摘要
随着电气化铁路在铁路运输中的迅猛发展以及电压等级的不断提高，电气化铁路牵引负荷对电网的负序和谐波影响也随之增大。为了建立准确有效的电气化铁路牵引负荷模型以评估其对电网的影响程度，本文根据全国部分牵引变电所的实测数据，利用Matlab仿真软件对实测数据进行分析处理，得到其概率密度函数图以及对应的累积分布函数图。通过观察发现累积分布函数图之间存在一定规律，因此根据累积分布函数图，对牵引负荷实测数据进行分类整理，得到牵引负荷实测数据的分类。
With the rapid development of electrified railways in railway transportation and the continuous rising of voltage class- es, the effect of electrified railways＂ traction load on the negative sequence and harmonic of power grid is also growing with it. In or- der to establish the accurate and effective traction load model of electrified railways so as to evaluate its degree of impact on power grid, according to the measured data of the partial traction substations nationwide, the measured data are analyzed and processed by utilizing the simulation software of Matlab to get their probability density function diagrams and the corresponding cumulative distri- bution function diagrams in this paper. A certain relation between the cumulative distribution function diagrams is found out through the observation, therefore the measured data of the traction load can be sorted to obtain the classification of the traction load mea- sured data on the basis of the cumulative distribution function graphs.
出处
《自动化信息》
2014年第3期22-24,共3页
Automation Information
关键词
电气化铁路牵引负荷
实测数据
概率密度函数图
累积分布函数图
分类
Electrified railway traction load
Measured data
Probability density function graph
Cumulative distribution functiongraph
Classification
