Analysis and Protection of Lightning Catenary ElectromagneticImpact on the Signal Cable
[1]XU Ying-hui,YAN Zhi,LUO Ying-hong.Analysis and Protection of Lightning Catenary ElectromagneticImpact on the Signal Cable[J].Journal of Zhengzhou University (Engineering Science),2013,34(01):70-74.[doi:10.3969/j.issn.1671-6833.2013.01.017]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
34卷
Number of periods:
2013 01
Page number:
70-74
Column:
Public date:
2013-01-16
- Title:
- Analysis and Protection of Lightning Catenary ElectromagneticImpact on the Signal Cable
- Keywords:
- lighting current ; coupling; signal cable; grounding resistance; potential rising on earth; groundwire
- CLC:
- U228
- DOI:
- 10.3969/j.issn.1671-6833.2013.01.017
- Abstract:
- The signal cable was interfered by the lightning current mainly via the space inductive coupling andthe earth resistive coupling when we analyzed the way that lightning current acted on the signal cable.Accord-ing to the catenaries model of the route,electromagnetic transient software ATP-Draw was used to establishlightning catenaries insulator flashover lightning current propagation simulation circuit. Studies have shownthat : Cable sheath current coupling led to over voltage and the earth resistive coupling caused the potentialrise, and both factors have the biggest influence on signal cable. While contact line,protection line andthrough ground line current coupled to the cable core voltage is small,signal cable core over voltage along withthe increase of grounding resistance increases. By reducing the signal cable grounding resistance,separate setof earth electrode and other measures to improve the lightning interference on the signal cable. References tocatenary lightning strengthen the implementation program of Beijing-Shanghai high-speed railway; this paperalso analyzes the height of ground wire erected,and gives advice erection height to improve the catenary light-ning withstand level.
- References:
- -
- Similar References:
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Last Update:
1900-01-01