基于等效直径的复合绝缘子覆冰特性与结构参数分析

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摘要复合绝缘子伞型结构是影响其覆冰的重要因素,优化其结构参数可以减少覆冰量。对复合绝缘子外部流场数学模型进行简化,利用Fluent软件仿真计算其沿绝缘距离方向上各部位的水滴碰撞率,并在此基础上提出复合绝缘子覆冰等效直径D_eq的概念。理论分析和自然覆冰试验均表明:在同等覆冰条件下,D_eq越大的复合绝缘子,覆冰量也越大。因此,将D_eq作为表征复合绝缘子覆冰特性的特征参数,研究了杆径、伞间距、伞倾角和伞径对D_eq的影响,结果表明D_eq随杆径和伞间距的增大而增大,随伞倾角和伞径的增大而减小。最后结合分析结果与覆冰试验,给出覆冰地区复合绝缘子结构参数优化设计建议。

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	蒋兴良
	潘杨
	汪泉霖
	胡玉耀

关键词 ：复合绝缘子, 结构参数, 水滴碰撞率, 等效直径, 覆冰试验, 结构优化

Abstract：The shed structure of composite insulator has much influence on its icing characteristic.Optimizing its structural parameter can reduce the ice amount.This paper simplifies the fluid field mathematical model of composite insulators and calculate the water droplet collision coefficient along the insulation distance direction by Fluent simulation software. Based on this, this paper put forward the concept of icing equivalent diameter of composite insulator D_eq.Theoretical analysis and icing test results show that under the same condition, the bigger D_eq of the composite insulator, the greater the amount of ice also. Therefore, this paper uses D_eq as the characteristic parameter and studies the relationship between structural parameters and D_eq. The results are as follow: D_eq increases with increasing of rod diameter and shed distance, but decreases with increasing of shed inclination and shed diameter. Considering the results of analysis and icing test, suggestions for optimizing the structure of composite insulators′sheds to be used in icing areas are given below: decrease the rod diameter, increase the shed inclination and shed diameter properly on condition of material stiffness allows and manufacturing cost is acceptable; increase the shed distance properly and there can be some small sheds between adjacent large sheds.

Key words： Composite insulator structural parameter water droplet collision coefficient equivalent diameter icing test structure optimization

收稿日期: 2016-01-06 出版日期: 2017-04-17

PACS:

TM852

基金资助:国家创新研究群体基金资助项目(51321063)。

通讯作者: 潘杨男,1990年生,硕士研究生,研究方向为输电线路覆冰及防护。E-mail:20094321@cqu.edu.cn

作者简介: 蒋兴良男,1961年生,教授,博士生导师,研究方向为高电压与绝缘技术、输电线路覆冰及防护。E-mail:xljiang@cqu.edu.cn

引用本文:

蒋兴良,潘杨,汪泉霖,胡玉耀. 基于等效直径的复合绝缘子覆冰特性与结构参数分析[J]. 电工技术学报, 2017, 32(7): 190-196. Jiang Xingliang,Pan Yang,Wang Quanlin,Hu Yuyao. Research on Icing Characteristics of Composite Insulator and Structural Parameter Analysis Based on Equivalent Diameter. Transactions of China Electrotechnical Society, 2017, 32(7): 190-196.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2017/V32/I7/190

[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,2001.
[2] 蒋兴良,舒立春,孙才新.电力系统污秽与覆冰绝缘[M].北京:中国电力出版社,2009.
[3] 李庆峰,范峥,吴穹,等.全国输电线路覆冰情况调研及事故分析[J].电网技术,2008,32(9):33-36.
Li Qingfeng,Fan Zheng,Wu Qiong,et al.Investigation of ice-covered transmission lines and analysis on transmission line failures caused by ice-coating in China[J].Power System Technology,2008,32(9):33-36.
[4] 刘泽洪.复合绝缘子使用现状及其在特高压输电线路中的应用前景[J].电网技术,2006,30(12):1-7.
Liu Zehong.Present situation and prospects of applying composite insulators to UHF transmission lines in China[J].Power System Technology,2006,30(12):l-7.
[5] 宿志一,范建斌.复合绝缘子用于高压及特高压直流输电线路的可靠性研究[J].电网技术,2006,30(12):16-23.
Su Zhiyi,Fan Jianbin.Research on reliability of composite insulators used in EHV and UHV DC transmission lines[J].Power System Technology,2006,30(12):16-23.
[6] Li Peng,Fan Jianbin,Li Wufeng,et al.Flashover performance of HVDC iced insulator strings[J].IEEE Transactions on Dielectric Electrical Insulation,2007,14(6):1334-1338.
[7] 李兴旺,解秀余,胡建林,等.伞裙结构对110 kV复合绝缘子交流覆冰特性影响[J].陕西电力,2009,12(9):19-23.
Li Xingwang,Xie Xiuyu,Hu Jianlin,et al.Probe into effect of umbrella-shaped structure on AC icing performance of 110 kV composite insulator strings[J].Shan′xi Electric Power,2009,12(9):19-23.
[8] 黄长学,蒋兴良,杜忠东,等.110 kV防冰闪型复合绝缘子的冰闪特性[J].高电压技术,2009,35(10):2540-2544.
Huang Changxue,Jiang Xingliang,Du Zhongdong,et al.Ice flashover characteristics of 110 kV anti-icing composite insulator[J].High Voltage Engineering,2009,35(10):2540-2544.
[9] 蒋兴良,董冰冰.110 kV复合绝缘子串交流冰闪特性的比较[J].中国电机工程学报,2012,32(31):128-133.
Jiang Xingliang,Dong Bingbing.Comparison of AC icing flash-over performances of 110 kV composite insulators [J].Proceedings of the CSEE,2012,32(31):128-133.
[10]丁京玲,党镇平,王婷婷.棒形悬式复合绝缘子伞型结构对覆冰闪络特性的影响[J].电瓷避雷器,2010,233(1):10-12,18.
Ding Jingling,Dang Zhenping,Wang Tingting.The affect of rod suspension composite insulator shed profilestructure on iced flashover characteristics[J].Insulators and Surge Arresters,2010,233(1):10-12,18.
[11]黎卫国.交流复合绝缘子覆冰电位电场仿真研究[D].广州:华南理工大学,2012.
[12]刘毓.基于电场分布特性的冰区35/110 kV复合绝缘子伞裙结构优化研究[D].重庆:重庆大学,2012.
[13]刘毓,蒋兴良,舒立春,等.复合绝缘子伞裙结构特征参数对其冰闪特性的影响[J].电工技术学报,2014,29(8):319-326.
Liu Yu,Jiang Xingliang,Shu Lichun,et al.Influence of characterizing shed configuration parameters of composite insulators on icing flashover performance[J].Transactions of China Electrotechnical Society,2014,29(8):319-326.
[14]温作铭.基于流体力学的覆冰地区用复合绝缘子伞裙结构研究[D].重庆:重庆大学,2007.
[15]蒋兴良,温作铭,孙才新.复合绝缘子表面水滴撞击特性的数值模拟与伞裙结构分析[J].中国电机工程学报,2008,28(19):7-12.
Jiang Xingliang,Wen Zuoming,Sun Caixin.Numerical simulation of water droplet impingement on composite insulator surface and analysis of shed configuration[J].Proceedings of the CSEE,2008,28(19):7-12.
[16]Ale-Emran S M.Design of Booster shed parameters for improving the electrical performance of post insulators under icing conditions[D].Canada:University of Québec,2013.
[17]张志劲,蒋兴良,胡建林,等.雪峰山自然环境试验站覆冰试验技术[J].高电压技术,2011,37(9):2308-2314.
Zhang Zhijin,Jiang Xingliang,Hu Jianlin,et al.Icing testing technology at Xuefeng Mountain Natural Test Station[J].High Voltage Engineering,2011,37(9):2308-2314.