摘要
以VSC-HVDC在dq旋转坐标系下的基频数学模型为基础,总结了VSC-HVDC的机电暂态数学方程。之后基于PSS/E自定义模型功能实现了VSC-HVDC机电暂态模型,并将该模型和PSCAD中VSC-HVDC电磁暂态精确模型进行了对比,仿真结果表明两者的稳态潮流十分接近,动态特性具有很好的一致性,从而验证了VSC-HVDC机电暂态模型的有效性和准确性。最后基于该模型对VSC-HVDC在实际大规模多直流馈入系统中的应用进行了研究,结果表明VSC-HVDC从根本上解决了传统直流输电的换相失败问题。
Based on the fundamental frequency mathematical model of VSC-HVDC power transmission in d-q rotating dq rotary coordinate system, the electromechanical transient mathematical equations of VSC-HVDC power transmission are summarized, afterwards a electromechanical transient model for VSC-HVDC power transmission is achieved based on user-defined function of PSS/E and the achieved model is compared with the precise electromagnetic transient model for VSC-HVDC power transmission in PSCAD, and simulation results show that the steady state power flows from the two models are very similar and their dynamic characteristics are highly consistent each other, thus the effectiveness and accuracy of the achieved electromechanical transient model for VSC-HVDC power transmission are verified. Finally, using the achieved model the application of VSC-HVDC power transmission in actual large-scale multi-infeed HVDC power transmission system is researched, and research results show that using VSC-HVDC power transmission technology the commutation failure occurred in traditional HVDC power transmission system can be radically resolved.
出处
《电网技术》
EI
CSCD
北大核心
2013年第6期1672-1677,共6页
Power System Technology
基金
国家863高技术基金项目(2012AA050205)~~
关键词
电压源换流器
高压直流输电
机电暂态
建模
电磁暂态
仿真
voltage source converter
high voltage directcurrent（HVDC）power transmission
electromechanicaltransient
modeling
electromagnetic transient
simulation
