直流电压下燃烧颗粒在间隙中的运动和分布规律

doi:10.19595/j.cnki.1000-6753.tces.191519

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摘要山火容易引发输电线路跳闸事故,现有研究表明,植被燃烧产生大量颗粒物,在火焰中荷电并在导线下方形成颗粒链,其畸变电场和触发放电是导致间隙击穿的关键因素。为分析直流正极性与负极性条件下空间电场畸变的差异,需要对燃烧颗粒在间隙中的运动和分布规律进行研究。为此,该文首先结合试验分析正、负极性直流电压下颗粒的运动特性;然后建立温度、流体、电场和颗粒运动的多物理场耦合仿真模型,仿真分析正、负极性电压下不同颗粒的受力特性和运动过程;最后结合燃烧颗粒特点分析颗粒分布规律。研究结果表明,随着颗粒粒径的增加,其被电极捕捉吸附的临界荷质比越小,粒径相对较大的颗粒容易被电极捕捉,而小颗粒易随热气流扩散和飞升。

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关键词 ：直流电压, 颗粒荷电, 多物理场, 颗粒运动

Abstract：Forest fires have caused frequent tripping accidents of transmission lines. A large number of particles are generated and charged in the vegetation fire. These particles are easily drifted into the flame gap under the transmission line. That the charged particles cause serious electric field distortion and triggering discharge are the key factors to cause the gap breakdown. In order to analyze the difference of flame space electric field distortion between positive and negative DC polarity, it is necessary to study the movement and distribution of combustion particles in the gap. Firstly, the motion characteristics of particles under positive and negative DC voltage are analyzed in this paper. Then, a multi-physical fields coupled simulation model of temperature, fluid, electric field and particle motion field is established to simulate and analyze the force characteristics and movement process of different particles under positive and negative polar voltage. Finally, the particles distribution is analyzed according to the characteristics of combustion particles. The results show that with the expansion of the particle size, the smaller the critical charge-mass ratio is, the larger the particle size is, and the smaller the particle size is, the easier it is to be captured by the electrode.

Key words： DC voltage particle charging multi-physical fields particle motion

收稿日期: 2019-11-20

PACS:

TM85

基金资助:国家自然基金青年基金资助项目(51607103)

通讯作者: 黎鹏男,1989年生,讲师,硕士生导师,研究方向为输变电设备外绝缘、高压电器、电工装备电磁多物理场分析。E-mail:lipeng19891102@126.com

作者简介: 普子恒男,1987年生,博士,副教授,研究方向为超特高压输电技术、高压电器设备绝缘试验技术。E-mail:pzhdq@ctgu.edu.cn

引用本文:

普子恒, 王子鸣, 史星涛, 孙睿康, 黎鹏. 直流电压下燃烧颗粒在间隙中的运动和分布规律[J]. 电工技术学报, 2020, 35(zk2): 612-619. Pu Ziheng, Wang Ziming, Shi Xingtao, Sun Ruikang, Li Peng. Motion and Distribution of Combustion Particles in Flame Gap under DC Voltage. Transactions of China Electrotechnical Society, 2020, 35(zk2): 612-619.

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[1] 黎鹏, 阮江军, 黄道春, 等. 模拟山火条件下导线-板间隙击穿特性影响因素分析[J]. 电工技术学报, 2018, 33(1): 195-201.
Li Peng, Ruan Jiangjun, Huang Daochun, et al.Influence factors analysis of the conductor-plane gap breakdown characteristic under simulation forest fire condition[J]. Transactions of China Electrotechnical Society, 2018, 33(1): 195-201.
[2] 吴田, 阮江军, 胡毅, 等. 500kV输电线路的山火击穿特性及机制研究[J]. 中国电机工程学报, 2011, 31(34): 163-170.
Wu Tian, Ruan Jiangjun, Hu Yi, et al.Study on fire induced breakdown of 500kV transmission line in terms of chatacteristics and mechanism[J]. Proceedings of the CSEE, 2011, 31(34): 163-170.
[3] 黄道春, 黎鹏, 阮江军, 等. 山火引发输电线路间隙放电机理与击穿特性综述[J]. 高电压技术, 2015, 41(2): 622-632.
Huang Daochun, Li Peng, Ruan Jiangjun, et al.Review on discharge mechanism and breakdown characteristics of transmission line gap under forest fire condition[J]. High Voltage Engineering, 2015, 41(2): 622-632.
[4] 周特军, 吴传平, 陈海翔, 等. 湖南电网输电线路山火跳闸时空分布规律[J]. 消防科学与技术, 2019, 38(3): 417-420.
Zhou Tejun, Wu Chuanping, Chen Haixiang, et al.Temporal and spatial distribution laws of transmission line trips caused by wild-fire for Hunan power grid[J]. Fire Science and Technology, 2019, 38(3): 417-420.
[5] 熊小伏, 曾勇, 王建, 等. 基于山火时空特征的林区输电通道风险评估[J]. 电力系统保护与控制, 2018, 46(4): 1-9.
Xiong Xiaofu, Zeng Yong, Wang Jian, et al.Risk assessment of power transmission channels in forest regions based on spatial-temporal features of forest fire[J]. Power System Protection and Control, 2018, 46(4): 1-9.
[6] Mphale K M, Heron M, Ketlhwaafetse R, et al.Interferometric measur ement of ionization in a grassfire[J]. Meteorology and Atmospheric Physics, 2010, 106(2-3): 191-203.
[7] Kago E M, Mphale K, Douglas L, et al.Measurement of breakdown electric field strength for vegetation and hydrocarbon flames[J]. Journal of Electromagnetic Analysis and Applications, 2018, 10(3): 53-66.
[8] 吴田, 胡毅, 阮江军, 等. 交流输电线路模型在山火条件下的击穿机理[J]. 高电压技术, 2011, 37(5): 1115-1122.
Wu Tian, Hu Yi, Ruan Jiangjun, et al.Air gap breakdown mechanism of model AC transmission line under forest fires[J]. High Voltage Engineering, 2011, 37(5): 1115-1122.
[9] 黎鹏, 黄道春, 阮江军, 等. 全火焰条件下植被燃烧特征量对导线-板间隙击穿特性的影响[J]. 电网技术, 2016, 40(10): 3250-3257.
Li Peng, Huang Daochun, Ruan Jiangjun, et al.Influence of vegetation combustion features on breakdown characteristics of conductor-plane gap under full flame condition[J]. Power System Technology, 2016, 40(10): 3250-3257.
[10] 普子恒, 阮江军, 黄道春, 等. 火焰条件下间隙的直流电压击穿特性研究[J]. 中国电机工程学报, 2014, 34(3): 453-459.
Pu Ziheng, Ruan Jiangjun, Huang Daochun, et al.Study on DC voltage breakdown characteristics of gap under fire conditions[J]. Proceedings of the CSEE, 2014, 34(3): 453-459.
[11] 黄道春, 卢威, 姚涛, 等. 植被火条件下导线-板短空气间隙泄漏电流特性研究[J]. 电工技术学报, 2019, 34(16): 3487-3493.
Huang Daochun, Lu Wei, Yao Tao, et al.Study on leakage current characteristics of wire-plate short air gap under vegetation fire conditions[J]. Transactions of China Electrotechnical Society, 2019, 34(16): 3487-3493.
[12] 黎鹏, 阮江军, 黄道春, 等. 典型植被火焰下导线-板间隙击穿特性及放电模型研究[J]. 中国电机工程学报, 2016, 36(14): 4001-4011.
Li Peng, Ruan Jiangjun, Huang Daochun, et al.Study on breakdown characteristic and discharge model of conductor-plane gap under typical vegetation flame[J]. Proceedings of the CSEE, 2016, 36(14): 4001-4011.
[13] 龙明洋, 黄道春, 黎鹏, 等. 典型植被灰烬颗粒对导线-板间隙放电特性的影响[J]. 电工技术学报, 2018, 33(3): 627-633.
Long Mingyang, Huang Daochun, Li Peng, et al.Influence of the typical vegetation ashes/particles on the discharge characteristics of conductor-plane air gap[J]. Transactions of China Electrotechnical Society, 2018, 33(3): 627-633.
[14] 普子恒, 阮江军, 吴田, 等. 火焰中颗粒对间隙放电特性的影响[J]. 高电压技术, 2014, 40(1): 103-110.
Pu Ziheng, Ruan Jiangjun, Wu Tian, et al.Influence of particles in flame on the characteristics of gap discharge[J]. High Voltage Engineering, 2014, 40(1): 103-110.
[15] 陆家榆, 何堃, 马晓倩, 等. 空中颗粒物对直流电晕放电影响研究现状:颗粒物空间电荷效应[J]. 中国电机工程学报, 2015, 35(23): 6222-6234.
Lu Jiayu, He Kun, Ma Xiaoqian, et al.Current status of study on the effects of airborne particles on DC corona discharge: space-charge effect of particles[J]. Proceedings of the CSEE, 2015, 35(23): 6222-6234.
[16] 骆仲泱, 江建平, 赵磊, 等. 不同电场中细颗粒物的荷电特性研究[J]. 中国电机工程学报, 2014, 34(23): 3959-3969.
Luo Zhongyang, Jiang Jianping, Zhao Lei, et al.Research on the charging of fine particulate in different electric fields[J]. Proceedings of the CSEE, 2014, 34(23): 3959-3969.
[17] 危卫, 张力元, 顾兆林. 工业中粉体颗粒的荷电机理及数值模拟方法[J]. 物理学报, 2015, 64(16): 145-156.
Wei Wei, Zhang Liyuan, Gu Zhaolin, et al.Particle charging mechanism and numerical methodology for industrial applications[J]. Acta Physica Sinica, 2015, 64(16): 145-156.
[18] 邓鹤鸣, 何正浩, 马军, 等. 沙尘天气下大沙粒对放电发展的影响[J]. 高电压技术, 2010, 36(5): 1247-1252.
Deng Heming, He Zhenghao, Ma Jun, et al.Effect of large sand-dust particles on discharge development in sand dust weather[J]. High Voltage Engineering, 2010, 36(5): 1247-1252.
[19] 王宇. 电场作用下火焰中碳烟颗粒的分布与聚积规律[D]. 北京: 清华大学, 2009.
[20] 李艳. 高温静电除尘过程的数值模拟研究[D]. 杭州: 浙江大学, 2015.
[21] Luo Kun, Li Yan, Zheng Chenghang, et al.Numerical simulation of temperature effect on particles behavior via electrostatic precipitators[J]. Applied Thermal Engineering, 2015, 88: 127-139.
[22] 闫丽敏. 电场与小尺度火焰相互作用的实验研究及模拟分析[D]. 北京: 北京交通大学, 2012.