| 铁路漏泄同轴电缆直流隔断器设置方案研究 |
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| 引用本文： | 刘立海. 铁路漏泄同轴电缆直流隔断器设置方案研究[J]. 铁道标准设计通讯, 2018, 0(3): 144-148 |
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| 作者姓名： | 刘立海 |
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| 作者单位： | 中铁第四勘察设计院集团有限公司; |
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| 摘 要： | 为解决电气化铁路中因漏泄同轴电缆(以下简称为漏缆)直流隔断器设置不当而导致其损坏的问题,开展铁路直流隔断器设置方案的研究。首先计算静电感应电压和电磁感应电压的大小,给出计算示例;分析直流隔断器设置的必要性和作用;最后通过方案比选提出了建议的设置方案。每隔500~750 m在漏缆一端设置直流隔断器,阻断直流和低频电流通过漏缆,防止漏缆上的电磁感应电压超过规范的限定值;漏缆另一端接地,对静电感应进行防护和消除,保证人身和设备安全。
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| 关 键 词： | 电气化铁路 直流隔断器 漏泄同轴电缆 牵引网 静电感应 电磁感应 |
Study on the Setting Scheme of DC Breaker of Railway Leaky Coaxial Cable |
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| Affiliation: | ,China Railway SIYUAN Survey and Design Group Co.,Ltd. |
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| Abstract: | To solve the problem of damages to DC breaker of leaky coaxial cable(LCX) due to improper setting and installation of DC breaker in electrified railways,setting schemes of DC breaker are studied.Firstly,the electrostatic induction voltage and electromagnetic induction voltage are calculated,and examples are presented.Secondly,the necessities and functions of DC breaker are analyzed.Finally,recommended setting scheme is proposed after comparison.One DC breaker is installed at one end of the LCX each every 500 ~ 750 meters to prevent DC and low frequency current from passing through the LCX and to avoid the electromagnetic induction of the LCX exceeding the limit specified in the corresponding standards.The other end is grounded to prevent and eliminate electrostatic induction for the protection of people and equipment. |
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| Keywords: | Electric railway DC breaker Leaky coaxial cable(LCX) Traction network Electrostatic induction Electromagnetic induction |
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