煤矿供电系统谐波仿真模型分析试验  

Study on Harmonic Statistical Law of Coal Mine Power Supply System

作　　者：刘骁 LIU Xiao(Wanlong Energy Saving Equipment Factory,Xishan Coal and Electricity(Group)Co.,Ltd.,Taiyuan Shanxi 030053,China)

机构地区：[1]西山煤电(集团)有限责任公司万隆节能设备厂

出　　处：《机械研究与应用》2019年第6期156-158,161,共4页Mechanical Research & Application

摘　　要：针对煤矿供电系统谐波展开了研究,利用MATLAB仿真模拟软件对供电系统谐波进行了仿真模拟,得到当变频装置的调制度不变时,改变载波比对于电流谐波畸变率没有任何影响,随着二极管导通角的逐渐增大,电流谐波畸变率不断减少,两者呈现明显的线性减少关系;在对煤矿供电系统谐波概率密度分析中,概率密度分析方法弥补了传统的95%的概率大值方法下个别值变化对最终评价结果的影响,可在实际工程中推广应用。In this article,the harmonic wave of coal mine power supply system is researched,and simulation for the power system harmonic is conducted by using the MATLAB simulation software.It is concluded that when the modulation of frequency conversion device is constant,the change of the carrier ratio has no effect on the current harmonic distortion rate;as the conduction angle of the diode gradually increases,the distortion rate of the current harmonic constantly decreases,and the two have obvious linear reduction relationship.In analysis of the harmonic probability density of the coal supply system,the probability density analysis method makes up for the influence of individual value changes on the final evaluation result under the traditional 95%probability large value method,which can be widely used in the practical engineering.

关 键 词：谐波 MATLAB仿真模拟软件 电流谐波畸变率 概率密度分析方法 95%的概率大值方法 

分 类 号：TD61[矿业工程—矿山机电]