In predicting electrical tree growth behavior of

practical insulation materials under operating voltages, one must

consider the effects of mechanical tensile residual stresses,

electrical field stresses and the voids distribution to the electrical

tree growth. In this study a general model of electrical tree

propagation is firstly proposed depend on voids location in the

polymer, combines both the mechanical tensile residual stresses

and the electrical field distribution in the medium using charge

simulation method in combined with genetic algorithms to

describe the local damage features around the tree tip, and

enables this effect of compressive to predict the electrical tree

dynamic growth. The obtained results have been assessed

through comparison with available experimental data