基于天线模型的变压器局放辐射电磁波耦合特性仿真计算

Simulation of transformer partial discharge radiation electromagnetic wave coupling characteristics based on antenna model

为研究变压器局部放电辐射电磁波的耦合特性,对某型号220kV变压器建立了相应的口径天线模型,采用FEKO仿真计算软件对变压器局部放电时通过套管耦合到设备外部的辐射电磁波频谱特征进行了仿真计算,获得了变压器局部放电辐射电磁波的频谱耦合特性曲线,该曲线对研究通过测量辐射电磁波超高频分量识别变压器局部放电的方法具有一定的参考价值.

To research coupling characteristics of transformer partial discharge radiation electromagnetic wave, an aperture antenna model for a certain type of 220 kV transformer is established. Using FEKO simulation software to calculate the spectrum feature of radiation electromagnetic wave that is coupled to e- quipment external through the casing when transformer partial discharge is generated, and then the spec- trum coupling characteristic curves are obtained. The curves have the certain reference value to the identi- fication of transformer partial discharge by measuring the ultra-high frequency component of the radiation electromagnetic wave.