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高压电器  2015 

动车组车顶绝缘子电场分布特性研究

DOI: 10.13296/j.1001-1609.hva.2015.12.026, PP. 149-154

Keywords: 绝缘子,电场,局部放电

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Abstract:

动车组车顶绝缘子作为车顶的主要绝缘设备,其可靠性直接影响动车组的正常运行。文中基于ANSYS有限元软件分析了车顶绝缘子结构对其电场分布的影响,通过分析洁净状态下和水滴附着状态下绝缘子的电位和电场,得到伞裙结构对绝缘子电场分布特性的影响。结果表明,绝缘子顶部大小伞裙结构的不同配合方式会影响绝缘子的电场分布,尤其水滴附着状态下,绝缘子顶部采用大伞裙结构的会增加绝缘子电场强度,随着电场强度的增加,增加了绝缘子顶部发生局部放电的可能性。

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