Abstract
In high-voltage equipment, unpressurized air is utilized generally as the principal insulating medium. Unfortunately, the tendency for the system to grow physically big is a flaw in the air-insulated design. However, using dielectric barriers might increase the breakdown voltage while also making the equipment smaller. Problems in high voltage techniques are mostly field oriented electrostatic problems. Many researchers have employed many numerical methods to solve the Laplace and Poisson equations for the fields among complicated electrode configurations. The breakdown properties of gases are widely studied using the needle-plane gap. The field pattern and distribution of voltage in a needle-plane gap with a vertical orientation were quantitatively analysed in this work using the finite element method (FEM). To determine the discharge phenomenon, the greatest field in the gap was tested for various with and without barriers concerning various locations between electrodes. Additionally, an approximate breakdown voltage simulation model is suggested and supported by the experimental findings.
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