A new type of rotary electromagnetic operating mechanism for cps and its working method

Abstract

The invention relates to a CPS novel rotary electromagnetic operating mechanism, which comprises an insulating frame, a static iron core is fixedly connected to the insulating frame, a coil group is wound on the static iron core, and a moving iron core is coaxially sleeved on the outer periphery of the static iron core , The end side of the moving iron core is connected with the insulating frame through a tension spring, and the moving iron core is provided with a rotating closing limit and a rotating opening limit in the direction of its rotation, and the tension spring is at the rotating closing limit and the rotating opening limit. When the position is limited, it deviates from the central axis of the iron core, and a moving contact is fixedly connected to the insulating non-magnetic-conductive ring connected to the moving iron core, which is used to turn on and off the static contact. During the action process, the excitation state of the opening and closing coils can be closed-loop adjusted, and then the opening and closing speed can be adjusted. When the normal load current is switched on and off, the contact bounce during the closing process is reduced, the mechanical impact during the opening process is reduced, and the electrical life and mechanical life are relatively high; when the overload and short-circuit current are interrupted, the reverse electromagnetic force can be quickly applied , together with the spring reaction force, quickly cut off the fault current, and have both control and protection functions.

Description

technical field [0001] The invention relates to a CPS novel rotary electromagnetic operating mechanism and a working method thereof, which are suitable for CPS electrical appliances and belong to the field of switchgear. Background technique [0002] The electromagnetic switch undertakes the task of disconnecting and connecting the main circuit in the power system, and its performance index directly affects the safety and stability of the entire power system. The operating mechanism is the core component of the electromagnetic switch. According to the investigation of the International Large Grid Conference and the State Grid, the failure of the electromagnetic switch mainly occurs in the operating mechanism. Nowadays, how to improve the action reliability and breaking capacity of the operating mechanism has become a hot topic in electromagnetic switch research. [0003] The early designed electromagnetic operating mechanisms are mostly AC electromagnetic operating mechanis...

AI Technical Summary

Problems solved by technology

However, there are still many problems in the operation of the permanent magnet operating mechanism that restrict its development. For example, permanent magnet materials will demagnetize when they work in high temperature and strong magnetic field interference environments.

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