Atmospheric Transmission In The Middle Ultraviolet

Stergis, C. G.

doi:10.1117/12.936539

Cited by 7 publications

(1 citation statement)

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“…UV imaging is a non-contact live detection method that can rapidly, directly, and securely detect partial discharges in equipment. The UV wavelength of corona discharge radiation ranges from 200 to 400 nm [7,8], but UV imagers can only detect UV light signals in the 240 to 280 nm range, which corresponds to the solar-blind area [9,10]. That is to say the effect of sunlight can be excluded during corona and arc discharge detection by UV imaging.…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection

Jiang

et al. 2016

Energies

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Abstract:As a non-contact discharge detection method, ultraviolet (UV) imaging can rapidly, directly, and securely detect corona discharges. Therefore, UV imaging has been widely applied to power systems. To study the influences of different factors on UV corona discharge detection, two typical types of UV imagers (DayCor ® Superb and CoroCAM ® 6D) were utilized. Results show that the observation angle has little impact on UV detection if no obstacles block the detection line of sight. Given that different UV imagers have different optimal imager gains, photon numbers under different gains could be calibrated to the values under optimal gains in accordance with the gain correction formula. Photon numbers decrease with the increase in the square of observation distance. Detection results under different observation distances could be corrected to the contrast distance after the detection of electrical equipment. The photon numbers of different UV imager types could be corrected in accordance with the instrumental correction factor. The results of this study can provide references to improve the applications and standardizations of UV imaging technology in corona discharge detection.

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Section: Introductionmentioning

confidence: 99%

Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection

Jiang

et al. 2016

Energies

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Enhanced Collection Efficiency of Photoelectrons of Negative Electron Affinity AlGaN Heterojunction Nanorod Array Photocathodes

Zhangyang

Liu

et al. 2021

JOM

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With the increasing demand for ultraviolet detectors, improving their photoelectric conversion capacity has become an interesting research topic. A theoretical model for the photoemission of field-assisted AlGaN heterojunction nanorod array photocathodes is established, which is favorable for alleviating the phenomenon of photoelectrons absorbed by adjacent nanorods. Illuminated by oblique incident light and assisted by 0.5 V/lm electric field, a maximum improvement of 42.3% in the electron collection efficiency can be implemented. The model discussed in this article can provide some theoretical references for the design and manufacture of high-efficiency solar-blind ultraviolet detectors.

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Theoretical study on photoemission of two-dimensional variable-Al composition AlxGa1-xN nanorod array photocathode

Liu

Zhangyang

et al. 2021

Applied Surface Science

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Atmospheric Transmission In The Middle Ultraviolet

Cited by 7 publications

References 0 publications

Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection

Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection

Enhanced Collection Efficiency of Photoelectrons of Negative Electron Affinity AlGaN Heterojunction Nanorod Array Photocathodes

Theoretical study on photoemission of two-dimensional variable-Al composition AlxGa1-xN nanorod array photocathode

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