期刊论文

Analysis on Electric Field Calculation of UHV ZnO Surge Arrester

中文

高压电器

1001-1609

2019

55

2

1-7

10.13296/j.1001-1609.hva.2019.02.001

______________________________ 收稿日期：2018⁃06⁃20； 修回日期：2018⁃08⁃08 基金项目：国家自然科学基金资助课题(50977003)；电力与交通安全监控及节能技术教育部工程研究中心基金(2010#03)。 Project Supported by National Natural Science Foundation of China(NSFC)(50977003)，Power and Traffic Safety Monitoring and Energy Saving Engineering Research Center of Ministry of Education Fund(2010#03).

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特高压氧化锌避雷器是绝缘配合的基础,避雷器性能的好坏直接影响整个变电站运行的安全稳定。以1 000 kV变电站用氧化锌避雷器为例,采用Ansoft Maxwell有限元软件仿真计算其周围电场分布情况,尤其是距离地面2 m高度处,避雷器一侧水平方向上沿线场强大小;并分析避雷器发生损坏时,电场强度变化情况,以及考虑有无高压线、高压引线的长度、求解域大小及底座的高度对电场分布的影响。结果表明:各避雷器损坏情况下,最大场强均有所减小;去除高压线和缩小求解域避雷器周围最大场强增大;缩短高压引线的长度,距地面2 m高度处沿线场强有所增大;提高底座高度,沿线场强减小。研究结果为避雷器电场分析提供了一...

Surge arrester used for UHV power systems is a base of insulation co-ordination.The safety and stability to whole substation is directly influenced by the characteristics of surge arrester.A case study of 1 000 kV ZnO surge arrester for substation,the simulation calculation of electric field around arrester,especially the field strength which from the ground 2 m height along the level of the side of surge arrester is carried out by using finite element analysis software Ansoft Maxwell.Analyzing the changes of field strength when arrester damage occurs and considering the influence of the high-...