某背靠背直流输电系统谐波特性分析毕业论文

摘要背靠背直流输电工程最近发展很快，到20世纪末全球已有24项背靠背直流输电工程投入运行，在美国、俄罗斯，西欧地区等都有应用。我国建设的第一个背靠背直流工程，用于华中电网和西北电网联接，额定容量为360MW，额定直流电压120kV，额定直流电流3000A，所有设备完全自主设计制造。正在建设东北、华北联网的背靠背直流输电工程，中俄联网的背靠背直流输电工程已经获批通过研究整流器和逆变器的直流侧通过平波电抗器相连，构成直流侧闭环回路。通过MATLAB建模仿真，研究系统电压电流的谐波含量，从而分析系统的谐波特性。

关键词：背靠背高压直流输电系统；谐波分析，滤波

AbstractBack-to-back HVDC transmission project developed rapidly around the world have 24back-to-back HVDC transmission project put into operation to the end of the 20th century, in theUnited States, Russia, Western Europe and other applications. China's construction of the firstback-to-back HVDC project for the Central China Power Grid and the Northwest power gridconnection, the rated capacity to 360mW, rated DC voltage 120kV, rated DC current of 3000A, allequipment is fully designed and manufactured independently. Under construction northeast, NorthChina network back-to-back HVDC transmission project, the Sino-Russian network ofback-to-back HVDC transmission project has been approvedSmoothing reactor is connected to the DC side of the rectifier and inverter constitute the DCside of the closed-loop. Simulation modeling, the harmonic content of the voltage and current ofthe research system, to analyze the harmonic characteristics of the system.

Keywords: back-to-back HVDC system; harmonic analysis, filtering

目录

摘要 IAbstract I第一章 绪 论 - 1 -1.1 课题的研究的意义、目的 - 1 -1.2 本文研究的主要内容 - 1 -第二章 背靠背高压直流输电概况 - 2 -2.1背靠背高压直流输电运行特性及其与交流输电的比较 - 2 -2.2背靠背高压直流输电系统的元件 - 3 -第三章 背靠背直流输电系统谐波分析和计算 - 6 -3.1 换流站交流侧谐波分析 - 6 -3.2 换流站直流侧谐波分析 - 14 -3.3 算例分析 - 17 -第四章 背靠背直流输电系统滤波器参数计算 - 27 -4.1 换流站交流侧滤波器参数分析 - 27 -4.2 换流站直流侧滤波器参数分析 - 30 -4.3 算例分析 - 31 -第五章 背靠背直流输电系统滤波器的MATLAB仿真及分析 - 36 -5.1 原理介绍 - 36 -5.2 仿真结果及分析 - 36 -结 论 - 42 -致 谢 - 43 -参考文献 - 44 -附录：MATLAB程序代码 - 45 -附录2：MATLAB程序代码 56