弓网电弧对机场终端全向信标台电磁骚扰的影响  

Influence of Pantograph-Catenary Arc on Electromagnetic Disturbance of Airport Terminal Omnidirectional Beacon

作　　者：朱峰[1] 高晨轩[1] 唐毓涛 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《中国铁道科学》2018年第1期116-121,共6页China Railway Science

基　　金：国家自然科学基金资助项目(U1434203)

摘　　要：选取高速电气化铁路电分相、锚段关节和普通点3个典型位置,采用点频测试和峰值、准峰值、平均值检波方式,在机场终端全向信标台(TVOR)的工作频段内开展弓网离线电弧电磁辐射测试;以某电气化铁路线路垂直下穿机场跑道为例,研究弓网离线电弧对TVOR的电磁骚扰影响。结果表明:电分相处的弓网离线电弧电磁骚扰最大,在频率为110 MHz时峰值检波的10m法值达89.4dBμV·m-1;普通点和锚段关节处的弓网离线电弧电磁辐射不会对TVOR产生影响,即便拉弧点位于铁路线路与机场跑道交叉点处,仍能满足防护率的要求,而电分相处拉弧点距铁路线路与飞机跑道交叉点的距离大于236m时,才能满足防护率要求。研究结果能够为机场区域轨道交通和机场航空的电磁兼容性设计提供依据。Three typical positions of high speed electrified railway were selected：neutral section,overlap and general point.Point frequency tests as well as the detection modes of peak,quasi peak and average value were adopted to carry out the electromagnetic radiation tests of contact loss arc between pantograph and catenary in the working frequency band of the airport terminal omnidirectional beacon station（TVOR）.Taking an electrified railway vertically undercrossing the airport runway as an example,the influence of the contact loss arc between pantograph and catenary on the electromagnetic disturbance of TVOR was studied.Results show that the electromagnetic disturbance of the contact loss arc between pantograph and catenary at the neutral section is the maximum.At the frequency of 110 MHz,the value of the 10 m method of peak detection reaches 89.4 dBμV·m^-1.The electromagnetic radiation of the contact loss arc between pantograph and catenary at the positions of overlap and general point has no impact on TVOR.Even if the arcing point is located at the intersection of railway line and airport runway,the requirements for protection rate can still be met.The requirements for protection rate can only be met when the distance between the arcing point at the neutral section and the intersection of railway line and airport runway is greater than 236 m.The findings can provide the basis for the design of electromagnetic compatibility of airport regional rail traffic and airport aviation.

关 键 词：电气化铁路 弓网电弧 机场终端全向信标台 电磁辐射测试 电磁兼容 

分 类 号：U228.1[交通运输工程—道路与铁道工程]