中文摘要：

针对SMC箱盒的电磁防护效能尚无量化的指标,以及对应测试方法的问题,从电气化铁道干扰源的特征出发,在分析SMC箱盒的电磁屏蔽效能模型的基础上,提出几种可行的改善室外SMC箱盒电磁防护效能的方法.进一步结合国内外主要标准和实测结果分析,提出了SMC箱盒的屏蔽效能的量化指标和适用的测试方法.

英文摘要：

To the problem that there are no quantifiable indicators and the corresponding testing methods for electromagnetic shielding performance of SMC boxes,this work analyzed electrification interference source characteristics of railway.Then electromagnetic shielding performance model for SMC boxes was proposed.With this model,several feasible improvements on electromagnetic shielding performance were proposed.Further domestic and foreign main standards and measurements analysis were taken into account,and quantifiable indicators and the suitable test method for SMC boxes were proposed.