电力系统及其自动化学报2026，Vol.38Issue(3)：77-88,12.DOI:10.19635/j.cnki.csu-epsa.001665
风电经柔性直流输电并网系统频率响应特性分析方法
Analysis Method for Frequency Response Characteristics of Wind Power Grid-connected System via Flexible DC Transmission
张芳 1李正茂 1吕凌飞1
作者信息
- 1. 天津大学智能电网教育部重点实验室,天津 300072
- 折叠
摘要
Abstract
Aimed at the frequency response characteristics of a doubly-fed wind farm grid-connected system via modular multilevel converter-based high voltage DC(MMC-HVDC)transmission,a detailed frequency response model includ⁃ing the dynamics of a control system is derived in this paper based on the small-signal linearization theory.Compared with the existing simplified frequency response model which is established mainly by using an inertia link instead of de⁃tailed models of the control system,the new model solves the problem of deviation between the simplified frequency re⁃sponse characteristics of the system and its actual frequency response characteristics.On this basis,the H2 and H∞norms from the robust control theory are introduced as quantitative indexes to evaluate the system capability in suppress⁃ing the frequency disturbances.The H2 and H∞norms of a transfer function between the frequency change and load dis⁃turbance of the system are calculated,the influence of the system's frequency adjustment parameters on frequency re⁃sponse characteristics is analyzed,and a tuning method for the system's frequency adjustment parameters based on H2 and H∞norms is proposed.The effectiveness of the established detailed frequency response model and system frequency response characteristics analysis method is verified through simulations,providing a theoretical basis and reference for studying the precise frequency response characteristics and tuning for frequency adjustment parameters of the wind pow⁃er grid-connected system via MMC-HVDC.关键词
风电并网/模块化多电平换流器/高压直流输电/功频传递函数/频率响应模型/H2与H∞范数Key words
wind power grid-connection/modular multilevel converter(MMC)/high voltage DC transmission(HVDC)/power-frequency transfer function/frequency response model/H2 and H∞norms分类
信息技术与安全科学引用本文复制引用
张芳,李正茂,吕凌飞..风电经柔性直流输电并网系统频率响应特性分析方法[J].电力系统及其自动化学报,2026,38(3):77-88,12.
