In this paper

according to a GIS equipment contact failure in 220 kV substation

the site GIS equipment after the demolition of the spring finger is found deformation. With the help of X-ray detection technology

it has been founded that the spring fingers have varying degrees of deformation in six groups of GIS equipment. Combining with the field treatment

the reasons for the deformation of spring fingers are analyzed. Deformation is caused by excessive impact load during contact between the moving contact and the spring fingers. According to the characteristics of the spring contact

the model is created. The working condition of the spring contact is simulated by Adams simulation software

and the causes of the deformation of the spring are analyzed. The simulation results show that the spring contact force increases with the spring contact during the contact of the spring contact

and the spring stress is concentrated under the action of the gear groove

causing the spring to deform. According to the deformation reason

the optimization scheme of the spring contact is put forward

and the faulty GIS is processed according to the optimization scheme.