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Bushing optimization

Problem Type:
Axisymmetric problem of electrostatics.

Geometry:

cylindrical bushing model

Given:
Relative permittivity of ceramic ε = 2.4;
HV conductor potential U = 10 kV
Plate potential 0 V

Problem:
Determine the optimal design of the pass-through insulator.

Solution:
Three cases were simulated to compare the electric field stress values in the air and in the bushing material. Designs include the cylindrical bushing, bushing with a conductive layer on the lateral surface, and a bushing with a conductive layer and a conical tip.

Results:
Electric potential distribution in the bushing.

Cylindrical bushing
cylindrical bushing

Pass through insulator
pass through insulator

Cone bushing
cone bushing

Electric stress distribution along the surface of the cone bushing.
cone bushing surface electric stress

Watch on YouTube.

Download icon Download simulation files (files may be viewed using any QuickField Edition).