[1]孟遂民,卢银均,杨鸽子.输电线压弯除冰机理研究[J].防灾减灾工程学报,2019,39(01):31-36.[doi:10.13409/j.cnki.jdpme.2019.01.005]
 MENG Suimin,LU Yinjun,YANG Gezi.Research on Bending De-icing Mechanism of Transmission Line[J].Journal of Disaster Prevention and Mitigation Engineering,2019,39(01):31-36.[doi:10.13409/j.cnki.jdpme.2019.01.005]
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输电线压弯除冰机理研究()
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防灾减灾工程学报[ISSN:1672-2132/CN:32-1695/P]

卷:
39卷
期数:
2019年01期
页码:
31-36
栏目:
论文
出版日期:
2019-02-28

文章信息/Info

Title:
Research on Bending De-icing Mechanism of Transmission Line
文章编号:
1672-2132(2019)01-0031-06
作者:
孟遂民1 卢银均2 杨鸽子1
1.三峡大学电气与新能源学院, 湖北 宜昌 443002; 2.国网湖北省电力有限公司荆门供电公司, 湖北 荆门 448000
Author(s):
MENG Suimin1 LU Yinjun2 YANG Gezi1
1.College of Electrical Engineering & Renewable Energy,China Three Gorges University, Yichang 443002, China; 2.Jingmen Power Supply Company,State Grid Hubei Electric Power Co.,Ltd.,Jingmen 448000, China
关键词:
输电线路 覆冰 弯曲应力 压弯除冰
Keywords:
transmission line icing bending stress compression bending de-icing
分类号:
TM71
DOI:
10.13409/j.cnki.jdpme.2019.01.005
文献标志码:
A
摘要:
输电线路除冰应满足有效除冰且不损伤导线。结合覆冰脆性材料的特点,提出了一种压弯除冰的方法,即约束一段覆冰导线,在破冰轮的作用下使其压弯,使覆冰从导线上破碎脱落。通过推导覆冰导线弯曲应力方程,建立了覆冰导线实体模型,分析其在不同破冰轮半径、覆冰厚度和加载力下的覆冰和导线的应力变化。结果表明:覆冰挤压应力和弯曲应力随着加载力的增加而增大,在计算参数范围内,均超过导线覆冰的破碎强度,且导线应力未超过破坏强度,验证了压弯除冰方法的可行性。破冰轮半径和覆冰厚度增加,不利于压弯除冰。推导的覆冰导线弯曲应力公式可为设计压弯除冰机器人提供参考,为保证线路有效除冰,可适当增大加载力以达到理想的除冰效果。
Abstract:
Transmission lines de-icing should be effectively done and should not cause any damage to the conductor.Considering the brittle characteristics of the ice-covering materials, this article puts forward a deicing method by bending, i.e.to restrict a length of ice-covering conductor and bend it by using ice breaking wheels so that the covered ice will be crushed and fall off from the conductor.By deriving the equation of bending stress of ice-covered conductor, a solid model of ice-covering conductor is built and the changes of covered ice and conductor stress are analyzed under different radius of ice breaking wheels, different thickness of ice cover and different loading force, respectively.The results show that compressive stress and bending stress grow with an increase of loading force.Within the range of calculated parameters, both of them exceed the crushing strength of covered ice, however, the conductor stress is under the crushing strength, proving that this bending-based deicing method is feasible.On the other hand, it also proves that the increase in the radius of ice breaking wheels and the increase in the ice thickness are not preferred.The derived formula of bending stress of ice covering conductors can provide a reference for the design of deicing equipment.To ensure effective deicing, an appropriate additional loading force can help achieve the desired deicing result.

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备注/Memo

备注/Memo:
收稿日期:2017-08-22; 修回日期:2017-10-13 基金项目:电网环境保护国家重点实验室开放基金项目(GYW51201700590)资助 作者简介:孟遂民(1957-),男,教授,硕导。主要从事输电线路工程技术研究。Email: msm@ctgu.edu.cn
更新日期/Last Update: 2019-02-20