无线电场测量仪电磁兼容性能分析  

Performance Analysis of Electromagnetic Compatibility of Wireless Electric Field Measuring Instrument

作　　者：辛恩承[1] 袁海文[1] 陆家榆[2] 崔勇[1] 吕建勋[1] 刘鸿宇[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191 [2]中国电力科学研究院,北京100192

出　　处：《高电压技术》2016年第3期1003-1008,共6页High Voltage Engineering

基　　金：国家自然科学基金(61273165)~~

摘　　要：为了研究特高压直流传输线下的电磁环境,研制了1种无线电场测量系统。为了检测电场测量仪的电磁兼容性能,在30台样机上进行了试验。分析了电场测量仪电磁兼容性能检测的测试结果,并结合电场测量仪的工作环境和干扰途径对电场测量仪电磁兼容中易受干扰的环节进行了相应的改进。研究结果表明:电磁兼容试验项目中故障率最高的为射频电磁场辐射抗扰度试验和浪涌抗扰度试验,通过增加设备内部铜片的厚度,在设备电源端口增加瞬态抑制二极管和滤波器,可有效抑制电磁辐射和浪涌骚扰所产生的电磁干扰。To research the electromagnetic environment of ultra high-voltage direct-current（HVDC） transmission lines, we developed a wireless electric field measuring instrument. Moreover, we selected 30 prototypes to test the electromagnetic compatibility（EMC） performance of electric measuring instrument, and analyzed the test results of electric measuring instrument＇s EMC performance in detail. Combining electromagnetic working environment with interference routes of the electric measuring instrument, some important factors which were susceptible to electromagnetic interference（EMI） in testing and the corresponding improvement measures were proposed. Test results show that the most obvious faults occur in the radiated, radio-frequency, electromagnetic field immunity test and surge immunity test. But the faults of electromagnetic radiation and surge harassment can be conquered by increasing the thickness of the sheet copper inside the equipment and adding transient suppression diodes and filter at the device power supply port.

关 键 词：特高压直流 合成电场 电磁兼容 电磁干扰 无线通讯 电磁屏蔽 

分 类 号：TM937[电气工程—电力电子与电力传动] TN03[电子电信—物理电子学]