基于新型换流变压器的直流输电系统滤波设计及仿真  

Designing and Simulation on Filtering of Direct Current Transmission System Based on Novel Converter Transformer

作　　者：周晋军[1] 罗隆福[2] 俞华[3] 

机构地区：[1]南昌航空大学自动化学院,江西南昌330063 [2]湖南大学电气与信息工程学院,湖南长沙410082 [3]山西电力科学研究院高压室,山西太原030001

出　　处：《南昌大学学报（工科版）》2007年第4期401-404,408,共5页Journal of Nanchang University(Engineering & Technology)

基　　金：湖南省重大科技专项资助项目(05GK1002-1)

摘　　要：论述了新型换流变压器所具有的谐波屏蔽特点。为实现这一功能,对变压器的3个绕组结构进行了改进,绕组的阻抗采用了"零阻抗"设计;实验平台为小型化了的直流输电系统,在整流侧采用了新型换流变压器;根据HVDC系统谐波含量计算方法,对实验平台的整流侧和逆变侧中的无功补偿量进行了计算及分配,并以此为依据对各类滤波器的参数进行了设计。最后运用MATLAB/Simulink分别进行了建模和仿真,变压器和滤波器都采用了设计参数,通过仿真结果表明采用新型换流变压器完全可以实现滤去谐波的功能。In this paper novel converter transformer＇ harmonics suppressing function is mainly analyzed. In order to realize the character, the three windings of the novel converter transformer adopt new structure, and their impedances are coherent with ＂zero impedance＂. The laboratory is a implied HVDC system and equipped with a novel converter transformer on the side of rectifying. According to analyzing of the harmonics in HVDC system, the total reactive power is calculated and allocated . All kinds of filters adopted there can be designed according to the volumes of compensation allocated. Finally by use of MATLAB/Simulink, the models of transformer and filters are set up consistent with the parameters of designing. Through the analyzing of the waves of simulinking , the novel converter transformer has perfect harmnics filtering function.

关 键 词：新型换流变压器 直流输电 零阻抗 

分 类 号：TM401[电气工程—电器]