Operating mechanism for lever type quick change-over switch

Abstract

The invention relates to an operating mechanism for a lever type quick change-over switch. When a main power supply is normal, a main vacuum arc-extinguishing chamber connected with a main operating mechanism unit is kept in a normally closed state. When a voltage sag fault occurs in the main power supply, the main vacuum arc-extinguishing chamber is disconnected by the main operating mechanism unit through electromagnetic repulsive force, and meanwhile, the auxiliary vacuum arc-extinguishing chamber connected with the auxiliary operating mechanism is closed through the lever unit, so that closing of the standby power supply is realized, and seamless switching from the main power supply to the standby power supply is realized. When the main power supply returns to normal, the auxiliary vacuum arc-extinguishing chamber is disconnected by the auxiliary operating mechanism unit through electromagnetic repulsive force, and meanwhile, the main vacuum arc-extinguishing chamber connected with the main operating mechanism is closed through the lever unit, so that closing of the main power supply is realized, and seamless switching from the standby power supply to the main power supply is realized. According to the mechanism, the design of a branch magnetic circuit of a quick change-over switch operating mechanism is realized, and the reliability of opening and closing of a quick change-over switch is improved.

Description

technical field [0001] The invention relates to an operating mechanism for a lever-type quick changeover switch, belonging to the field of quick changeover switch operating mechanisms. Background technique [0002] With the rapid development of the social economy and the continuous construction of infrastructure, the interruption of power supply has a great impact on the current economy. The control signals of important transportation hubs and important communication hubs caused by power outages are chaotic, causing serious social chaos and even endangering people. Safety. Therefore, buildings with a higher power supply level must be able to provide sufficient power supply under normal conditions, and also have sufficient backup power supply when the normal power supply fails to ensure the reliable operation of the system. Therefore, the fast and safe switching of the main-standby power supply is extremely important. [0003] With the continuous growth of the capacity of t...

AI Technical Summary

Problems solved by technology

However, this puts extremely high requirements on the operating mechanism of the fast switching switch. The traditional operating mechanism is difficult to meet the speed requirements. Research on new operating mechanisms with fast action capabilities has become a current research hotspot.

At present, the fast switching switches based on the electromagnetic repulsion operating mechanism are mostly in the stage of theoretical research and principle prototype, and there are no reliable engineering application cases, which seriously affects the development and use of fast switching switches

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