Suspension insulator

QuickField simulation example

Disc insulators are connected in chain of two. The insulators are suspended from the grounded tower arm and carry HV power line conductor.

Problem Type electrostatics.

Geometry 3D import.

Given
Relative permittivity of the insulator (glass) ε_r = 5,
Transmission line potential V = 10 kV (RMS, line to line voltage).
Ground voltage = 0 V.

Task
Calculate the electric field stress distribution on insulators surface.

Solution
Line voltage is measured between the phase conductors. The phase voltage (between phase conductor and ground) is √3 times smaller than the line voltage.
We should specify the peak voltage value (*√2).

Results
Electric field stress distribution along the suspension insulators' surface.

• Video: Suspension insulator. Watch on YouTube

  00:00 Introduction
  00:50 Transfer CAD model to QuickField through STEP file export/import.
  02:40 Adding background region to the model. Selecting objects
  03:40 Body labels' assigning. Hide/made transparent the body.
  06:10 Selecting with rubber band.
  07:05 Edit body labels physical properties
  08:05 Boundary conditions on faces.
  10:55 Model meshing and problem solving
  11:25 Result analysis. Colored surface. Cut by plane.
  12:55 Result analysis. 2D Section window local values, integrals. XY-plot along the custom contour. Local values, integrals.
  15:40 Result analysis. Local values, integrals.
  16:05 Result analysis. Change presentation types: slice plot, vectors, scatter plot. XY-plots.
  

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