Simulation of Mechanical Characteristics of Contact Group During the Switching Process of On-Load Tap Changer

The contact group is the core component of the on-load tap changer, which has a crucial impact on the mechanical life of the tap changer. In this section, the dynamic and static simulation models of the transition contact of the on load tap changer are established, and the static and dynamic simulation analysis of the contact process of the contact is carried out using the COMSOL finite element software, and the motion characteristics of the dynamic contact bridge of the transition contact are analyzed. Through the simulation analysis, the mechanical characteristics of the Contact process of the transition contact of the on load tap changer are obtained. The greater the stiffness coefficient of the spring behind the static contact, the greater the contact pressure on the contact surface, and the greater the degree of spring bounce; The curvature radius of the moving contact is different, and the degree of spring bounce is different, which needs to be selected and analyzed according to the actual situation; The higher the initial speed of the moving contact, the longer the bounce time, and the more intense the bounce.