Caculation and Influencing Factors Analysis of Conductor Anti-Icing Critical Current Based on Improved Messinger Icing Model
Liu Guote1,2, Hao Yanpeng1, Yang Lin1, Chen Yan1, Zhong Rongfu1
1. School of Electric Power South China University of Technology Guangzhou 510640 China; 2. Dongguan Power Supply Bureau Guangdong Power Grid Corporation Dongguan 523000 China
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.
刘国特, 郝艳捧, 阳林, 陈彦, 钟荣富. 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[J]. 电工技术学报, 2016, 31(18): 176-183.
Liu Guote, Hao Yanpeng, Yang Lin, Chen Yan, Zhong Rongfu. Caculation and Influencing Factors Analysis of Conductor Anti-Icing Critical Current Based on Improved Messinger Icing Model. Transactions of China Electrotechnical Society, 2016, 31(18): 176-183.
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