Simulation of Ice-shedding of UHV Long Span Transmission Line with Carbon Fiber Composite Conductor

被引：0
|
作者：
Hu Y. [1 ]
Wang L. [1 ]
Yin F. [1 ]
机构：
[1] Guangdong Engineering Technology Research Centre of Power Equipment Reliability in Complicated Coastal Environments, Shenzhen International Graduate School, Tsinghua University, Shenzhen
来源：
Gaodianya Jishu/High Voltage Engineering | 2023年 / 49卷 / 05期
基金：
中国国家自然科学基金;
关键词：
carbon fiber composite conductor; ice-shedding; interphase clearance; long-span; UHV; unbalanced tension;
D O I：
10.13336/j.1003-6520.hve.20220182
中图分类号：
学科分类号：
摘要：
When the long-distance transmission project crosses the Yangtze River and Yellow River, it is necessary to set up ultra-high voltage (UHV) long-span overhead transmission lines in this region. Due to the long span and large unbalanced tension, there are some safety hazards in the ice-shedding condition of transmission lines, and the application of carbon fiber composite conductor (CFCC) which has the advantages of lightweight and high strength is expected to reduce the operation risk. In this paper, based on the ice-shedding condition of the conductor, by using the 3-DOF nonlinear simulation platform independently developed by Tsinghua University, the simulation calculation of 1000 kV UHV long-span transmission line with the same type of CFCC and steel core aluminum alloy conductor is carried out. The results show that, by using CFCC, the sag of the UHV long-span transmission line can be reduced and the unbalance tension can be reduced to 50% of the original. Moreover, the stress on the insulator can also be reduced. Although the minimum interphase clearance becomes smaller, it can be kept above 7 m to meet the safety requirements by installing suppression measures. Therefore, the application of CFCC in the UHV long-span transmission lines can improve its mechanical safety when ice-shedding occurs. © 2023 Science Press. All rights reserved.
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页码：1967 / 1974
页数：7
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