电气工程学报 ›› 2021, Vol. 16 ›› Issue (2): 69-76.doi: 10.11985/2021.02.009

• 特邀专栏:高压电工装备绝缘 • 上一篇    下一篇

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考虑隔板沿面闪络的气固复合绝缘工频耐压特性*

郑跃胜(), 谢鑫达(), 黄惠芬(), 何桐桐()   

  1. 福州大学电气工程与自动化学院 福州 350108
  • 收稿日期:2021-03-02 修回日期:2021-04-07 出版日期:2021-06-25 发布日期:2021-08-05
  • 通讯作者: 何桐桐 E-mail:yueshengzheng@fzu.edu.cn;xie_xinda@163.com;842410627@qq.com;hett@fzu.edu.cn
  • 作者简介:何桐桐,男,1991年生,博士,讲师。主要研究方向为气体放电等离子体及其应用。E-mail: hett@fzu.edu.cn
    郑跃胜,男,1981年生,博士,教授。主要研究方向为高电压与绝缘技术。E-mail: yueshengzheng@fzu.edu.cn
    谢鑫达,男,1995年生,硕士研究生。主要研究方向为气体放电。E-mail: xie_xinda@163.com
    黄惠芬,女,1997年生,硕士研究生。主要研究方向为气体放电。E-mail: 842410627@qq.com
  • 基金资助:
    * 国家自然科学基金(51607041);电力系统国家重点实验室(SKLD19KM06)

AC Withstand Characteristics of Gas-solid Hybrid Insulation Considering Flashover Along Barrier Surface

ZHENG Yuesheng(), XIE Xinda(), HUANG Huifen(), HE Tongtong()   

  1. College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108
  • Received:2021-03-02 Revised:2021-04-07 Online:2021-06-25 Published:2021-08-05
  • Contact: HE Tongtong E-mail:yueshengzheng@fzu.edu.cn;xie_xinda@163.com;842410627@qq.com;hett@fzu.edu.cn

摘要:

为了分析隔板沿面闪络与气固复合绝缘系统工频耐压特性的关系,结合工频耐压试验和有限元仿真,从等效击穿路径和平均电场强度两个角度进行分析。研究发现,气固复合绝缘间隙的击穿电压无法通过典型击穿路径直接计算。间隙击穿前,隔板在不同位置下沿面路径承受的平均场强并不相同,但不同尺寸隔板承受的平均场强基本一致。结果表明,已知某种尺寸隔板在给定位置的击穿电压时,即可预测其他尺寸隔板在相同位置的击穿特性。

关键词: 气固复合绝缘, 工频耐压特性, 闪络, 电场强度

Abstract:

In order to analyze the relationship between the flashover along the barrier surface and the AC withstand voltage characteristics of the gas-solid hybrid insulation system, the equivalent breakdown path and the average electric field strength are analyzed by combining the AC withstand experiment and finite element simulation. It is found that the breakdown voltage of gas-solid hybrid insulation gap cannot be directly calculated through the typical breakdown path. Before gap breakdown, the average electric field strength along the surface path is different when the barriers are in different positions, but the average electric field strength of the barriers with different sizes is almost the same. The results show that when the breakdown voltage of a fixed size barrier at a given position is known, the breakdown characteristics of other size barriers at the same position can be predicted.

Key words: Gas-solid hybrid insulation, AC withstand characteristics, flashover, electric field strength

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