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2023 04 46-53
配电网电缆接头SiR-XLPE绝缘界面热应力与击穿电压关系的实验与分析
基金项目(Foundation): 国家自然科学基金项目“雷电流对张紧状态绞合金属地线的损伤机理研究”(51977083);广东省自然科学基金项目“多重回击的雷电弧根在金属绞合地线上的运动机制研究”(2022A1515011182)
邮箱(Email):
DOI: 10.19929/j.cnki.nmgdljs.2023.0054
中文作者单位:

华南理工大学电力学院,广州 510640

摘要(Abstract):

通过构建电磁-热-应力多场耦合的电缆接头模型,建立配电网电缆不同稳态负荷电流条件下界面温度与绝缘界面压力的联系,随后通过电缆接头绝缘界面电压击穿实验探究界面压力对绝缘界面起始击穿电压的影响。结果表明:电缆接头绝缘界面压力与线路负荷状态存在强耦合关系,当电缆线芯达到90℃稳态运行时,绝缘界面处的界面压力为初始值的两倍以上;绝缘界面起始击穿电压随着界面压力的增大而增大。在实际线路运维过程中,可以适当提高电缆负荷,促使绝缘界面热应力增大,以提高绝缘界面起始击穿电压。

关键词(KeyWords): 配电网;电缆接头;绝缘界面;热应力;电压击穿
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基本信息:

DOI:10.19929/j.cnki.nmgdljs.2023.0054

中图分类号:

引用信息:

[1]郭耀栋,赵一枫,胡冉等.配电网电缆接头SiR-XLPE绝缘界面热应力与击穿电压关系的实验与分析[J].内蒙古电力技术,2023(04):46-53.DOI:10.19929/j.cnki.nmgdljs.2023.0054.

基金信息:

国家自然科学基金项目“雷电流对张紧状态绞合金属地线的损伤机理研究”(51977083);广东省自然科学基金项目“多重回击的雷电弧根在金属绞合地线上的运动机制研究”(2022A1515011182)

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