基于差分进化的自然对流条件下接触线动态温度模型  

Dynamic Temperature Model for Contact Wire under Natural Convection Conditions Based on Differential Evolution

作　　者：王东禹 韩正庆[1] 刘淑萍[1] 高仕斌[1] WANG Dongyu;HAN Zhengqing;LIU Shuping;GAO Shibin

机构地区：[1]西南交通大学电气工程学院

出　　处：《电气化铁道》2024年第5期49-57,共9页Electric Railway

基　　金：中国国家铁路集团有限公司科技研究开发计划“电气化铁路接触网导线温度保护技术研究”(N2021G028)。

摘　　要：电气化铁路接触线温度是牵引供电系统安全运行的关键参数。既有的IEEE、CIGRE模型主要针对钢芯铝绞线和电力电缆这类规则外形导线,不适用于带有双沟槽的接触线。为研究接触线温度,本文通过优化现有模型,提出了接触线动态温度模型(CDT模型),并利用差分进化(DE)算法对模型的未知参数进行参数辨识。通过对比试验数据验证了CDT模型的准确性和利用DE算法对CDT模型进行参数辨识的可行性。结果表明:在自然对流条件下,CDT模型计算结果准确度更高,不同试验结果中相对于CIGRE和IEEE标准模型,CDT模型的最大相对误差分别降低了5.28%和9.28%,最大均方根误差分别降低了1.03和3.96;静态负载下,随着接触线温度升高,CDT模型的准确性更稳定,CIGRE和IEEE标准模型的准确性降低趋势明显;相对于静态负载,在动态负载下CIGRE和IEEE标准模型对于接触线的温度计算误差更大,而采用CDT模型能更加准确地计算接触线温度。The temperature of contact wires of electrified railway is a key parameter for safe operation of the traction power supply system.The existing IEEE and CIGRE models are mainly designed for regular shaped conductors such as aluminum cable steel reinforced and electric power cables,and are not suitable for contact wires with double grooves.To study the temperature of contact wires,the paper proposes a Contact Wire Dynamic Temperature Model(CDT model)by optimizing existing models,and by application of Differential Evolution(DE)algorithm to identify unknown parameters of the model.The accuracy of the CDT model and the feasibility of application of the DE algorithm for parameter identification of the CDT model are verified through comparative experimental data.The results show that under natural convection conditions,the accuracy of the CDT model calculation is higher.Compared with the CIGRE and IEEE standard models,the maximum relative error of the CDT model decreased by 5.28%and 9.28%,and the maximum root mean square error decreased by 1.03 and 3.96,respectively,in different experimental results.Under static load,as the temperature of the contact wire increases,the accuracy of the CDT model becomes more stable,while the accuracy of the CIGRE and IEEE standard models shows a significant decrease tendency.Compared to static loads,CIGRE and IEEE models have great calculation errors for contact wire temperature under dynamic loads,while application of CDT model can more accurately calculate contact wire temperature.

关 键 词：接触线 温度模型 差分进化 参数辨识 自然对流 

分 类 号：U225.41[交通运输工程—道路与铁道工程]