输电线路单导线覆冰形状对直流大电流融冰时间的影响

doi:10.19595/j.cnki.1000-6753.tces.230088

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (631 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract

In winter, transmission line icing has become one of the important causes of serious threats to the safety of power grids, and dozens of transmission line de-icing methods have been researched and developed through the continuous efforts of scholars. These transmission line de-icing methods can be divided into mechanical de-icing method, thermal melt-icing method and passive de-icing method, etc. according to their working principle, but DC high current melt-icing technology is still the preferred method of transmission line de-icing at this stage. In this paper, according to the actual operating conditions of the transmission line single wire icing shape in various parts of the wire, through LGJ-240/30, LGJ-300/50 and LGJ-400/35 three different wire types, the DC high current melt-icing time of single wire circular ice and wing-shaped ice is calculated and analyzed. Under the same wire type, the larger the melt-icing current density is, the shorter the melt-icing time of circular ice is. When the melt-icing current density increased from 1.5A/mm² to 3A/mm², the circular melt-icing time of the three types of wires was 21.78%, 22.13% and 22.55% of the original. In the case of the same the melt-icing current density, the larger the wire cross-section is, the shorter the wire circular ice melt-icing time is. When the wire type from LGJ-240/30 to LGJ-400/35, the latter in the three melt-icing current density circular ice melt-icing time were 70.73%, 72.26% and 73.25% of the former. It can be seen that the melt-icing current density has a greater effect on the circular ice melt-icing time than the wire type under the same ice-covered environment.
In addition, the variation pattern of melt-icing time with melt-icing current density and wire type for wing-shaped ice is consistent with that for circular ice. However, numerically, the melt-icing time of wing-shaped ice is much smaller than that of circular ice. Define β as the ratio of transmission line wing-shaped ice melt-icing time to circular ice melt-icing time. From the results it can be seen that the maximum value of β is 11.55%, the minimum value is 9.27%, and the average value is 10.49%. The melt-icing time of single wire wing-shaped ice is about 10% of the circular ice. In the case of the same wire type, β increases with the increase of melt-icing current density. Taking melt-icing current density of 1.5A/mm² as a benchmark, LGJ-240/35 wire in the melt-icing current of 2A/mm² when the growth ratio is the largest, 8.52%. In the case of the same melt-icing current density, β becomes larger with larger wire cross-section, with LGJ-240/35 wire as the benchmark, LGJ-300/50 wire in the melt-icing current of 2A/mm² the largest proportion of growth, 12.41%.
Finally, experiments on DC high-current melt-icing were conducted on two types of single wires, LGJ-300/50 and LGJ-400/35, at Xuefeng Mountain Energy Equipment Safety National Observation and Research Station of Chongqing University. Experimental results show that LGJ-300/50 wire wing-shaped ice melt-icing time for circular ice melt-icing time of 10.6%, and LGJ-400/35 wire wing-shaped ice melt-icing time for circular ice melt-icing time of 8.3%. Based on this, this paper proposes to inhibit the formation of circular ice wire to promote the growth of its wing-shaped ice can reduce the DC high current melt-icing time to reduce the energy consumption of melt-icing.

Key words： Transmission line circular ice wing ice melt-icing time DC high current

Received: 18 January 2023

PACS:

TM85

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Yang Guolin
	Jiang Xingliang
	Wang Maozheng
	Hu Jianlin
	Zhang Zhijin

Cite this article:

Yang Guolin,Jiang Xingliang,Wang Maozheng等. The Influence of Ice Shape on DC High Current Melt-Icing Time of Transmission Line[J]. Transactions of China Electrotechnical Society, 0, (): 9013-13.

URL:

https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.230088 OR https://dgjsxb.ces-transaction.com/EN/Y0/V/I/9013

[1] 蒋兴良, 易辉. 输电线路覆冰及防护[M]. 北京: 中国电力出版社, 2002.
[2] 张晓辉, 李阳, 钟嘉庆, 等. 基于安全因子及协同因子的源网多目标协调规划[J]. 电工技术学报, 2021, 36(9): 1842-1856.
Zhang Xiaohui, Li Yang, Zhong Jiaqing, et al.Multi-objective coordinated planning of source network based on safety factor and coordination factor[J]. Transactions of China Electrotechnical Society, 2021, 36(9): 1842-1856.
[3] 卢志刚, 李丹, 吕雪姣, 等. 含分布式电源的冰灾下配电网多故障抢修策略[J]. 电工技术学报, 2018, 33(2): 423-432.
Lu Zhigang, Li Dan, Lü Xuejiao, et al.Multiple faults repair strategy under ice storm for distribution network with distributed generators[J]. Transactions of China Electrotechnical Society, 2018, 33(2): 423-432.
[4] 蒋兴良, 张志劲, 胡琴, 等. 再次面临电网冰雪灾害的反思与思考[J]. 高电压技术, 2018, 44(2): 463-469.
Jiang Xingliang, Zhang Zhijin, Hu Qin, et al.Thinkings on the restrike of ice and snow disaster to the power grid[J]. High Voltage Engineering, 2018, 44(2): 463-469.
[5] Lenhard R W Jr. An indirect method for estimating the weight of glaze on wires[J]. Bulletin of the American Meteorological Society, 1955, 36(1): 1-5.
[6] Kálmán T, Farzaneh M, McClure G. Numerical analysis of the dynamic effects of shock-load-induced ice shedding on overhead ground wires[J]. Computers & Structures, 2007, 85(7/8): 375-384.
[7] Kalman T.Dynamic behavior of iced cables subjected to mechanical shocks[D].Chicoutimi:Université du Québec à Chicoutimi,2007.
[8] Leblond A,Lamarche B,Bouchard D,et al.Development of a portable de-icing device for overhead ground wires[C]// Proceedings of the 11th International Workshop on Atmospheric Icing of Structures, 11th International Workshop on Atmospheric Icing of Structures,Montreal,Canada, 2005:399-404.
[9] 胡琴, 姜涛, 蒋兴良, 等. 地线电磁脉冲除冰系统的振动加速度试验研究[J]. 电网技术, 2022, 46(11): 4541-4548.
Hu Qin, Jiang Tao, Jiang Xingliang, et al.Experimental study on vibration acceleration of ground electromagnetic pulse deicing system[J]. Power System Technology, 2022, 46(11): 4541-4548.
[10] 张志劲, 杨晟欢, 蒋兴良, 等. 电力设备热水除冰过程水射流特性[J]. 高电压技术, 2021, 47(3): 1012-1019.
Zhang Zhijin, Yang Shenghuan, Jiang Xingliang, et al.Characteristics of water jet in Hot water deicing Process of Power Equipment[J]. High Voltage Engineering, 2021, 47(3): 1012-1019
[11] 蒋兴良, 毕聪来, 王涵, 等. 倒T型布置对绝缘子串覆冰及其交流闪络特性的影响[J].电工技术学报, 2019, 34(17): 3713-3720.
Jiang Xingliang, Bi Conglai, Wang Han, et al.Effect of inverted T arrangement on icing and AC flashover characteristics of insulator string[J]. Transactions of China Electrotechnical Society, 2019, 34(17): 3713-3720.
[12] 黄亚飞, 蒋兴良, 任晓东, 等. 采用涡流自热环防止输电线路冰雪灾害的方法研究[J].电工技术学报, 2021, 36(10): 2169-2177.
Huang Yafei, Jiang Xingliang, Ren Xiaodong, et al.Research on prevention of snow and ice disaster of transmission lines by eddy current self-heating ring[J]. Transactions of China Electrotechnical Society,2021,36(10):2169-2177
[13] 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, Yang Zhongyi, Ren Xiaodong.Anti-icing method using expanded wire instead of split wire[J]. Transactions of China Electrotechnical Society, 2020, 35(11): 2469-2477.
[14] 韩兴波, 吴海涛, 郭思华, 等. 用于覆冰环境测量的旋转多导体直径选择方法研究[J].电工技术学报, 2022, 37(15): 3973-3980.
Han Xingbo, Wu Haitao, Guo Sihua, et al.Research on Diameter selection method of rotating multi-conductor for Measurement of Icy Environment[J]. Transactions of China Electrotechnical Society,2022,37(15):3973-3980.
[15] 夏正春. 特高压输电线的覆冰舞动及脱冰跳跃研究[D]. 武汉:华中科技大学,2008.
Xia Zhengchun.Research on galloping and ice-shedding of ul-tra-high-voltage transmission conductors[D]. Wuhan, China: Huazhong University of science and technology, 2008.
[16] Meng X, Wang L, Hou L, et al.Dynamic characteristic of ice-shedding on UHV overhead transmission lines[J]. Cold Regions Science and Technology, 2011, 66(1): 44-52.
[17] 张迅, 曾华荣, 田承越, 等. 大气压等离子体制备超疏水表面及其防冰抑霜研究[J].电工技术学报,2019,34(24):5289-5296.
Zhang Xun, Zeng Huarong, Tian Chengyue, et al.Study on preparation of superhydrophobic surface by atmospheric pressure plasma and its anti-icing and anti-frost[J]. Transactions of China Electrotechnical Society,2019,34(24):5289-5296.
[18] 蒋兴良, 孙才新, 顾乐观, 等. 三峡地区导线覆冰的特性及雾凇覆冰模型[J]. 重庆大学学报(自然科学版), 1998, 21(2): 18-21.
Jiang Xingliang, Sun Caixin, Gu Leguan, et al.Characteristics of traverse ice coating and Rime ice coating model in Three Gorges Area[J]. Journal of Chongqing University (Natural Science Edition), 1998, 21(02): 18-21.
[19] 庄文兵, 祁创, 熊小伏, 于龙, 等. 计及气象因素时间累积效应的输电线路覆冰预测[J].电力系统保护与控制,2019, 47(17): 6-13.
Zhuang Wenbing, Qi Chuang, Xiong Xiaofu, et al.Icing prediction of transmission lines considering the time Cumulative Effect of meteorological Factors[J]. Power System Protection and Control, 2019, 47(17): 6-13
[20] 庄文兵, 祁创, 王建, 等. 基于微气象监测的输电线路覆冰动态过程估计模型[J].电力系统保护与控制, 2019, 47(14): 87-94.
Zhuang Wenbing, Qi Chuang, Wang Jian, et al.Based on meteorological monitoring transmission lines ice dynamic process estimation model[J]. Power System Protection and Control, 2019, 47(14) : 87-94.
[21] 桂重. 基于输电线路临域微地形因子的覆冰厚度预测模型研究[J].电工技术, 2022(15): 140-142.
Gui Zhong.Research on Ice Cover thickness prediction model based on microtopographic factor in adjacent region of transmission lines[J]. China Electrical Engineering, 2022(15):140-142.
[22] 胡京, 邓颖, 蒋兴良, 等. 输电线路覆冰垭口微地形的特征提取与识别方法[J]. 中国电力, 2022, 55(8): 135-142.
Hu Jing, Deng Ying, Jiang Xingliang, Zeng Yunrui.Feature extraction and recognition method of microterrain in transmission line ice pass[J]. Electric Power of China,2022,55(08):135-142.
[23] 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 Yanbao, Wei Fa-Fei, Wang Bin, et al.Effectiveness analysis and improvement of equivalent ice thickness calculation model for transmission lines under special terrain[J]. Power System Technology, 202, 46(7):2786-2793.
[24] 何青, 李军辉, 邓梦妍, 等.架空输电导线覆冰冻结系数计算及其影响因素分析[J].电工技术学报,2019,34(19):4162-4169.
He Qing, Li Junhui, Deng Mengyan, et al.Calculation of Freezing Coefficient of Overhead Transmission Wire and Its Influencing Factors[J]. Transactions of China Electrotechnical Society,2019,34(19):4162-4169.
[25] 黄新波, 高华, 朱永灿, 等. 输电导线粗糙覆冰表面对流换热特性[J].高电压技术,2018,44(11):3509-3516.
Huang Xinbo, Gao Hua, Zhu Yongcan, et al.Characteristics of Convective Heat Transfer on Rough Ice-covered Surface of Transmission Wire[J]. High Volt-age Engineering,2018,44(11):3509-3516.
[26] 蒋兴良,姜方义,汪泉霖. 基于最优时间步长模型的输电导线雾凇覆冰预测[J].电工技术学报,2018,33(18),4409-4418.
Jiang Xingliang, Jiang Fangyi, Wang Quanlin, et al.Prediction of rime accretion on transmission line based on optimal time step model[J]. Transactions of China Electrotechnical Society, 2018, 33(18): 4408-4418.
[27] Zhang Jian, Makkonen L, He Qing.A 2D numerical study on the effect of conductor shape on icing collision efficiency[J]. Cold Regions Science and Technology, 2017, 143: 52-58.
[28] 蒋兴良, 侯乐东, 韩兴波, 等. 输电线路导线覆冰扭转特性的数值模拟[J].电工技术学报, 2020, 35(8): 1818-1826.
Jiang Xingliang, Hou Ledong, Han Xingbo, et al.Numerical simulation of ice torsional characteristics of transmission line conductors[J]. Transactions of China Electrotechnical Society, 2020, 35(8): 1818-1826.
[29] 韩兴波, 吴海涛, 郭思华, 等. 输电线路单导线覆冰和扭转的相互影响机制分析[J].电工技术学报, 2022, 37(17): 4508-4516.
Han Xingbo, Wu Haitao, Guo Sihua, et al.Analysis on the Interaction Mechanism of single conductor Icing and Torsion in Transmission Line[J]. Transactions of China Electrotechnical Society, 2022, 37(17): 4508-4516.
[30] 蒋兴良, 范松海, 胡建林, 等. 输电线路直流短路融冰的临界电流分析[J].中国电机工程学报, 2010, 30(1): 111-116.
Jiang Xingliang, Fan Songhai, Hu Jianlin, et al.Critical current analysis of DC short-circuit ice melting in transmission lines[J]. Proceedings of the CSEE, 2010, 30(1): 111-116.
[31] Nigol O, Buchan P. Conductor galloping-part Ⅱ torsional mechanism[J]. IEEE Transactions on Power Apparatus and Systems, 1981, PAS-100(2): 708-720.