三电平VSC-HVDC系统谐波间谐波产生机理分析  

Mechanism Analysis of Harmonics and Interharmonics Generated by Three-level VSC-HVDC System

作　　者：吴佳佳[1] 黄俊[1] 陆圣芝[1] 

机构地区：[1]扬州供电公司,扬州225000

出　　处：《电力系统及其自动化学报》2017年第5期78-82,共5页Proceedings of the CSU-EPSA

摘　　要：为分析电压源型高压直流输电系统谐波、间谐波的传递行为和相互影响,本文针对三电平脉宽调制控制电压源型高压直流输电系统,结合开关函数的傅里叶分析,对三电平变流器交流侧和直流侧的谐波、间谐波产生机理进行了详细的理论分析和数学推导。基于Matlab/Simulink搭建了三电平脉宽调制控制电压源型高压直流输电系统模型,数字仿真结果验证了数学模型的正确性,为谐波、间谐波的测量和治理提供了理论依据。In order to analyze the transfer behavior and the interaction of harmonics and interharmonics generated in the voltage source converter based high voltage direct current （VSC-HVDC） system, and considering a three-level VSC- HVDC system with pulse-width modulation （PWM） control, the generation mechanism of harmonics and interharmon- ics in both AC and DC sides is analyzed theoretically together with mathematical formulations, where Fourier analysis of switching function is also combined. Based on Matlab/Simulink, a model of three-level VSC-HVDC system with PWM control is established. The results of simulation verify the correctness of the mathematical model, which provides a theoretical basis for the measurement and suppression of harmonics and interharmonics.

关 键 词：电压源型高压直流输电 谐波 间谐波 开关函数 三电平 脉宽调制 

分 类 号：TM711[电气工程—电力系统及自动化]