电网技术2017，Vol.41Issue(8)：2436-2442,7.DOI:10.13335/j.1000-3673.pst.2017.0010
混合双馈入直流输电系统中LCC-HVDC对VSC-HVDC系统强度的影响
Effects of LCC-HVDC on System Strength of VSC-HVDC in Hybrid Dual-Infeed HVDC System
摘要
Abstract
Effective short circuit ratio (ESCR) of voltage source converter based high voltage direct current(VSC-HVDC) in hybrid dual-infeed HVDC system is investigated to evaluate VSC-HVDC system strength. Firstly, small signal model for dual-infeed HVDC system including LCC-HVDC and VSC-HVDC is developed. The model enables LCC operational impedance to be calculated theoretically. Secondly, based on LCC operational impedance, VSC-HVDC ESCR in hybrid multi-infeed HVDC system is calculated. Then taking LCC-HVDC impact into consideration, theoretical maximum available power of VSC is investigated. Thirdly, impact of controller parameters on VSC power limit is analyzed using the developed small signal model. Conclusions are validated by comparison with PSCAD/EMTDC results.关键词
混合多馈入直流输电系统/运行阻抗/有效短路比/控制参数/功率极限Key words
multi-infeed HVDC system/operational impedance/effective short circuit ratio/control parameters/maximum power limit分类
信息技术与安全科学引用本文复制引用
倪晓军,赵成勇,郭春义,刘栋..混合双馈入直流输电系统中LCC-HVDC对VSC-HVDC系统强度的影响[J].电网技术,2017,41(8):2436-2442,7.基金项目
国家自然科学基金资助项目(51507060) （51507060）
先进输电技术国家重点实验室开发基金项目.Project Supported by National Natural Science Foundation of China (51507060). （51507060）
