NDLI: Improvement on the corona model of ultra high voltage alternating current transmission lines

Content Provider	IEEE Xplore Digital Library
Author	Jian Ming Li Yu Zhang Yi Wen Li Wen
Copyright Year	2013
Description	Author affiliation: Xihua Univ., Chengdu, China (Yi Wen; Li Wen) \|\| Sichuan Electr. Power Res. Inst., Chengdu, China (Jian Ming Li; Yu Zhang)
Abstract	In designing lightning insulation margin of substation equipment in China, the attenuation and distortion of intruding wave caused by corona in the transmission lines is neglected, thus making too strict insulation requirements on the electrical equipment, what's more, the impulse corona has a great impact on the shielding failure and lightning resisting level of ultra high voltage alternating current (UHV AC) transmission line, making it necessary to study the corona effect of UHV AC transmission lines. In this paper, a corona model is put forward in which the coupling among the wires and corona in the overhead ground wire are taken into consideration and the capacity changes of wire to ground is taken into consideration as well after conducting the parallel connection between corona capacity and air capacity in the ionization zone then carrying out the series connection with the air capacity in none-ionization zone so as to simulate the corona. Such model is more favorable to the actual conditions of corona discharging. The lightning shielding failure ATP-EMTP corona model in the UHV AC transmission line, to which the corona mentioned above, is added will be established. The results show that corona has the impact on the wave passing through the transmission line, causing the attenuation and distortion of amplitude and slope of lighting wave, thus improving the shielding failure and lightning resistance level of the transmission line.
Sponsorship	IEEE Beijing Sect.
Starting Page	69
Ending Page	75
File Size	593953
Page Count	7
File Format	PDF
e-ISBN	9781479900701
DOI	10.1109/ASEMD.2013.6780710
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resistance Power transmission lines UHV AC transmission line Wires Lightning resistance level Lightning Shielding failure Impulse corona Capacitance Corona Attenuation and distortion Integrated circuit modeling
Content Type	Text
Resource Type	Article

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