 韩劲苗; 付玉; 翟苏巍

doi:10.19912/j.0254-0096.tynxb.2024-0875

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (9) : 571-583. DOI: 10.19912/j.0254-0096.tynxb.2024-0875

计及光伏渗透率的光伏发电系统并网模型稳定性分析

沈赋¹, 李施伟², 单节杉¹, 韩劲苗², 付玉¹, 翟苏巍³

作者信息 +

STABILITY ANALYSIS OF GRID-CONNECTED PV POWER GENERATION SYSTEM MODEL CONSIDERING PV PENETRATION

Shen Fu¹, Li Shiwei², Shan Jieshan¹, Han Jinmiao², Fu Yu¹, Zhai Suwei³

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文章历史 +

摘要

针对光伏渗透率对光伏发电系统并网稳定性影响的问题,鉴于太阳能发电的波动特性以及电网对调节能力的需求,提出一种计及光伏渗透率的光伏发电系统并网模型稳定性分析方法。首先,基于光伏发电并网动态模型,建立光伏发电系统状态空间数学模型;然后,采用分数阶微分方程对光伏发电系统的状态空间数学模型进行优化,利用阶跃响应的方法验证状态空间模型的有效性;最后,分别基于IEEE 14节点和IEEE 33节点系统搭建光伏发电并网模型,采用李雅普诺夫稳定性判据分析得出系统稳定时的光伏渗透率阈值。

Abstract

In light of the influence of photovoltaic penetration on the grid-integrated stability of PV systems, and bearing in mind the fluctuating characteristics of solar power generation as well as the grid's requirements for regulation, this paper proposes a stability analysis approach for a grid - connected model of PV systems that takes photovoltaic penetration into consideration. Firstly, considering the impact of photovoltaic penetration on grid-connected PV systems, a state-space mathematical model of PV systems is established based on the dynamic model of grid-connected PV systems. Then, the state-space mathematical model of PV systems is optimized using fractional-order differential equations, and the validity of the state-space model is verified by means of step response. Finally, PV grid connection models are constructed based on the IEEE 14-bus and IEEE 33-bus systems, and the PV penetration threshold is determined using the Lyapunov stability criterion and state-space model analysis.

导出引用

沈赋, 李施伟, 单节杉, 韩劲苗, 付玉, 翟苏巍. 计及光伏渗透率的光伏发电系统并网模型稳定性分析[J]. 太阳能学报. 2025, 46(9): 571-583 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0875

Shen Fu, Li Shiwei, Shan Jieshan, Han Jinmiao, Fu Yu, Zhai Suwei. STABILITY ANALYSIS OF GRID-CONNECTED PV POWER GENERATION SYSTEM MODEL CONSIDERING PV PENETRATION[J]. Acta Energiae Solaris Sinica. 2025, 46(9): 571-583 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0875

中图分类号： TM615

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