Improved complex filter applied in enhancing EFT/B immunity at a coal mine monitoring substation

查看全文 作　　者：SUN Ji-[1]ping;MA Feng-[1,2]ying;[1]LIChen

机构地区：[1]State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology, Beijing 100083, China;[2]College of Electronic Information and Control Engineering, Shandong Institute of Light Industry, Jinan, Shandong 250100, China

出　　处：《Journal of China University of Mining and Technology》索引2008年第18卷第1期,共5页

基　　金：Project 50674093 supported by the National Natural Science Foundation of China 摘　　要：A monitoring system is an important guarantee of safety in a production mine. However, not all monitoring substations pass the electrical fast transient/burst (EFT/B) immunity test and the explosion-proof test simultaneously. To enhance the immunity, the values of capacitance and inductance should be increased, which are actually limited by coal mine explosion-proof standards. Hence, for the first time, an active filter was applied in an electromagnetic interference (EMI) output filter. As a result, the interference within 30 MHz clearly weakened, but the frequency spectrum had a wide range. An EMI input filter and ferrite beads were adopted to restrain higher frequency interference. An output interference spectrogram of the substation was obtained with an analyzer. The results indicate that the improved complex filtering markedly help to control interference. With the support of improved complex filtering and other enhancing immunity means about I/O ports, the substation managed to pass both the EFT/B immunity test and the explosion-proof test synchronously. We conclude that improved complex filtering is of vital importance in enhancing the electromagnetic compatibility (EMC) of the coal mine monitoring system. 关键词：过滤机监视系统煤矿安全管理

相关文献

参考文献（14）
引证文献（15）
耦合文献（144）

参考文献(14)

引证文献(15)

耦合文献(144)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Improved complex filter applied in enhancing EFT/B immunity at a coal mine monitoring substation

参考文献(14)

引证文献(15)

耦合文献(144)

用户提示