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Modeling and Experimental Investigat...

Yin, Fanghui.

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Modeling and Experimental Investigation of the Effects of Electric Field and Corona Discharge on Ice Accreted on High-Voltage Conductors = = Modelisation et etude experimentale des effets du champ electrique et des decharges de couronne sur l'accumulation de glace sur les conducteurs haute tension.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Modeling and Experimental Investigation of the Effects of Electric Field and Corona Discharge on Ice Accreted on High-Voltage Conductors =/
其他題名:	Modelisation et etude experimentale des effets du champ electrique et des decharges de couronne sur l'accumulation de glace sur les conducteurs haute tension.
作者:	Yin, Fanghui.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
面頁冊數:	166 p.
附註:	Source: Dissertation Abstracts International, Volume: 78-12(E), Section: B.
Contained By:	Dissertation Abstracts International78-12B(E).
標題:	Applied mathematics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10599801
ISBN:	9780355060072

Modeling and Experimental Investigation of the Effects of Electric Field and Corona Discharge on Ice Accreted on High-Voltage Conductors = = Modelisation et etude experimentale des effets du champ electrique et des decharges de couronne sur l'accumulation de glace sur les conducteurs haute tension.
Yin, Fanghui.

Modeling and Experimental Investigation of the Effects of Electric Field and Corona Discharge on Ice Accreted on High-Voltage Conductors =Modelisation et etude experimentale des effets du champ electrique et des decharges de couronne sur l'accumulation de glace sur les conducteurs haute tension. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 166 p.

Source: Dissertation Abstracts International, Volume: 78-12(E), Section: B.

Thesis (Ph.D.)--Universite du Quebec a Chicoutimi (Canada), 2017.

Atmospheric icing affects a wide variety of man-made structures in many countries. It is generally well known to occur in countries like Japan, Canada, Iceland, Russia as well as China. When the power transmission lines are subject to icing, huge corona loss due to corona discharge or rupture of transmission lines may be caused because of the ice load. In the worst-case scenario, it would lead to power outage and collapse of tower.

ISBN: 9780355060072Subjects--Topical Terms:

2122814
Applied mathematics.

Modeling and Experimental Investigation of the Effects of Electric Field and Corona Discharge on Ice Accreted on High-Voltage Conductors = = Modelisation et etude experimentale des effets du champ electrique et des decharges de couronne sur l'accumulation de glace sur les conducteurs haute tension.
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245 1 0 $a Modeling and Experimental Investigation of the Effects of Electric Field and Corona Discharge on Ice Accreted on High-Voltage Conductors = $b Modelisation et etude experimentale des effets du champ electrique et des decharges de couronne sur l'accumulation de glace sur les conducteurs haute tension.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 166 p.
500 $a Source: Dissertation Abstracts International, Volume: 78-12(E), Section: B.
500 $a Advisers: Masoud Farzaneh; Xingliang Jiang.
502 $a Thesis (Ph.D.)--Universite du Quebec a Chicoutimi (Canada), 2017.
520 $a Atmospheric icing affects a wide variety of man-made structures in many countries. It is generally well known to occur in countries like Japan, Canada, Iceland, Russia as well as China. When the power transmission lines are subject to icing, huge corona loss due to corona discharge or rupture of transmission lines may be caused because of the ice load. In the worst-case scenario, it would lead to power outage and collapse of tower.
520 $a The objective of this study is to investigate the effects of electric field and corona discharge on ice accreted on high-voltage conductor. The research was approached by two methods, experiments and simulations. To achieve this objective, experiments were carried out by means of a corona cage in a climate room at CIGELE laboratories, University of Quebec in Chicoutimi (UQAC) and the simulations were performed by a finite element software. Rime and glaze were considered in the present study as they are thought to be the most adverse conditions for power transmission lines. The experimental results showed that the electric field has a significant influence on ice formation. Under both rime and glaze ice conditions, the weight of ice accreted on the surface of the conductor increased with electric field strength up to 20 kV rms/cm and then decreased as it is increased further. Without voltage applied on the conductor, about half of the total weight of glaze ice can be contributed by the icicle accretion. In the presence of electric field, the weight percentage of icicles could be lowered to 14%. When the water film was freezed right after they reached the bottom of the conductor, the icicle spacing was independent of electric field. If developed water pedants were formed before they were freezed, the icicle spacing decreased with an increase of electric field. Due to the repulsion force of the pendant drops at the icicle tip, the presence of electric field can result in an angle between adjacent icicles accreted on the conductor. This angle increased with an increase of conductor surface electric field.
520 $a The corona loss was mainly contributed by the fundamental component. The contribution of other harmonic components on corona loss can be neglected, except for the harmonic component which was already significant in the applied voltage. The power factor of the 3rd harmonics can be used to determine whether the conductor is running below or above its corona onset voltage. If it was close to 0.5, the conductor was running near its corona onset voltage. If it was higher than 0.5, it can be expected that the conductor was operated beyond its corona onset voltage. According to the simulated results, it was found that when the electric field is no higher than 20 kVrms/cm, the ice accretion model works well. However, with the electric field increased further, the results diverged because of the generation of corona wind.
590 $a School code: 0862.
650 4 $a Applied mathematics. $3 2122814
650 4 $a Electromagnetics. $3 3173223
650 4 $a Physics. $3 516296
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