电力工程技术2026，Vol.45Issue(1)：26-38,13.DOI:10.12158/j.2096-3203.2026.01.003
新能源经柔直送出系统降阶方法及振荡风险评估
Reduced-order method and oscillation risk assessment for renewable energy with VSC-HVDC system
摘要
Abstract
Linearized modeling of large-scale renewable energy stations with a voltage-source converter-based high-voltage direct current(VSC-HVDC)system faces significant challenges.These arise from the diverse dynamic characteristics of generating units and the high system order.As a result,conventional modal analysis methods are often ineffective.To address this issue,a reduced-order analysis method is proposed for the stability evaluation and oscillation source identification of such systems.Renewable energy plants are equivalenced as multiple identical units.The equivalent systems are then reduced in order,considering the dynamic interactions with the external system.System stability is assessed using modal analysis.Oscillation sources are identified based on unstable modes.Dominant components are determined through participation factor analysis.The proposed method is validated through simulation studies.It is demonstrated that the reduced-order approach significantly lowers system order,reduces computational complexity,and effectively evaluates instability risks.Moreover,system stability is enhanced by tuning parameters of the dominant components.关键词
新能源电力系统/柔性直流输电/宽频振荡/振荡源定位/同构一致性/等值降阶Key words
renewable energy power system/voltage-source converter-based high-voltage direct current(VSC-HVDC)/wideband oscillation/identification of oscillation sources/homogeneous consistency/equivalent model order reduction分类
信息技术与安全科学引用本文复制引用
陈浩,李钊,杜文娟,王海风..新能源经柔直送出系统降阶方法及振荡风险评估[J].电力工程技术,2026,45(1):26-38,13.基金项目
国家自然科学基金资助项目(52077144) （52077144）
