摘要
煤矿井下采用专用电力电缆供电,供电电压等级比较高,其电磁辐射对机电设备和工人身体健康均有一定影响。文章使用有限元方法对矿用6 000 V屏蔽和非屏蔽电缆的工频电场、磁场的辐射情况进行了分析。数值计算结果表明,工频电场使用非屏蔽矿用电缆情况下在测试点可达到281 V/m,使用屏蔽矿用电缆后变为0.007 V/m。工频磁场则为0.3 uT,且与屏蔽层关系不大。
In coal mine,power supply use special cable,and its voltage level is relatively high.Therefore,the electromagnetic radiation maybe do harm to the electromechanical devices and workers’body health.By using finite element method,this paper analysis power frequency electrical field strength and magnetic field strength of two typical mine 6 000 V high-voltage cablemine shield and non-shield cable.Calculation result shows that power electrical strength can reach 281 V/m when using non-shield cable,while 0.007 V/m when using shield cable.At the same time,magnetic field strength are 0.3 uT,and it doesn’t matter with shield or non-shield cable.
出处
《煤炭技术》
CAS
北大核心
2010年第6期42-44,共3页
Coal Technology
