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Numerical Computation of Electric Field in High-Voltage System – Case Studies

ABSTRACT Several components, which are widely used in high-voltage systems, are critical in nature from the viewpoint of failure due to electrical discharges. Two common examples of such components are bushings and cable terminations. Insulators that are used in large numbers in all highvoltage systems are prone to failure due to surface pollution or surface wetting. These unwanted failures could be prevented by appropriate design only if the electric field distribution is estimated accurately through numerical field computations. However, results of numerical field computations need to be validated using benchmark models for which analytical solutions are available. ...

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