电测与仪表2026，Vol.63Issue(8)：54-67,14.DOI:10.19753/j.issn1001-1390.2026.08.006
频率耦合影响下海上风电经附加频率控制MMC-HVDC并网稳定性研究
Study on the stability of offshore wind power grid-connected by additional frequency control MMC-HVDC under the influence of frequency coupling effect
摘要
Abstract
The grid-connected stability of offshore wind power transmission system via modular multilevel converter based high voltage direct current(MMC-HVDC)has attracted much attention in recent years.However,due to the decoupling effect of MMC-HVDC cables,the inertia of the offshore wind power transmission system via MMC-HVDC is missing.Meanwhile,the frequency coupling effect is also an important factor affecting the grid-connected stability of the offshore wind power transmission system via MMC-HVDC.Therefore,this paper aims to explore the frequency support effect of additional frequency control on the grid-connected system of offshore wind power through MMC-HVDC,complement the influence of active frequency support control on the AC admittance of MMC-HVDC,and improve the small disturbance stability analysis method of offshore wind power through MMC-HVDC under the frequency coupling effect.Firstly,an additional frequency control is put into the actual engineering model of the di-rect drive wind farm connected to the grid through MMC-HVDC,and the admittance models of the wind farm side converter station and the MMC converter station under the additional frequency control are established respectively.Secondly,the small disturbance stability analysis method of grid-connected systems under the influence of frequency coupling effect is explored.Then,the frequency coupling effect of the system is measured quantitatively,and the influence of additional frequency control on the system frequency coupling effect is concerned.Finally,a resonant suppression measure is proposed,and electromagnetic transient simulation is carried out by PSCAD/EMTDC to ver-ify the effectiveness of additional frequency control,the accuracy of the established impedance model,the correct-ness of grid-connected stability analysis and the effectiveness of the resonant suppression measure.关键词
海上风电/柔性直流输电/附加频率控制/频率耦合/小干扰稳定性Key words
offshore wind power/flexible DC transmission/additional frequency control/frequency coupling/small disturbance stability分类
信息技术与安全科学引用本文复制引用
安然然,王泽昊,陶然,梁晓兵,陈锦攀,黄振琳,汪娟娟..频率耦合影响下海上风电经附加频率控制MMC-HVDC并网稳定性研究[J].电测与仪表,2026,63(8):54-67,14.基金项目
国家自然科学基金资助项目(52277102) （52277102）
中国南方电网有限责任公司科技项目(GDKJXM20222569) （GDKJXM20222569）
