基于遮蔽效应分析的分裂导线覆冰特性及快速计算方法

doi:10.19595/j.cnki.1000-6753.tces.240609

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1964 KB)
输出: BibTeX | EndNote (RIS)

摘要

冬季架空输电线覆冰是电力系统安全稳定运行的重大威胁。对于分裂导线而言,由于上风侧导线对下风侧导线的遮蔽效应的影响,导致其覆冰特性将出现较大差异,而现有研究缺乏对分裂子导线间覆冰遮蔽效应的定量研究。针对上述问题,该文首先通过数值仿真方法对分裂导线覆冰特性进行研究。采用欧拉模型求解分裂导线覆冰过程中的气-液两相流场分布特性,基于控制体思想及水滴冻结质量平衡与热力学平衡方程,获取了不同覆冰环境下分裂导线的覆冰质量与形貌。随后通过遮蔽角与遮蔽系数的定义分析了分裂子导线间的覆冰遮蔽效应及其影响因素。结果表明：分裂导线上、下风侧子导线覆冰强度之差与子导线间遮蔽效应的强度呈正相关,遮蔽角绝对值和分裂间距的增加会导致遮蔽效应减弱乃至消失;液滴中值体积直径的增加将加剧遮蔽效应;在5~20 m/s的风速范围内,遮蔽效应先加强后减弱,风速为15 m/s时遮蔽效应最强烈。最后,基于遮蔽效应分析,提出了针对不同分裂形式分裂导线的覆冰量快速计算方法,并通过分裂导线自然环境覆冰观测试验对快速计算方法的准确性进行了验证。该文研究结果可为架空输电线路防覆冰设计与运维提供理论指导。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	黄亚飞
	陈阳宁
	杨鑫
	蒋兴良
	范才进

关键词 ：架空输电线路, 覆冰, 分裂导线, 数值模拟, 自然覆冰试验

Abstract：

For bundled conductors, the shadowing effect of upwind sub-conductor will affect the airflow and droplets distributions of downwind one, resulting in the difference in icing characteristics. Traditional icing calculation process generally ignored these differences and, hence, only giving an identical icing mass result of each sub-conductor. This affects the study of the aerodynamic characteristics and deicing methods of icing bundled conductor. Although some scholars have pointed out that the shadowing effect between sub-conductors will influence the icing process, there is no quantitative study. Therefore, this paper further explores the shadowing effect and relevant influencing factors of bundled conductors through numerical simulation and test research. Furthermore, based on the analysis of the shadowing effect and the superposition principle, a rapid calculation method of ice mass accreted on the bundled conductor is proposed.
Firstly, the distributions of airflow and droplets around bundled conductor are solved by Eulerian-Eulerian two-phase flow model. Secondly, combined with the mass and thermodynamic balance equations, the icing mass and shape accreted on bundled conductor under various icing environments are obtained. Then a new parameter called shadowing coefficient is defined to investigate the shadowing effect and influencing factors as well. The results show that: Shadowing effect is weakened with increasing absolute value of shadowing angle and bundled-spacing, but intensified with the increase of median volume diameter(M_VD) of droplets; Meanwhile, the shadowing effect experiences a growth and then drops down along with the increase of wind speed, and reach to the max at 15m/s range 5-20m/s.
Based on the superposition principle and shadowing effect analysis, a rapid calculating method for ice mass on bundled conductor is proposed. Where iced bundled conductor is regarded as a linear combination of non-shadowed sub-conductor (single conductor) icing intensity and shadowing coefficient, so the icing intensity of various types of bundled conductor can be obtained only requiring the icing intensity of single conductor and the shadowing coefficient in the corresponding environment. Then the rapid icing calculation formulars of 3,4,6,8-bundled conductor under various shadowing angle is given by geometry analysis, respectively, which simplifies the calculation of the icing mass on bundled conductor.
Finaly, a 4-bundled conductor nature icing test was carried out at the Xuefeng Mountain Energy Equipment Safety National Observation and Research Station to validate the accuracy of the numerical simulation and rapid calculation method. Results show that under the environment parameters of ambit temperature T = -2℃, M_VD = 25.4 μm, liquid water content L_WC = 0.61 g/m³, wind speed V = 10 m/s and shadowing angle θ = 2°, the difference in icing intensity between rapid calculation and test results was within -4.01% to -19.77%, the icing thickness differences of sub-conductors were between 1.66% to -6.36% and the differences in shadowing coefficient were between 4.05% to 5.33%, which well verifies the accuracy of the rapid calculation method proposed in this paper.

Key words： Transmission line icing bundled conductor numerical simulation nature icing test

收稿日期: 2024-04-22

PACS:

TM85

基金资助:

国家自然科学基金项目（U23B20121, 52177015, 52307158）和湖南省教育厅科研项目（22C0157）资助

通讯作者: 杨鑫男,1983年生,教授,博士生导师,研究方向为低温高压绝缘技术、过电压及其防治技术、多场耦合的相关计算等。E-mail：yan_19830713@163.com

作者简介: 黄亚飞男,1994年生,博士,讲师,研究方向为复杂大气环境下输电线路外绝缘及防护。E-mail：huang_yafei@foxmail.com

引用本文:

黄亚飞, 陈阳宁, 杨鑫, 蒋兴良, 范才进. 基于遮蔽效应分析的分裂导线覆冰特性及快速计算方法[J]. 电工技术学报, 0, (): 2492936-2492936. Huang Yafei, Chen Yangning, Yang Xin, Jiang Xingliang, Fan Caijin. Study on Icing Characteristics and Rapid Calculating Method of Bundled Conductor of Transmission Line. Transactions of China Electrotechnical Society, 0, (): 2492936-2492936.

链接本文:

https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.240609 https://dgjsxb.ces-transaction.com/CN/Y0/V/I/2492936

[1] 曾伟, 蒋兴良, 杨国林, 等. 基于记忆合金双程形状记忆效应的导线雾凇防冰方法及现场试验[J]. 电工技术学报, 2024, 39(7): 2174-2183.
Zeng Wei, Jiang Xingliang, Yang Guolin, et al.Research on anti-icing method for fog freezing and field test of wires based on two-way shape memory effect of memory alloy[J]. Transactions of China Electrotechnical Society, 2024, 39(7): 2174-2183.
[2] Li Bo, Bai Jie, He Jinhang, et al.A review on superhydrophobic surface with anti-icing properties in overhead transmission lines[J]. Coatings, 2023, 13(2): 301.
[3] 杨国林, 蒋兴良, 王茂政, 等. 输电线路单导线覆冰形状对直流大电流融冰时间的影响[J]. 电工技术学报, 2024, 39(9): 2916-2924.
Yang Guolin, Jiang Xingliang, Wang Maozheng, et al.The impact of ice accumulation shape on the DC high current ice-melting time for a single conductor on power transmission line[J]. Transactions of China Electrotechnical Society, 2024, 39(9): 2916-2924.
[4] Zhu He, Tang Wenpeng, Zhang Renqi, et al.Dynamic response analysis of asynchronous deicing of quad bundle conductor spacer system during DC ice melting[J]. IEEE Access, 2022, 10: 118072-118081.
[5] Makkonen L.Modeling of ice accretion on wires[J]. Journal of Climate and Applied Meteorology, 1984, 23(6): 929-939.
[6] 郭昊, 刘沛清, 屈秋林, 等. 输电线雾凇覆冰的工程估算方法[J]. 高电压技术, 2011, 37(4): 1041-1049.
Guo Hao, Liu Peiqing, Qu Qiulin, et al.Estimation engineering method of rime accretion process on transmission lines[J]. High Voltage Engineering, 2011, 37(4): 1041-1049.
[7] 梁曦东, 李雨佳, 张轶博, 等. 输电导线的覆冰时变仿真模型[J]. 高电压技术, 2014, 40(2): 336-343.
Liang Xidong, Li Yujia, Zhang Yibo, et al.Time-dependent simulation model of ice accretion on transmission line[J]. High Voltage Engineering, 2014, 40(2): 336-343.
[8] 郝艳捧, 魏发生, 王斌, 等. 特殊地形下输电线路等值覆冰厚度计算模型有效性分析和改进研究[J]. 电网技术, 2022, 46(7): 2786-2793.
Hao Yanpeng, Wei Fasheng, Wang Bin, et al.Research on validity analysis and improvement of calculation model of equivalent icing thickness of transmission lines under special terrain[J]. Power System Technology, 2022, 46(7): 2786-2793.
[9] 杨国林, 蒋兴良, 廖乙, 等. 输电线路单导线自由扭转覆冰动态仿真研究[J/OL]. 电工技术学报, 2023: 1-11[2024-04-20]. https://doi.org/10.19595/j.cnki.1000-6753.tces.230244.
Yang Guolin, Jiang Xingliang, Liao Yi, et al. Simulation study of the free torsional icing on single conductors of transmission lines[J/OL]. Transactions of China Electrotechnical Society, 2023: 1-11[2024-04-20]. https://doi.org/10.19595/j.cnki.1000-6753.tces.230244.
[10] 刘国特, 郝艳捧, 阳林, 等. 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, et al.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.
[11] Veerakumar R, Hu Haiyang, Tian Linchuan, et al.An experimental study of rime ice accretion on bundled conductors[J]. Experimental Thermal and Fluid Science, 2023, 147: 110962.
[12] 何青, 李军辉, 张暕, 等. 分裂导线覆冰的数值分析与实验研究[J]. 中南大学学报(自然科学版), 2019, 50(6): 1485-1491.
He Qing, Li Junhui, Zhang Jian, et al.Numerical analysis and experiment of icing condition of bundled conductors[J]. Journal of Central South University (Science and Technology), 2019, 50(6): 1485-1491.
[13] 吴海涛, 韩兴波, 蒋兴良, 等. 基于水滴碰冻效率的扩径导线防冰特性分析[J]. 电工技术学报, 2023, 38(11): 3033-3040, 3051.
Wu Haitao, Han Xingbo, Jiang Xingliang, et al.Analysis of anti-icing characteristics of expanded diameter conductor based on water droplet collision and freezing efficiency[J]. Transactions of China Electrotechnical Society, 2023, 38(11): 3033-3040, 3051.
[14] 毕聪来, 蒋兴良, 韩兴波, 等. 采用扩径导线替代分裂导线的防冰方法[J]. 电工技术学报, 2020, 35(11): 2469-2477.
Bi Conglai, Jiang Xingliang, Han Xingbo, et al.Anti-icing method of using expanded diameter conductor to replace bundle conductor[J]. Transactions of China Electrotechnical Society, 2020, 35(11): 2469-2477.
[15] 蔡萌琦, 周林抒, 严波, 等. 覆冰四分裂导线动态气动系数风洞试验[J]. 实验力学, 2020, 35(2): 267-275.
Cai Mengqi, Zhou Linshu, Yan Bo, et al.Wind tunnel tests on dynamic aerodynamic coefficients of iced quad bundle conductors[J]. Journal of Experimental Mechanics, 2020, 35(2): 267-275.
[16] Mou Zheyue, Yan Bo, Yang Hanxu, et al.Prediction model for aerodynamic coefficients of iced quad bundle conductors based on machine learning method[J]. Royal Society Open Science, 2021, 8(10): 210568.
[17] 巢亚锋. 分裂导线和多串并联绝缘子覆冰模型与影响因素的研究[D]. 重庆: 重庆大学, 2011.
Chao Yafeng.Study on the model and impact factors of boundled conductors and parallel composite insulator strings icing[D]. Chongqing: Chongqing University, 2011.
[18] Huang Yafei, Jiang Xingliang, Virk M S.Ice accretion study of FXBW4-220 transmission line composite insulators and anti-icing geometry optimization[J]. Electric Power Systems Research, 2021, 194: 107089.
[19] Han Xingbo, Wang Jie, Xing Bin, et al.Collision characteristics of water droplets in icing process of insulators[J]. Electric Power Systems Research, 2022, 212: 108663.
[20] 黄亚飞, 蒋兴良, 杨国林, 等. 不同配置形式倒T型布置绝缘子串直流冰闪特性研究[J]. 电工技术学报, 2021, 36(24): 5294-5303.
Huang Yafei, Jiang Xingliang, Yang Guolin, et al.DC flashover characteristics of the iced-covered inverted T-type insulator strings with different configuration[J]. Transactions of China Electrotechnical Society, 2021, 36(24): 5294-5303.
[21] Han Xingbo, Jian Xingliang, Dong Shaojiang, et al.Analysis of the growth conditions of icicles during insulator icing[J]. Electric Power Systems Research, 2021, 201: 107512.
[22] Fu Ping, Farzaneh M, Bouchard G.Two-dimensional modelling of the ice accretion process on transmission line wires and conductors[J]. Cold Regions Science and Technology, 2006, 46(2): 132-146.
[23] Macklin W C.The density and structure of ice formed by accretion[J]. Quarterly Journal of the Royal Meteorological Society, 1962, 88(375): 30-50.
[24] 蒋兴良, 周文轩, 董莉娜, 等. 基于旋转圆柱三电极阵列的覆冰测量方法[J]. 电工技术学报, 2024, 39(5): 1524-1535.
Jiang Xingliang, Zhou Wenxuan, Dong Lina, et al.Research on icing measurement method based on rotating cylindrical three-electrode array[J]. Transactions of China Electrotechnical Society, 2024, 39(5): 1524-1535.