基于改进Messinger覆冰模型导线防冰临界电流计算及其影响因素分析

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Abstract This paper improves the Messinger icing model by establishing the water film flow model on conductor surface based on the water film flowing on conductor surface during the current anti-icing periods, to obtain the conductor anti-icing critical current under different icing meteorological conditions. The calculation methods about the local collision coefficient (LCC) of super-cooled water droplets, the local heat transfer coefficient (LHTC) on conductor surface and the local freezing coefficient (LFC) of liquid water on conductor surface are determined. It is the first time to calculate the LHTC and LFC on conductor surface. Moreover, the automatic computation of conductor anti-icing critical current is achieved based on the calculated LFC. The results show that the LCC, LHTC and LFC on conductor surface reach their maximum values in the position of conductor stagnation point, where the LFC decreases with increasing the conductor current. Wind speed and temperature are the main factors affecting the anti-icing critical current, while the water content and the diameter size of droplet have little effects on the critical current.

Key words： Conductor icing anti-icing critical current local collision coefficient local freezing coefficient control body

Received: 18 August 2014 Published: 13 October 2016

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TM216

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	Liu Guote
	Hao Yanpeng
	Yang Lin
	Chen Yan
	Zhong Rongfu

Cite this article:

Liu Guote,Hao Yanpeng,Yang Lin等. Caculation and Influencing Factors Analysis of Conductor Anti-Icing Critical Current Based on Improved Messinger Icing Model[J]. Transactions of China Electrotechnical Society, 2016, 31(18): 176-183.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I18/176

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