基于连续积分法分析高速铁路与中低速磁浮线路交叉跨越对信号电缆的影响
李天石1龚孟荣2张晨1黄辉2苏立轩1霍斌1王利平1
Influence of High-speed Railway and Low-medium Speed Maglev Line Intercrossing on Signal Cable Based on Continuous Integral Method
LI TianshiGONG MengrongZHANG ChenHUANG HuiSU LixuanHUO BinWANG Liping
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作者信息:1.1.中国铁道科学研究院集团有限公司通信信号研究所， 100081， 北京；
2.2.中铁第四勘察设计院集团有限公司， 430063， 武汉
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Affiliation:Signal and Communication Research Institute, China Academy of Railway Sciences Group Co., Ltd., 100081, Beijing, China
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Key words:
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DOI:10.16037/j.1007-869x.2022.12.024
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中图分类号/CLCN:U284.93;U237;U238
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栏目/Col:研究报告
摘要:
采用连续积分法替代分段法计算了高速铁路与中低速磁浮线路交叉跨越时供电线路与信号线缆之间的互感系数；采用由实测空间磁场值导出等效施扰电流的反推法，确定了复杂供电网络的等效施扰电流。计算了各种交叉跨越条件下高速铁路牵引供电系统对中低速磁浮信号电缆，以及中低速磁浮牵引供电系统对铁路信号电缆的纵向感应电动势。以长沙中低速磁浮线路与沪昆高速铁路交叉跨越为实际案例进行计算，并与现场实测结果进行了比较分析，发现计算结果和实测结果有较好的符合性。该结果验证了影响分析计算方法的准确性。
Abstracts:
The mutual induction coefficient between power supply line and signal cable when high-speed railway and low-medium speed maglev line intercross is calculated by continuous integral method instead of segmentation method. By reverse derivation of obtaining equivalent disturbing current from site-measured space magnetic field value, the equivalent disturbing current of complex power supply network is determined. The longitudinal induced electromotive force from high-speed railway traction power supply system to low-medium speed maglev signal cables, and that from low-medium speed maglev traction power supply system to railway signal cables under various intercrossing conditions are calculated. Taking the practical case of Changsha low-medium speed maglev line and Shanghai-Kunming High-speed Railway intercrossing for calculation, the comparative analysis of calculation and site-measured results demonstrate good agreement. The result verifies the accuracy of the influence analysis calculation method.
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