负载特性对弓网电弧能量的影响.pdfVIP

2 0 11 年第6 期 机　　车　　电　　传　　动 №6 , 20 11 20 11 年11 月10 日 ELECTRIC DRIVE FOR LOCOMOTIVES Nov . 10, 20 11 研 负载特性对弓网电弧能量的影响 究 开 王 波，吴广宁，王万岗，高国强，崔 易 发 （西南交通大学电气工程学院，四川 成都 610031） 作者简介：王 波 （1985-）， 摘 要 ：随着列车运行速度的提高，弓网离线现象愈来愈严重，弓网电弧频繁发生，弓网电弧 男，硕士研究生，主要从事 烧蚀受电弓滑板和接触网导线，其烧蚀程度与弓网电弧能量的大小密切相关。利用弓网电弧模拟试验 电气化铁道相关的研究工 作。 系统研究不同负载功率因数、牵引电流时弓网电弧的电压电流，分析弓网电弧的平均燃弧时间与牵引 电流和负载功率因数的关系、弓网电弧能量与负载功率因数的关系。研究结果表明：电弧的平均燃弧 时间随着牵引电流的增大呈指数增长，且感性负载的燃弧时间较阻性负载的长；随着负载功率因数的 增大，弓网电弧的能量逐渐减小。 关键词：功率因数；弓网电弧；电弧能量；燃弧时间 中图分类号：U225.3 文献标识码 ：A 文章编号：1000-128X(20 11)06-00 17-04 Pantograph Arcs Energy Characters Under Various Load WANG Bo, WU Guang-ning, WANG Wan-gang, GAO Guo-qiang, CUIYi (School of Electrical Engineering, Southwest Jiaotong University, Chengdu, Sichuan 6 1003 1 China) Abstract: Due to the increasing speed of the locomotive, the pantograph-catenary disconnection was getting worse, and the pantograph arc occured frequently . The pantograph arc etched the pantograph slider and contact wire, and the etching level was influenced by arcing energy. In this paper, the arc voltage and current of different traction current and power factor was measured by pantograph-catenary arcing test system. The relationship between average arcing duration and traction current, power factor of load was analyzed, as well as the arc energy affected by power factor of load was studied. The results showed that the average arcing duration becomes longer in index with traction current increasing; the arcing duration with inductive load is longer than with resistive load; the arc energy decreases with t