An engineering approach to the computational prediction of surface charging during dielectric tests of medium voltage devices is presented. It is based on a formulation of the saturation charge boundary condition applied to an iteratively estimated area on the insulation surface. The simulation procedure is explained for a simple case study including a rod electrode, shaped barrier, and grounded enclosure. Applications of this procedure to 3-D models of medium voltage devices are presented.

中文翻译：

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用于预测中压范围内介电强度的表面充电模型

提出了一种工程方法，用于在中压设备的介电测试过程中对表面电荷的计算进行预测。它基于对绝缘表面上的迭代估计区域应用的饱和电荷边界条件的公式。在一个简单的案例研究中说明了仿真过程，包括棒状电极，定型屏障和接地外壳。介绍了该程序在中压设备的3-D模型中的应用。