中国电机工程学报2016，Vol.36Issue(14)：3771-3780,10.DOI:10.13334/j.0258-8013.pcsee.152760
海上风电场经MMC-HVDC并网的阻抗建模及稳定性分析
Impedance Modeling and Stability Analysis of MMC-based HVDC for Offshore Wind Farms
摘要
Abstract
Modular multilevel converter-based high- voltage DC transmission (MMC-HVDC) technology has become an ideal solution for grid integration of large and remote offshore wind farms. However, due to the characteristics of MMC topology, oscillation or instability phenomena might occur in wind farms integrated through MMC-HVDC systems. AC-side small-signal impedance models of the three-phase MMC were first developed in this paper. The impedance-based Nyquist stability criteria was used to determine the stability of the interconnected system and to predict the potential resonance frequency and stability margin. In addition, the analysis indicates that the circulating current control of the MMC has a significant effect on the stability of the interconnected system. The detailed time-domain simulation models of a 21-level MMC and wind farm were built based on Matlab/Simulink. Both the simulation results and on-site recorded waveforms validate the theoretical analysis.关键词
海上风电场/模块化多电平换流器/高压直流输电/稳定性/次同步振荡/阻抗Key words
offshore wind farm/modular multilevel converter (MMC)/high-voltage DC transmission (HVDC)/stability/subsynchronous oscillation/impedance分类
信息技术与安全科学引用本文复制引用
吕敬,蔡旭,张占奎,迟永宁..海上风电场经MMC-HVDC并网的阻抗建模及稳定性分析[J].中国电机工程学报,2016,36(14):3771-3780,10.基金项目
国家863高技术基金项目(2013AA050601)；上海市科委基金资助项目(13dz1200202)。 Project Supported by the National High Technology Research and Development of China (863 Program)(2013AA050601) （2013AA050601）
Shanghai Science and Technology Committee Fund (13dz1200202) （13dz1200202）
