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Study of numerical relationship between temperature and electric field in power cables safety monitoring
Pages: 20-24
Year: Issue:  5
Journal: Relay

Keyword:  地下电缆有限元温度场电场;
Abstract: 首先采用有限元法分别计算了8.7/15 kV YJV 1×400 mm2直埋式电缆的温度场以及电场分布,在此基础上分析了二者之间的数值关系.计算结果表明电缆的温度场与电场之间呈近似的线性关系.从而在实际工程中,可以通过在线监测电缆的温度场分布,首先可以推算其负荷,对电缆负荷进行监控.并根据电缆电场与温度场之间的线性关系,推算其电场分布,得出电缆绝缘介质内的电场分布规律,判断内部电场是否超过安全限值...
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