基于改进BP算法的高铁对电网谐波影响的短期预测评估  

Short-term Prediction and Evaluation of the Harmonic Impact of High-speed Rail on Power Grid Based on Improved BP Algorithm

作　　者：张治一 郑强仁 李成 杨乃辉 ZHANG Zhiyi;ZHENG Qiangren;LI Cheng;YANG Naihui(State Grid Jilin Electric Power Co.,Ltd.Yanbian Power Supply Company,Yanji 133000,China)

机构地区：[1]国网吉林省电力有限公司延边供电公司,吉林延吉133000

出　　处：《电工技术》2025年第1期38-40,45,共4页Electric Engineering

基　　金：国网吉林省电力有限公司科技项目“国网延边供电公司2023年高铁电气系统对电网安全运行影响研究”(编号SGJLYB00KJJS2300538)。

摘　　要：由于牵引供电系统结构复杂,使得电网侧的工作人员难以获得其详细的数据和资料,从而难以从根源上分析高铁给电网谐波带来的影响,因此提出了一种基于改进BP算法的高铁对电网谐波影响的短期预测评估方法。首先简述了BP算法原理,提出遗传改进BP算法;其次分析了含高铁牵引供电系统的电网谐波特性,并据此建立改进BP算法短期评估模型;最后通过谐波电压总畸变率预测,观测评估值与真实值的误差范围,验证了所提方法的有效性。Due to the complex structure of the traction power supply system,it is difficult for the staff on the power grid side to obtain its detailed data and information,so that it is difficult to analyze the influence of high-speed rail on the harmonics of the power grid from the root.Based on this,this paper proposes a short-term prediction and evaluation method based on the improved BP algorithm for the harmonic impact of high-speed rail on the power grid.Firstly,the principle of BP algorithm is briefly described,and the genetically improved BP algorithm is proposed.Secondly,the harmonic characteristics of the power grid with high-speed rail traction power supply system are analyzed,and the short-term evaluation model of the improved BP algorithm is established.Finally,the effectiveness of the proposed method is verified by predicting the total distortion rate of harmonic voltage,and observing the error range between the estimated value and the true value.

关 键 词：牵引供电系统 电网谐波 改进BP算法 

分 类 号：TM922[电气工程—电力电子与电力传动]