电力系统电源侧牵引负荷谐波的电压畸变分析

电铁牵引负荷是大功率的三相不平衡负载，在进行分析时宜采用三相分析法。本文通过建立牵引变电所的三相谐波模型，利用C＋＋程序语言编制了仿真程序，结合现场实测数据，计算了我国电气化铁道常用的5种接线变压器在电力系统中引起的谐波畸变，对比了不同接线方式对谐波渗透的影响。

Analysis of Voltage Distortion of Traction Load Harmonics at Power Source Side of Electric Power System

Three phase analytical method should be used for analyzing three phase unbalanced load of electrified railway traction load which belongs to a high power load. On basis of setting up three phase harmonics models for the traction substation, and compiling of simulation program by applying of C＋＋ programmable language, the paper calculates the harmonics distortion caused by common used 5 types of wirings of transformers in the electric power system for our country＇s electrified railways and compares the infiltrated influences to the harmonics caused by different types of wirings.