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高速铁路牵引供电接触网用带间隙避雷器的研制

, PP. 200-209

Keywords: 高速铁路,接触网,雷电防护,带外串联间隙金属氧化物避雷器,分体式结构,雷电冲击放电试验,短路试验,振动试验

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Abstract:

中国高速铁路线路高架桥路段比例大,且相对集中在雷电活动较强烈地区,牵引供电接触网雷击故障多,须采取措施加以解决。在接触网绝缘子旁并联安装带间隙避雷器是一种有效的防雷措施。根据接触网布局结构和运行可靠性要求高的特点,提出了一种与绝缘子一体化安装的避雷器分体结构型式,特别设计抱箍增强安装稳定性,提出了一种避雷器本体压力释了U型放结构可有效释放短路能量,研究选择了本体关键参数和串联间隙距离,确定了短路试验和振动试验方法和条件,对样品进行了雷电冲击放电伏秒特性试验、短路试验和振动试验,从而验证该技术性能的可靠性。最后,研制了适合接触网正馈线、接触线和加强线绝缘子使用的3种形式避雷器,并获国家发明专利授权,已在京沪高速铁路上试运行,状态良好。

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