摘要
为了评估碳纤维动车组车体由于导电性弱于传统铝合金车体而引起的的车体过电压危害,分析并测试了碳纤维材料的阻抗特性,然后基于某公司改进设计的半碳纤维半铝合金车体结构,建立了动车组浪涌过电压电路模型,通过仿真分析升降弓瞬间司机室车体浪涌过电压的传输特性,得到升弓最大车体过电压为2.4 kV,对车载电子设备造成安全隐患,并提出利用金属接地网络为车内设备提供接地点的防护方法,有效保证了车内设备的安全性。
In order to evaluate the over-voltage damage of CFRP(Carbon fiber reinforced polymer/plastic)car body due to its poorer conductivity than traditional aluminum alloy car body,the impedance characteristics of CFRP were analyzed and tested,and the surge overvoltage circuit model of CFRP train body was established based on the improved design of semi-CFRP semi-aluminum alloy structure.The transmission characteristics of surge overvoltage of the cab body at the moment of pantograph raising/dropping were analyzed by simulation.The results show that the maximum overvoltage in pantograph raising reaches 2.4 kilovolts,which is a potential safety hazard for on-board equipment.It is proposed that the metal grounding network is installed in cab body to provide grounding points for on-board equipment,which is effectively ensures the safety of the on-board equipment.
作者
徐跃
冯玉明
白刚
边永亮
王富强
郭文卿
XU Yue;FENG Yuming;BAI Gang;BIAN Yongliang;WANG Fuqiang;GUO Wenqing(CRRC Qingdao Sifang Co.,Ltd.,Qingdao,Shandong 266111,China;The 33rd Research Institute of China Electronics Technology Group Corporation,Taiyuan,Shanxi 030032,China)
出处
《机车电传动》
北大核心
2022年第1期8-12,共5页
Electric Drive for Locomotives
基金
山西省国际科技合作项目(201803D421001)。
关键词
碳纤维材料
阻抗特性
动车组
过电压防护
高速列车
仿真
CFRP
impedance characteristics
EMU
overvoltage protection
high speed train
simulation
