【作者】 周云； 夏向阳；

【Author】 Zhou Yun;Xia Xiang-yang;Changsha University of Science and Technology;

【机构】 长沙理工大学电气与信息工程学院；

【摘要】 基于电压源换流器型的柔性直流输电技术(VSC-HVDC)作为一种新型高压直流输电技术,具有很多技术优点和广阔的应用前景。本文详细分析了柔性直流输电技术的基本结构与工作原理,针对电网输电过程中存在的问题,提出以柔性直流输电方式来改善输电网电能质量并提高系统故障恢复能力。最后在MATLAB/SIMULINK中建立柔性直流输电系统的仿真模型,分析了系统在三相短路故障时的特点,仿真结果表明VSC-HVDC在改善电网电能质量和提高系统运行稳定性等方面具有很大的技术优势。更多还原

【Abstract】 Flexible Direct Current transmission technology(VSC-HVDC)is a new High Voltage Direct Current transmission technology based on voltage source converters.It has many technical advantages and broad prospects.This Paper analysised the basic structure of flexible HVDC and Principle, in view of the problems exist in the process of the grid transmission,and puted forward the methods of flexible HVDC to improve power quality in the grid and enhance the ability of system fault recovery.Finally, established the transmission system model using MAI,LAB/SIMULINK software,analyzed the characteristics of the system three 一 Phase short circuit, the simulation results demonstrate the excellent flexible HVDC operational stability and the reliability of improving the power quality in network.更多还原