[1]刘婉莹,文 武,卢文浩,等.温度对多柱并联避雷器均流特性的影响研究[J].电瓷避雷器,2020,(02):99-104.[doi:10.16188/j.isa.1003-8337.2020.02.016]
 LIU Wanying,WEN Wu,LU Wenhao,et al.The Effects of Temperature on Current Distribution of Multi-Column Parallel Surge Arresters[J].,2020,(02):99-104.[doi:10.16188/j.isa.1003-8337.2020.02.016]
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温度对多柱并联避雷器均流特性的影响研究()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年02期
页码:
99-104
栏目:
避雷器
出版日期:
2020-04-25

文章信息/Info

Title:
The Effects of Temperature on Current Distribution of Multi-Column Parallel Surge Arresters
作者:
刘婉莹1文 武2卢文浩1王光耀2
(1.中国南方电网超高压输电公司检修试验中心, 广州 510663; 2.武汉大学电气工程学院, 武汉 430072)
Author(s):
LIU Wanying1 WEN Wu2 LU Wenhao1 WANG Guangyao2
(1.Maintenance & Test Center, CSG EHV Power Transmission Company, Guangzhou 510663, China; 2.School of Electrical Engineering, Wuhan University, Wuhan 430072, China)
关键词:
避雷器 均流特性 能量吸收能力
Keywords:
arresters current distribution test energy absorption capability
DOI:
10.16188/j.isa.1003-8337.2020.02.016
摘要:
高压直流输电系统的操作过电压持续时间长、释放的能量大,为提高避雷器的能量吸收能力,高压直流避雷器一般采用多柱电阻片并联的结构,柱间电流分布的均匀程度直接影响避雷器的整体能量吸收能力。本文选用国内3个避雷器生产厂家的电阻片,试验研究了电阻片整体温升及柱间温差对电流分布特性的影响。研究结果表明,当电阻片温度整体升高时,虽然不同厂家电阻片的电流分布不均匀系数随温度变化的规律具有一定的差异,但由此引起的最大电流分布不均匀系数并不会超过标准限值; 当柱间温差增加时,3个厂家电阻片的电流分布不均匀系数均表现出随柱间温差的增加而增大的趋势。
Abstract:
The switching overvoltage in HVDC power system usually has long duration and discharge more energy than normal stations. The multi-column surge arresters are usually used to improve energy absorption ability, which affected by the current disparity among columns. The author studies the effects of temperature on current disparity of multi-column arresters selected from three manufacturers. Two different types of experiments were carried out, including uniform and non-uniform temperature rise. The research results show that although the characteristic of current disparity with temperature make a difference between different manufacturers, when the temperature of the valve plate is rise as a whole, the max-disparity coefficient does not exceed the standard limit. When the temperature difference between the columns increases, the uneven-coefficient of current distribution of valve plates increases with the increase of temperature.

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备注/Memo

备注/Memo:
收稿日期:2018-06-25作者简介:刘婉莹(1989—),女,工程师,主要从事高电压试验技术、过电压与绝缘配合研究工作。
更新日期/Last Update: 2020-04-25