Influence of insulator string positioning on AC icing flashover performance

Zhang, Zhijin; Xin-liang, Jiang; Sun, Caixin; Hu, Jianlin; Huang, Haizhou; Gao, David Wenzhong

doi:10.1109/tdei.2012.6260009

Cited by 22 publications

(9 citation statements)

References 24 publications

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“…Equivalent surface conductivity, used to improve existing dynamic model, is determined and the computed results from the model are in good agreement with the experimental results [16]. Zhang et al [17] concludes that AC flashover voltage of ice‐covered insulator strings can be advanced by altering insulator strings positioning.…”

Section: Introductionmentioning

confidence: 89%

DC flashover performance of ice‐covered insulators under complex ambient conditions

Jiang

Shu

et al. 2016

IET Generation, Transmission & Distribution

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Section: Introductionmentioning

confidence: 89%

DC flashover performance of ice‐covered insulators under complex ambient conditions

Jiang

Shu

et al. 2016

IET Generation, Transmission & Distribution

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“…Frontiers in Materials frontiersin.org utilized on conductors are inapplicable. Changing the layout of insulators, such as V-shaped arrangement (Pu et al, 2011;Wei et al, 2014) and alternating large and small sheds (Zhang et al, 2012) can increase the icing performance of insulators. However, the above solutions do not fundamentally solve the problem of insulator icing, but only play a mitigating role.…”

Section: Coatings Aim At Insulators Icingmentioning

confidence: 99%

A review on mechanism and application of functional coatings for overhead transmission lines

et al. 2022

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Overhead transmission line is the main method of power transmission. Conductors, insulators, and towers are the primary electrical equipment of overhead transmission lines. Due to overhead transmission lines work in the natural environment, problems such as icing, corona discharge, contamination deposition, and corrosion will arise. As a result, some accidents may occur, which cause enormous economic losses. The above problems can be solved by coating functional coatings with superhydrophobic, semiconductive, anti-corrosion, and other characteristics on electrical equipment, which has the advantages of low cost and high efficiency. Therefore, functional coatings have become a research hotspot in the field of external insulation in recent years. In view of the various problems of different electrical equipment in overhead transmission lines, distinctive solutions need to be adopted, so this review classifies the coatings according to the usage scenarios and functions. In each category, first briefly outlines the causes of the electrical equipment problem, then introduces the mechanism of using this type of functional coating to solve the problem, next summarizes the development and application status of this type of coating, after summarizes the limitations of this coating, and finally provides a summary of the key issues in the research of functional coatings and gives an outlook on potential future research directions. This review intends to provide readers with a comprehensive overview of the performance principles and current application status of functional coatings for overhead transmission lines.

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“…ice shape on V-shape insulator stings, but no quantitative measurement was involved [11]. Xingliang et al proposed a calculation method for ice mass estimation on composite insulators, however, in his research, the change of ice shape is not investigated [12].…”

Section: Introductionmentioning

confidence: 99%

Study of Wind Flow Angle and Velocity on Ice Accretion of Transmission Line Composite Insulators

2020

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Ice accretion on insulators in cold regions is a serious and inevitable problem for power transmission lines, which may cause over-load and icing flashover accidents and can lead to wide power outage. In this research work, multiphase numerical simulations are carried out to investigate the effect of wind flow angle & velocity on the ice accretion of transmission line composite insulators. To verify the simulation results, lab-based icing tests are carried out in artificial climate chamber of Chongqing University. Results show that the change of wind flow angle has an obvious effect on both accreted ice shape and ice mass of insulators. When wind flow angle changes from 0 • to 90 • or −90 • , the ice mass increases before dropping sharply. Meanwhile, ice mass accretion on insulators with wind flow angle is more sensitive to the change of wind velocity. For V-shape insulator strings, the ice mass increased 47.22% in average compared to ordinary suspension insulators. The findings of this research can provide significant engineering reference for the design of transmission line in icing prone areas.

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Influence of insulator string positioning on AC icing flashover performance

Cited by 22 publications

References 24 publications

DC flashover performance of ice‐covered insulators under complex ambient conditions

DC flashover performance of ice‐covered insulators under complex ambient conditions

A review on mechanism and application of functional coatings for overhead transmission lines

Study of Wind Flow Angle and Velocity on Ice Accretion of Transmission Line Composite Insulators

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