煤矿安全2017，Vol.48Issue(11)：136-139,4.DOI:10.13347/j.cnki.mkaq.2017.11.037
矿井电气设备故障火花放电电磁场特性研究
Research on Electromagnetic Characteristics of Spark Discharge Resulting from Electrical Equipment Faults in Mine
摘要
Abstract
Electromagnetic field generated by spark discharge is a potential cause for electrical equipment failure.This research focused on analyzing the electromagnetic wave at certain spots by building numeral model of electromagnetic pulse radiation around electric discharge through applying finite difference time domain (FDTD) method.According to the analysis of discharge current pattern as well as experimental current signal,exponential oscillation damping law was established and simulated.In the experimental part,electric dipole sources by which spark discharge was produced were distributed with forced distribution method.The electric and magnetic field components at multipoint were obtained,analyzed and compared with analytical model.The result shows that the magnetic waveform has a similar rough stretch with discharge current wave.This proves that the current component has a significant effect on magnetic field in the near field area of spark discharge,which provides a theoretical support on detection and prevention of electric spark.关键词
时域有限差分/电磁场/电气故障火花/电偶极子/数值分析Key words
finite difference time domain (FDTD)/electromagnetic field/electric equipment fault spark/electric dipole/numerical analysis分类
矿业与冶金引用本文复制引用
李猛,周玲玲,童敏明,许婕..矿井电气设备故障火花放电电磁场特性研究[J].煤矿安全,2017,48(11):136-139,4.基金项目
“十三五”国家重点研发计划资助项目(2016YFC0801808) （2016YFC0801808）
