摘要
Abstract
Since the construction of electrified railway,railway operation has been most seriously affected by lightning damage,which has been a difficult problem to solve today.In order to reduce the failure rate of electrical equipment caused by lightning and ensure the safety and reliability of railway transportation,early researchers studied the lightning damage of electrical equipment of Japanese electrified railway and formulated corresponding lightning protection countermeasures.At the same time,the research on light-ning protection has been highly valued by many national railway operation departments.However,with the change of catenary structure,the concrete column replaced by steel pipe column,and the innovation of electrical equipment technology such as the electronization of power supply and transformation and sig-nal equipment,the continuous renewal of lightning observation technology and the high refinement of lightning overvoltage simulation program,the lightning damage countermeasures also need to be im-proved.Therefore,the author makes an in-depth analysis on the lightning damage countermeasures of Japanese electrified railways and puts forward detailed strategies.Combined with auxiliary scientific and technological means such as lightning observation and lightning surge simulation program,lightning dam-age countermeasure diagram,lightning density diagram and independently developed VSTL simulation software,the author comprehensively considers technical and economic benefits,seeks lightning protec-tion countermeasures more suitable for our company,explores the effect evaluation of lightning damage countermeasures,and constantly improves the relevant lightning protection design contents,achieving ac-curate lightning protection effect.关键词
电气化铁道/雷害分析/雷害对策/直流牵引供电系统/交流牵引供电系统/通信信号系统/VSTL仿真软件Key words
electric railway/lightning damage analysis/lightning damage countermeasures/DC traction power supply system/AC traction power supply system/communication and signal system/VSTL simulation software
