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Study on the recombination rate of space charge in LDPE film during the short-circuit discharge process by photon calculation

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6 Author(s)
Chun Xiao ; Pohl Inst. of Solid State Phys., Tongji Univ., Shanghai, China ; Yewen Zhang ; Jiaqi Lin ; Feihu Zheng
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In this paper, recombination rate of charge in low density polyethylene (LDPE) film was figured out by measuring the photon released from the film when the film was short-circuit discharge after been set to high voltage of direct current (HVDC) for certain duration. Under a series of designed condition including changing the polarity of HVDC, the value of applied field and the time duration of applied field, the number of photon was measured to calculate the charges' combination rate. The result showed that the recombination rate was sensitive to the applied filed but insensitive to the applying duration, and when the field was higher than 80 MV/m, the number of released photon increased slowly. With the usage of date obtained both from our experiment and other papers, the luminous efficiency of LDPE film was calculated out with the result of 5.9 times 10-6, and the charges' recombination rate during 0.2 second at the beginning stage of short-circuit is around 2.8%.

Published in:

Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the

Date of Conference:

19-23 July 2009