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发明公开
CN104198902A 提高110kV电缆接头局部放电超高频检测效果的方法 无效 - 驳回

提高110kV电缆接头局部放电超高频检测效果的方法
摘要：
一种提高110kV电缆接头局部放电超高频检测效果的方法，首先，利用高频结构仿真器HFSS建立了电缆接头的三维仿真模型，分析了在电缆接头内部发生局部放电时，超高频信号通过屏蔽层断开处辐射出来的强度及其分布特点，验证了采用外置式传感器的可行性，得到了信号最强的传感器最佳安放位置。然后，根据微带贴片天线理论，制作了外置式超高频传感器，用于现场检测。最后，利用超高频传感器进行了现场实测分析，验证仿真结果。本发明具有操作方便、检测准确度高、适用范围广泛的优点。
摘要（英）：

Disclosed is a method for improving a local discharge ultrahigh frequency detection effect of a 110kV cable joint. Firstly, a three-dimensional simulation model of the cable joint is established by means of a high frequency structure simulator (HFSS), strength and distribution characteristics of ultrahigh frequency signals which are radiated from disconnecting positions of a shielding layer are analyzed when local discharge occurs in the cable joint, feasibility of usage of an external sensor is verified, and the optimal sensor arranging position with the strongest signal can be obtained. Then according to a microstrip patch antenna theory, an external sensor ultrahigh frequency sensor is manufactured for field detection. Finally, the ultrahigh frequency sensor is used for performing field detection analysis, and a simulation result is verified. The method for improving the local discharge ultrahigh frequency detection effect of the 110kV cable joint has the advantages of convenient operation, high detection accuracy and wide application range.

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