The Study on Anti-Icing Critical Current of Overhead Conductors

Abstract:

Preventing high-voltage power transmission lines ice-covered is ensure to power system the important guarantee of safe and reliable operation in the extreme weather. The size of anti-ice critical current is reasonable or not will directly affect the anti-ice effect. This paper conducts a comprehensive analysis of thermal balance process of the wire surface, and proposes a critical current model to anti-ice. In this paper, the minimum melting ice current of under the ultra-thin ice cover (0.05mm) circumstance is regarded as the anti-ice currents. Finally, by the model established in this article, calculating critical current of some typical wires in Hunan electric power grid, and the result is compared with result of existing literature made the critical current model, verified accuracy of model.

• Periodical: Advanced Materials Research (Volumes 143-144)
• Pages: 428-432
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.143-144.428
• Online since: October 2010
• Authors: Bin Zhang, Jin Wang, Jun Ying Song, Hong Ming Yang, Xi Zhe Liu
• Keywords: Anti-Ice the Critical Current, Glaze Cover Ice, High-Voltage Power Transmission Lines, Power System

References

[1] Hu Xiaohua, Wei Xiwen, Chen Bei. Recent progress in anti-icing coating for transmission line[J]. Materials Protection, 2006, 39(3): 36-38(in Chinese).

[2] Huang Qiang, Wang Jiahong, Ou Mingyong. Analysis on accidents caused by icing damage in hunan power grid in 2005 and its countermeasures[J]. Power System Technology, 2005, 29(24): 16-19(in Chinese).

[3] Jiang Xingliang, Yi Hui. Protecting and cladding ice for transmission line [M]. Beijing: China electric power press, 2002, 23-31.

[4] Xu Yuan, Liu Renwei, Li Jun. Research the reform about Hunan grid anti-icy and melt-ice system [J]. Hunan power 2003, 23(5): 24-27.

[5] Watanabe Y. Flashover tests of insulators covered with ice or snow[J]. IEEE Trans on Power Apparatus and Systems, 1978, 97(5): 1788-1793.

DOI: 10.1109/tpas.1978.354672

[6] Yuan Jihe, Jiang Xingliang, Yi Hui, Sun Caixin, Xie Shujiao. The researching situation in cladding ice of transmission lines [J]. High voltage technology, 2004(1): 6-9.

[7] Liu Heyun, Zhou Di, Fu Junping, Huang Suyi. The research for the simple rainy an ice model.

[8] Zhang Xin, Han Zhanzong. The situation and development of anti-icy technology to the transmission line [J]. Electric Switches, 2009(1): 4-7.

[9] Wen Qicheng. Feasibility research of melting-ice method to the high-voltage long line [J]. Power System Technology, 2009(1): 46-50.

[10] Chang Hao, Shi Yan, Yin Weiyang, Zhang Min. The research of technology of AC/DC melting ice [J]. Power System Technology, 2008(3): 1-6.

[11] Jiang Xingliang, Fan Songhai, Hu Jianlin, Zhang Zhijing, Suncai. Proceedings of CSEE, 2010(1): 111-116.

[12] Chen Zhi. Power system protection and control, 2010(2): 72-74.

[13] Lowe P R. An Approximating Polynomial for the Computation of Saturation Vapor Pressure[J]. J Appl Meteor, 1997, 16: 100-103.

DOI: 10.1175/1520-0450(1977)016<0100:aapftc>2.0.co;2