中国电机工程学报2017，Vol.37Issue(7)：1897-1908,12.DOI:10.13334/j.0258-8013.pcsee.160291
含VSC-HVDC交直流系统多尺度暂态建模与仿真研究
Multi-scale Modeling and Simulation of Transients for VSC-HVDC and AC Systems
摘要
Abstract
To meet the needs of accurate, fast and flexible simulation of electromagnetic and electromechanical transients in AC/DC systems, methods such as shifted-frequency analysis were developed for multi-scale modeling of voltage source converter-based high voltage direct current (VSC-HVDC)- embedded AC system. The shifted-frequency method uses the Hilbert transform, and then removes or retains the carrier at power-frequency to track slow or fast-changing transients, respectively. A shifted-frequency- based VSC model was first established, mathematical relationships of transforming the SFA-domain anddq-domain quantities were derived, then selective insertion of aπ-segment leaded to a multi-scale model of DC line, and finally a multi-scale model of VSC-HVDC/AC systems was constructed. By adjusting simulation parameters such as time-step sizes, diverse transients with multiple time-scales and in different network positions can be simulated. The simulation results show that multi-time-scale transients can be simulated accurately in which the computational cost is reduced significantly. In addition, the flexibility of simulating electromagnetic and electromechanical transients in AC/DC systems is enhanced.关键词
柔性直流输电/多尺度暂态模型/移频分析/电磁暂态/机电暂态/希尔伯特变换Key words
voltage source converter-based high voltage direct current (VSC-HVDC)/multi-scale transient model/shifted-frequency analysis/electromagnetic transients/electromechanical transients/Hilbert transform分类
信息技术与安全科学引用本文复制引用
叶华,安婷,裴玮,韩丛达,齐智平..含VSC-HVDC交直流系统多尺度暂态建模与仿真研究[J].中国电机工程学报,2017,37(7):1897-1908,12.基金项目
国家电网公司"千人计划"科技专项(SGRIzlsdgcjsyjs JS [2014]264). State Grid Corporation of China Through the 1000-Plan Project (SGRIzlsdgcjsyjs JS [2014]264). （SGRIzlsdgcjsyjs JS [2014]264）
