Background Harmonic Probabilistic Model and Its Application in Traction Power Supply System

被引：0
|
作者：
Ma X. [1 ,2 ]
Hu H. [1 ]
He Z. [1 ]
Li X. [3 ]
Wang K. [1 ]
机构：
[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu
[2] Chengdu Branch Company, Bijing Urban Construction Design & Development Group Company, Chengdu
[3] Maintenance Branch Company, State Grid Chongqing Electric Power Company, Chongqing
来源：
Hu, Haitao (hht@swjtu.edu.cn) | 2017年 / Science Press卷 / 39期
关键词：
Background harmonic; Harmonic responsibility; Monte Carlo; Probability statistics; Weibull distribution;
D O I：
10.3969/j.issn.1001-8360.2017.10.007
中图分类号：
学科分类号：
摘要：
The harmonics generated from traction loads can result in significant distortions in voltage and current waveforms in both traction power supply system(TPSS) and utility system. The accurate evaluation and simulation of the background harmonics of the traction power supply system is a key technology in the study of the harmonic problem of power system and traction loads. Based on measured data, the distributing characteristics of the background harmonic voltage at the feed lines of a traction substation during a whole day were analyzed, using probability statistics method. The Weibull distribution was used to fit the distribution characteristics. The model of 24-hour background harmonic voltage at the feed lines of the traction substation was established. The established model can accurately describe the random distribution regularity of background harmonic voltage. Based on this model, a traction load harmonic responsibility evaluation method was proposed using Monte Carlo. The harmonic responsibility of traction load to the point of common coupling was calculated in an example using the data of a high-speed rail traction substation. The results verify that the low harmonic voltage at the point of common coupling(PCC) is mainly affected by the background harmonic voltage. © 2017, Editorial Office of Journal of the China Railway Society. All right reserved.
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页码：51 / 61
页数：10
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