摘要
在比较分析IEC 61000-3-6与GB/T 14549-93的基础上,讨论了谐波阻抗对谐波电压和电流限值之间关系的影响.电气化铁道牵引负荷与普通电力负荷在协议容量和供电容量的确定、谐波叠加指数和多谐波源同时系数3个方面存在差别,因此前者的谐波发射限值的分配方法也与后者的不同,建议采用IEC 61000-3-6中的3级评估法.以某电气化铁道为例,介绍了应用3级评估法评估牵引负荷的谐波发射水平的过程.
The impact of harmonic impedance on the relationship between harmonic voltage and harmonic current emission limits was discussed based on a comparison between IEC 61000-3-6 and GB/T 14549-93. There exist differences between traction loads and general loads in determination of the agreed power of the consumer and the total available power, harmonic summation exponent and coincidence factors of multiple harmonic sources. Therefore the distributing method of harmonic emission limits for traction loads is different from that for general loads, and application of the 3-stage method in IEC 61000-3-6 is recommended in the cases of traction loads. An example of an electrified railway in China was presented to show the application of the 3-stage method to evaluate the harmonic voltage emission levels of traction loads.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2007年第3期367-372,共6页
Journal of Southwest Jiaotong University
基金
铁道部科技研究开发项目(Z2006-047)
关键词
电气化铁道
牵引负荷
谐波
发射限值
叠加指数
同时系数
谐波阻抗
electrified railway
traction load
harmonic
emission limit
summation exponent
coincidence factor
harmonic impedance
