针对电气化铁路电分段电弧的建模分析与抑制方法研究  

Suppression of Arcing Generated by Articulated Split-zone Insulator on Electrified Railways

作　　者：周虹屹 刘志刚[1] 邓云川[2] 杨云涵 高仕斌[1] ZHOU Hongyi;LIU Zhigang;DENG Yunchuan;YANG Yunhan;GAO Shibin(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611730,Sichuan Province,China;China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610036,Sichuan Province,China)

机构地区：[1]西南交通大学电气工程学院,四川省成都市611730 [2]中国中铁二院工程集团有限责任公司,四川省成都市610036

出　　处：《电网技术》2023年第6期2583-2593,共11页Power System Technology

基　　金：国家自然科学基金项目(U1734202);四川省科技计划科技创新人才(2021JDRC0008);中铁二院科研项目(KYY 2020033(20-21),KYY2020132(20-22))。

摘　　要：针对电分段电弧,首先基于黑盒电弧模型,考虑列车过电分段时的动态过程,建立了电分段动态电弧模型;然后根据五跨锚段关节式电分段的实际机械结构,在PSCAD中建立了计及电分段的车–网集总参数电路模型;将电弧模型以电弧电阻的形式嵌入车–网电路模型中进行仿真,通过仿真结果分析电分段电弧的动态特性,并将仿真结果与试验结果进行了对比验证;最后基于电分段电弧的特性,提出了加装容阻吸收装置、改变电分段抬升角以及改变列车过电分段速度3种方案对电分段电弧进行抑制研究。研究结果显示:加装阻容吸收装置、抬升电分段与调节列车出电分段速度均对电分段电弧有明显的抑制效果;对于列车进电分段,在阻容吸收装置的阻值为75和225Ω时和电分段抬升为200mm时,对电弧的抑制效果较好;对于列车出电分段,在阻容吸收装置的阻值为100Ω时和电分段抬升为120mm时,对电弧的抑制效果较好,提升列车速度对电弧有明显抑制效果。Aiming at the arc on articulated split-zone insulators,this paper firstly establishes a dynamic arc model based on the black-box arc model considering the dynamic process of the train passing the articulated split-zone.Then,a circuit model of the vehicle-grid set is established in the PSCAD which considers the actual mechanical structure of the five-span articulated split-zone insulator.Further,the arc model is embedded in the circuit model for simulation,verifying the dynamic characteristic of the insulator arc.Finally,based on this characteristic,this paper proposes the three suppression schemes of arc including the installation of the capacitive resistance absorption device,the changing of the lifting of articulated split-zone insulator and the speed of train,and carries out the sensitivity analysis of these schemes.Results show that these three schemes have obvious suppression effects on the insulator arc.For the train entering the articulated split-zone insulator,the suppression effect is ideal when the resistance values of the absorption device are 75 and 225Ωand the lifting of articulated split-zone insulator is 200mm.For the train leaving the articulated split-zone insulator,the suppression effect is ideal when the resistance value of the absorption device is 100Ωand the lifting of articulated split-zone insulator is 120mm,and increasing the train speed has also an obvious suppression effect on the arc.

关 键 词：电气化铁路 列车受流安全 电分段电弧 黑盒电弧模型 电弧抑制 

分 类 号：TM721[电气工程—电力系统及自动化]