高电压技术2026，Vol.52Issue(3)：1090-1101,中插5-中插7,15.DOI:10.13336/j.1003-6520.hve.20250235
基于自适应虚拟阻抗的海上风电柔直送出系统宽频振荡抑制方法
Adaptive Virtual Impedance-based Wideband Oscillation Suppression for MMC-HVDC Grid-connected Offshore Wind Farms
摘要
Abstract
To address the challenges posed by the complex and variable operation conditions,as well as the coexistence of multi-mode oscillation in offshore wind farms connected with modular multilevel converter based high-voltage DC(MMC-HVDC)transmission systems,the mechanism and the key influencing factors of the wideband oscillations of the permanent magnet synchronous generator(PMSG)-based wind farm connected with MMC-HVDC were first revealed using the impedance analysis method.On this basis,an artificial intelligence-based adaptive method for suppressing wideband oscillations was then proposed,which integrates a virtual impedance loop into the basic controller of the send-ing-end MMC.By offline training a neural network that takes the damping coefficient of virtual impedance and system operating conditions as inputs and outputs the system's phase margin,this network is then applied for online adjustment of damping coefficients.Combined with rapid detection of wideband oscillations,adaptive suppression of wideband os-cillations is achieved.Furthermore,the method is extended to mitigate multi-mode oscillation by utilizing a neural network trained with multi-channel damping parameters,allowing for the online adjustment of multi-channel damping coefficients.Finally,the effectiveness of the proposed adaptive wideband oscillation suppression method is verified by simulations.关键词
海上风电/柔性直流输电/宽频振荡/多模态振荡/人工智能/自适应抑制Key words
offshore wind power/flexible DC transmission/wideband oscillation/multi-mode oscillation/artificial in-telligence/adaptive suppression引用本文复制引用
杨煜,吕敬,韩兴宇,高磊,李万杰,翟登辉..基于自适应虚拟阻抗的海上风电柔直送出系统宽频振荡抑制方法[J].高电压技术,2026,52(3):1090-1101,中插5-中插7,15.基金项目
国家自然科学基金(52277195). Project supported by National Natural Science Foundation of China(52277195). （52277195）
