摘要
研究了煤矿井下电快速瞬变脉冲群对电磁辐射环境的影响,分析了电快速瞬变脉冲群的频谱特性,确定了频谱分析仪的测量频率范围为3 MHz^1 GHz,并对现场测试方法进行了研究.结果表明:电快速瞬变脉冲群对煤矿井下电磁辐射环境的影响较小,矿用本质安全型电子设备对环境的电磁辐射能量较小,矿用隔爆型电气设备防爆外壳对辐射噪声的抑制效果明显.
In order to study the radiated noise caused by an electrical fast transient/burst（EFT/B） in a mine, its frequency-spectrum characteristics are analyzed. The measured frequency of spectrum analyzer is in the range of 3 MHz-1GHz, and the method of field test is investigated. The results showed that the effect of EFT/B upon the electromagnetic radiated the environment 4, in mine tunnel remained very limited, and the radiated emission energy of intrinsic-safe electronic equipment also limited. It is shown that the radiated noise can be suppressed by the explosion- proof shell of electrical apparatuses in mine.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2009年第4期336-338,355,共4页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金资助项目(50674093)
国家科技支撑计划项目(2006BAK03B00)
教育部高等学校博士学科点专项科研基金资助课题(200802900008)
关键词
电快速瞬变脉冲群
矿井
电磁辐射环境
频谱
electrical fast transient burst
mine
electromagnetic radiated environment
frequency-spectrum
