电弧光光谱成分特性及其应用分析

摘要/Abstract

摘要：

分析了检测电弧故障的几种主要方法单一使用的劣势,阐释了科学衡量电弧光强度的方法。基于实验详细分析了电弧光的光谱组成成分及各成分在电弧光中的相对强度。分别给出了220V/200A和20kV条件下金属导体短路和高压电离时的电弧光光谱结构。在220V/200A的条件下,对于金属导体短路时的电弧光而言,大约有60%~70%的电弧光强度处于250~380nm的紫外光波段,而20kV的高电压下,由于空气受激发而电离产生的电弧光中有近90%的强度来自300~380nm的紫外光。通过分析电弧光光谱的特征,给出了电弧光以紫外光为主的重要特点及其在电力系统故障保护方面的应用前景。

关键词: 电弧光, 光谱, 紫外光, 辐射照度, 弧光保护

Abstract:

The disadvantages of several mainstream approach for detecting arc in single use only are analyzed, and the method for evaluating the intensity of arc scientifically is elucidated. Arc spectral structure of metallic conductor short circuit and ionization under high voltage in the case of 220V/200A and 20kV are provided respectively. The spectral components of the arc and the relative intensity of each component in the arc are analyzed in detail based on experimentation. Under the condition of 220V/200A, for the arc produced by short circuit of metallic conductor, intensity coming from ultra-violet (UV) light(250~380nm) is up to 60%~70% approximately, while in the case of 20KV, the intensity about 90% coming from UV light(300~380nm) in the arc formed by air ionization between two conductor. Finally, the significant characteristic that UV light is the primary component in the arc worked out by analyzing arc’s traits and the promising of its application in power system fault protection is predicted.

Key words: Arc, spectral, ultra-violet light, radiation illumination, arc protection

中图分类号:

TM77

丁心志,刘柱揆,严跃,耿开胜. 电弧光光谱成分特性及其应用分析[J]. 电气工程学报, 2015, 10(5): 75-81.

Ding Xinzhi,Liu Zhukui,Yan Yue,Geng Kaisheng. Analysis of Characteristics and Application for Arc Spectral Components[J]. Journal of Electrical Engineering, 2015, 10(5): 75-81.

图/表 5

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