In the article

for the structure with extendinL out and flanging foil in current power capacitor

the simplified circuit model is adopted to solve electric-field distribution in the insulation near the foil edge

the conceptions that indicating electric-field distribution and the formula of calculation of electric-field distribution are given.The electric-field distribution in the insulation of foil edge is extremely not even

and the maximum field strength is on the surface of the foil edge and its value equals to the product of average field strength and distortion factor.With increase of distance to the foil edge

it is decayed quickly to zero by following component function.Those conceptions and formula are helpful to know and understand edge electric-field and provide theoretical guide to the structure design

performance analysis and manufacturing process of power capacitor

and

at the same time

calculation formula of edge capacitance is also given.