Journal of Electrical Engineering ›› 2015, Vol. 10 ›› Issue (5): 75-81.

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Analysis of Characteristics and Application for Arc Spectral Components

Ding Xinzhi1,2,Liu Zhukui2,Yan Yue3,Geng Kaisheng3   

  1. 1.China Southern Power Grid Corporation Electric Power Measurement Key Laboratory Kunming 650217 China
    2.Yunnan Power Grid Corporation Electric Power Research Institute Kunming 650217 China
    3.Nanjing Five Stone Golden Sensing Limited Company Nanjing 210042 China
  • Received:2014-11-03 Online:2015-05-25 Published:2015-05-25

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

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