This paper reports on a method combining the use of finite element simulations and external measurements to provide preliminary condition diagnosis of oil-filled cable sealing ends (CSEs) without requiring downtime. Good agreement has been obtained between the predictions from the electric field and thermal simulations and the measurements on a 132 kV oil-filled CSE. The electrostatic computation combined with electric field measurements can provide information regarding the electric field distribution inside the CSE and help in identifying potential issues with the CSE design, the materials or the cable termination process. The thermal computation combined with thermal imaging can reveal potential problems, such as high resistance connection to the busbar, and provide information regarding the cooling efficiency of the liquid dielectric. The method presented can provide the starting point for prioritizing maintenance operations on CSEs.

中文翻译：

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132 kV陶瓷充油电缆密封端的电场和热分析

本文报告了一种方法，该方法结合了有限元模拟和外部测量的使用，可在不停机的情况下对含油电缆密封端（CSE）进行初步状态诊断。在电场和热模拟的预测与132 kV充油CSE的测量之间已经获得了很好的一致性。静电计算与电场测量相结合，可以提供有关CSE内部电场分布的信息，并有助于识别CSE设计，材料或电缆端接过程中的潜在问题。结合热成像的热计算可以揭示潜在问题，例如与母线的高电阻连接，并提供有关液体电介质冷却效率的信息。