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低压单相非线性负荷谐波特性对民用建筑供电系统的影响
引用本文:郭红全.低压单相非线性负荷谐波特性对民用建筑供电系统的影响[J].青海师范大学学报(自然科学版),2012,28(1):103-107.
作者姓名:郭红全
作者单位:青海建筑职业技术学院机电系,青海西宁,810012
摘    要:随着电力电子技术的飞速发展,非线性负荷用电设备的种类、数量和用电量存在迅猛增加的趋势.这些非线性设备所产生的谐波对电力系统电能质量造成了严重的影响.本文通过测试几种常见的单相非线性负荷的谐波电流来证实它们确实是造成供电系统谐波污染的主要谐波源.同时,通过理论分析表明,即使是三相负载平衡的情况下,由于谐波的存在,中线上仍有可能有电流通过,而且有可能大于相线电流,故建筑电气设计时,导线截面的选择必须要考虑谐波电流的存在.

关 键 词:建筑电气  单相非线性负荷  谐波  谐波畸变率

The Influence on Harmonic Characteristics of Low Voltage Single--phase Nonlinear Loads for Power Supply System of Civil Architectural
GUO Hong-quan.The Influence on Harmonic Characteristics of Low Voltage Single--phase Nonlinear Loads for Power Supply System of Civil Architectural[J].Journal of Qinghai Normal University(Natural Science Edition),2012,28(1):103-107.
Authors:GUO Hong-quan
Institution:GUO Hong-quan(Qinghai Architectural Vocational College,Xining 810012,China)
Abstract:With the development of power electronics technology,the types,quantity and consumption of nonlinear load electricity equipment has increased rapidly in the trend of.These nonlinear devices that generate harmonics on power quality caused serious effect.In this paper,through the test of several common single-phase non-linear load harmonic current to confirm that they are indeed cause power system harmonic pollution of main harmonic sources.At the same time,through the theoretical analysis show that,even under the condition of three-phase load balance,due to the existence of harmonic,midline may still be current passes through,and is possibly bigger than the phase current,so the design of architectural electrical,the selection of wire section must consider the existence of harmonic current.
Keywords:architectural electricity  single-- phase nonlinear loader  harmonic  harmonic distortion
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