VSC-HVDC机电暂态仿真建模及仿真  

Electromechanical Transient Modeling and Simulation for Voltage Source Converter Based HVDC Power Transmission

作　　者：刘昇[1] 徐政[1] 唐庚[1] 华文 薛英林[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027 [2]浙江省电力公司电力科学研究院,浙江省杭州市310014

出　　处：《电网技术》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)~~

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.

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 

分 类 号：TM714[电气工程—电力系统及自动化]