Electrostatic simulation of 3 phase cable

QuickField simulation example

This example is prepared by Dariusz Czerwinski

Engineering question
How to find conductor arrangement effect in three-phase cables?

Engineering answer
Set up a plane-parallel QuickField Electrostatics problem for a three-phase cable arrangement and evaluate the conductor arrangement effect on electric field from computed field results.

Typical applications
three-phase underground cables, cable conductor arrangements, power cable insulation layouts

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

Problem Type
Plane-parallel problem of electrostatics.

Geometry

The diameter of the cable with insulation is 20mm (for all cables).
The insulation thickness is 2 mm.

Given
Relative permittivity of individual insulation ε = 3.3;
Relative permittivity of common insulation ε = 3;
Voltage applied U_A = 9.8 kV, U_B = -4.9 kV, U_C = -4.9 kV.

Task
Determine the field strength, potential in cable and in insulation.

Results

• Video: Electrostatic simulation of 3 phase cable. Watch on YouTube
  
• View simulation report in PDF