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非均匀积污下高压绝缘子电位及电场分布特性

毛东 唐秋明 高强

毛东, 唐秋明, 高强. 非均匀积污下高压绝缘子电位及电场分布特性[J]. 力学学报, 2020, 52(3): 698-706. doi: 10.6052/0459-1879-20-042
引用本文: 毛东, 唐秋明, 高强. 非均匀积污下高压绝缘子电位及电场分布特性[J]. 力学学报, 2020, 52(3): 698-706. doi: 10.6052/0459-1879-20-042
Mao Dong, Tang Qiuming, Gao Qiang. DISTRIBUTION CHARACTERISTICS OF ELECTRIC POTENTIAL AND ELECTRIC FIELD ALONG HV INSULATORS UNDER NON-UNIFORM CONTAMINATION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(3): 698-706. doi: 10.6052/0459-1879-20-042
Citation: Mao Dong, Tang Qiuming, Gao Qiang. DISTRIBUTION CHARACTERISTICS OF ELECTRIC POTENTIAL AND ELECTRIC FIELD ALONG HV INSULATORS UNDER NON-UNIFORM CONTAMINATION[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(3): 698-706. doi: 10.6052/0459-1879-20-042

非均匀积污下高压绝缘子电位及电场分布特性

doi: 10.6052/0459-1879-20-042
基金项目: 1)国家自然科学基金资助项目(11772211)
详细信息
    通讯作者:

    2)高强, 教授, 主要研究方向: 环境流体力学及应用力学. E-mail: gaoqiang@suda.edu.cn

  • 中图分类号: X

DISTRIBUTION CHARACTERISTICS OF ELECTRIC POTENTIAL AND ELECTRIC FIELD ALONG HV INSULATORS UNDER NON-UNIFORM CONTAMINATION

  • 摘要: 高压绝缘子在输变电工程中承担着绝缘的重要角色. 由于工业化的飞速发展, 雾霾和沙尘等天气的频繁出现, 污秽颗粒在大气流场的作用下在绝缘子表面沉积, 容易发生污闪事故, 严重影响着电网的安全运行. 将高压绝缘子污闪发生的主要过程-绝缘子的动态积污和表面电场畸变过程进行耦合分析, 探究污闪发生的机理. 建立绝缘子周围的欧拉-欧拉气固两相流模型, 对绝缘子动态积污过程进行数值模拟, 获得绝缘子表面的非均匀积污层分布; 创建其表面导电层单元, 结合有限元方法建立积污绝缘子电场模型, 对非均匀积污层分布的绝缘子串进行电位及电场分析. 研究结果表明: 在积污层非均匀分布情况下, 绝缘子表面积污层周向位置对其电位分布的趋势影响较小, 但对绝缘子表面电场畸变的发生位置影响较大. 随着周向位置的变化, 电场畸变位置的偏移也不同, 且侧风面电场畸变的偏移最大. 随着积污层电导率的增大, 电场强度大于清洁绝缘子表面的场强, 且背风侧的场强畸变最大.

     

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  • 收稿日期:  2020-01-10
  • 刊出日期:  2020-06-10

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