220kV Explosion-proof High-voltage Cable Joint end Folding Corner Design

To solve the stress concentration at the corner of the end of the explosion-proof high-voltage cable joint when the explosion is caused by the short circuit arc, the paper calculated the stress distribution at the high-voltage cable joint when the explosion occurs by multi-physics coupling and finite element calculation. By calculating the stress concentration coefficient and comparing the stress concentration at different angles, it was concluded that when the bending Angle is about 122°, the stress concentration coefficient is the smallest, which provides the design scheme of the bending Angle at the end part for the design of explosion-proof high-voltage cable joint.