电力系统自动化2025，Vol.49Issue(9)：125-134,10.DOI:10.7500/AEPS20240511005
高渗透率光伏馈入受端电网暂态电压稳定量化评估
Quantitative Evaluation of Transient Voltage Stability for Receiving-end Grid with High Penetration of Photovoltaic
摘要
Abstract
At present,the rapid development of distributed photovoltaic(PV)in China's receiving-end grid poses a threat to the security and stability of the grid with its integration,and it is urgent to carry out research on the impact of large-scale PV access on the voltage stability of the receiving-end grid.Therefore,a quantitative evaluation method for transient voltage stability is proposed for the receiving-end grid with high penetration of PV.Firstly,the characteristics of PV in operation in the actual power grid are investigated,and the components of the large-scale power grid are aggregated to establish a low-dimensional voltage stability analysis model of the receiving-end grid with high penetration of PV.Secondly,considering the branch decoupling based on active power shunt,the expression of transient voltage stability load limit is derived to realize the rapid quantitative evaluation of transient voltage stability.Finally,the small system and the actual power grid are verified,respectively.The proposed evaluation method can meet the requirements of engineering accuracy under both scenarios and various PV restoration strategies,and has higher computational efficiency than time-domain simulation.On this basis,relevant suggestions on PV integration location and performance requirements are proposed.关键词
高渗透率/光伏/受端电网/支路解耦/暂态电压稳定/量化评估Key words
high penetration/photovoltaic/receiving-end grid/branch decoupling/transient voltage stability/quantitative evaluation引用本文复制引用
徐式蕴,杨瑾瑜,彭龙..高渗透率光伏馈入受端电网暂态电压稳定量化评估[J].电力系统自动化,2025,49(9):125-134,10.基金项目
国家自然科学基金资助项目(U2166601). This work is supported by National Natural Science Foundation of China(No.U2166601). （U2166601）
