[1]武利会,陈道品,陈斯翔,等.输电线路杆塔与接地装置的雷击暂态响应建模分析[J].电瓷避雷器,2020,(01):129-135.[doi:10.16188/j.isa.1003-8337.2020.01.022]
 WU Lihui,CHEN Daopin,CHEN Sixiang,et al.Modeling and Analysis of Lightning Transient Response of Transmission Line Tower and Grounding Device[J].,2020,(01):129-135.[doi:10.16188/j.isa.1003-8337.2020.01.022]
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输电线路杆塔与接地装置的雷击暂态响应建模分析()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年01期
页码:
129-135
栏目:
避雷器
出版日期:
2020-02-20

文章信息/Info

Title:
Modeling and Analysis of Lightning Transient Response of Transmission Line Tower and Grounding Device
作者:
武利会 陈道品 陈斯翔 何子兰 陈邦发 黄 静
(广东电网有限责任公司佛山供电局, 广东 佛山 528000)
Author(s):
WU Lihui CHEN Daopin CHEN Sixiang HE Zilan CHEN Bangfa HUANG Jing
(Foshan Power Supply Bureau of Guangdong Power Grid Co., Ltd., Foshan 528000, China)
关键词:
雷击暂态响应 暂态分析模型 多波阻抗模型 火花效应 EMTP
Keywords:
lightning transient response transient analysis model multi-wave impedance model spark effect EMTP
DOI:
10.16188/j.isa.1003-8337.2020.01.022
摘要:
为准确分析输电杆塔的雷击暂态响应,以及雷电波在杆塔、线路中的折反射波过程,建立整体的分析模型显得尤为重要。针对典型110 kV输电线路,搭建了输电线路、输电杆塔以及接地装置的一体化暂态分析模型,将输电杆塔进行分块建模,建立其多波阻抗模型; 考虑典型接地装置的电感效应与火花效应,建立其暂态电路分析模型; 考虑绝缘子、输电线路、避雷线的影响,最终结合EMTP软件进行雷击暂态响应分析。结果表明考虑电感效应以及火花效应后的电路模型,可模拟接地装置的冲击特性; 输电杆塔横担电位峰值随高度的降低而减小; 杆塔与接地装置的阻抗不匹配、避雷线与杆塔的阻抗不匹配,导致横担、塔顶电位带有较大程度的振荡; 雷电波的反射时长与输电线路跨距相关。
Abstract:
In order to accurately analyze the lightning transient response of transmission tower, as well as the refraction and reflection process of lightning wave in tower and line, it is very important to establish an overall analysis model. For a typical 110 kV transmission line, an integrated transient analysis model of transmission line, transmission tower and grounding device is built. The transmission tower is modeled in blocks to establish its multi-wave impedance model. Considering the inductance effect and spark effect of typical grounding device, the transient circuit analysis model is established. The lightning transient response analysis is finally carried out with EMTP software inconsideration of the influence of insulator, transmission line and lightning conductor. The results show that the impact characteristics of grounding device can be simulated by considering the inductance effect and spark effect. The peak potential of transmission tower cross arm decreases with the decrease of height. Impedance mismatch between tower and grounding device, lightning rod and tower impedance mismatch, resulting in a greater degree of oscillation of horizontal arm and tower top potential; The reflection time of lightning wave is related to the span of transmission line.

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备注/Memo

备注/Memo:
收稿日期:2019-07-01作者简介:武利会(1973—),男,博士,高级工程师,主要从事高电压绝缘及输电线路技术研究。基金项目:广东电网公司科技项目(编号:GDKJXM20182401)。
更新日期/Last Update: 2020-02-20