Ice-covered Characteristics of Conductor and Insulator Under Different Influence Factors

被引：0
|
作者：
Ma X. [1 ]
Mu Q. [2 ]
Zeng H. [1 ]
Nan J. [3 ]
Zhao C. [1 ]
Pan Z. [2 ]
机构：
[1] Electric Power Research Institute of Guizhou Power Grid Co., Ltd., Guiyang
[2] Wuhan NARI Limited Liability Company of State Grid Electric Power Research Institute, Wuhan
[3] State Key Laboratory of Power Grid Environmental Protection, China Electric Power Research Institute, Wuhan
来源：
Gaodianya Jishu/High Voltage Engineering | 2019年 / 45卷 / 09期
关键词：
Ambient temperature; Conductor icing; Equivalent relation; Icing state; Insulator ice;
D O I：
10.13336/j.1003-6520.hve.20181121004
中图分类号：
学科分类号：
摘要：
Insulator strings are important components of transmission lines, and insulator icing severely threatens safe operation of transmission lines. Lots of studies focus on the mechanism of ice coating, the process of ice coating and the characteristics of ice flashover of transmission lines at home and abroad. For the purpose of understanding the equivalence of characteristic parameters of conductor-icing and insulator-icing, we conducted icing tests on conductors and insulators under different influence factors such as wind speed and direction, moisture content, ambient temperature, analyzed the influences of the above factors on the icing state, and obtained an equivalent relation between the degree of ice cover on wire and insulator. Conclusions are drawn as follows: at a wind speed of 0~4 m/s, the thickness of icing on conductors and insulators increases with the wind speed, and before the bridge connection of icicles on insulators, their icicles grow faster than icicles on conductors. When the ambient temperature is in the range of -4~-10℃, the state of icing on conductors and insulators will increase with the lowering of temperature, and the thickness of icing on conductors and insulators is related with the growth pattern of icicles and types of icing. In the range of water content of 36~72 g/m3, there is consistency in the way of ice growth of conductors and insulators. Moreover, an equivalent relation between a conductor and an insulator is proposed. The results of the study can provide references for the state evaluation of ice cover on insulators of transmission lines and the realization of ice disaster warning system. © 2019, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：2904 / 2910
页数：6
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