浙江电力2024，Vol.43Issue(8)：36-46,11.DOI:10.19585/j.zjdl.202408005
MMC控制器小信号稳定性判据研究
Research on a small-signal stability criterion for MMC controller
摘要
Abstract
High voltage direct current(HVDC)transmission based on modular multilevel converter(MMC)is widely used in large-scale renewable energy delivery.However,the lagged inertia of MMC controllers may under-mine the small-signal stability.Firstly,the mechanical inertia of synchronous generators is analyzed,and a second-order unified expression of inertia applicable to MMC controller is proposed.Secondly,based on the dynamic and in-ertial delay of MMC closed-loop controller,a small-signal stability criterion for MMC controller connected to weak power grid is presented.Finally,through simulation analysis of a double-side MMC grid-connected system,the cor-rectness of the proposed stability criterion is validated.关键词
模块化多电平换流器/闭环控制器/控制器惯性/控制器增益/小信号稳定性Key words
MMC/closed-loop controller/controller inertia/controller gain/small-signal stability引用本文复制引用
伍双喜,刘洋,朱誉,王姗,郑乐..MMC控制器小信号稳定性判据研究[J].浙江电力,2024,43(8):36-46,11.基金项目
南方电网公司科技项目(GDKJXM20220335) （GDKJXM20220335）
国家自然科学基金(52307095) （52307095）
