全球能源互联网2025，Vol.8Issue(1)：98-109,12.DOI:10.19705/j.cnki.issn2096-5125.2025.01.011
孤岛模式下基于VSG的光储发电系统多机并联运行策略
Multi-machine Parallel Operation Strategy of Photovoltaic Energy Storage Power Generation System Based on VSG in Islanding Mode
摘要
Abstract
With the large increase of installed capacity of photovoltaic power generation,the power system presents the characteristics of"low inertia and low damping",and the proposed virtual synchronous generator(VSG)technology can enhance system stability and power supply reliability.A collaborative adaptive control strategy is proposed to address the uneven system circulation and power distribution issues caused by impedance differences and load switching in the photovoltaic energy storage-VSG parallel system in isolated island mode.Firstly,the virtual impedance value is dynamically adjusted by the system reactive power deviation to achieve accurate allocation of reactive power and thus suppress the steady-state circulation of the system.Secondly,in order to enhance the system dynamic characteristics and suppress the oscillation of the system during load switching,a two-input and three-output radial basis function(RBF)neural network was established to optimize the key parameters of the system.Finally,three optical storages-VSG parallel models were established,and different capacity ratios were set for simulation analysis to verify that the proposed control strategy can better suppress the system circulation and ensure the stable operation of the system.关键词
光储发电系统/虚拟同步发电机/动态虚拟阻抗/RBF神经网络/环流抑制Key words
photovoltaic energy storage power generation system/virtual synchronous generators(VSG)/dynamic virtual impedance/radial basis function(RBF)neural network/circulation suppression分类
动力与电气工程引用本文复制引用
张萍,李扬..孤岛模式下基于VSG的光储发电系统多机并联运行策略[J].全球能源互联网,2025,8(1):98-109,12.基金项目
国家自然科学基金(西部地区高比例风电场景下的电力系统暂态电压稳定性分析及概率评估,51867085).National Natural Science Foundation of China(51867085). （西部地区高比例风电场景下的电力系统暂态电压稳定性分析及概率评估,51867085）
