电气火花电磁场模型建立及分析
首发时间:2013-05-30
摘要:由电气设备故障产生的电气火花瞬态强电磁场不仅会造成电气设备的损坏,也会引起火灾或爆炸重大事故,因此火花的监测是很有意义的。电磁场信号时频域特性的研究有利于监测电气设备故障产生的火花。本文对电气火花形成原因进行了分析,介绍了几种不同的放电电流模型,并与检测到的电流波形进行比较和分析,选取了指数振荡衰减脉冲函数作为电气火花放电电流模型,建立了基于电偶极子模型的电气火花电磁场解析模型。
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Establishment and analysis of electromagnetic model of electrical spark
Abstract:Transient electromagnetic field caused by the electric spark will not only damage electrical equipment and facilities, but also cause the accident of explosion or fire. So it has very important significance to monitor the electrical spark. The study of time and frequency domain characteristics of spark is very useful for the monitoring. In this paper, the characters of electric spark will be analysed, discharging models were introduced and compared with the practical current waveform. The damped oscillation impulse function model was selected as the electric spark discharge current model. The electromagnetic analysis model of the electrical spark on the electric dipole model would be established.
Keywords: electrical engineering electromagnetic field electric spark
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