An intelligent operating mechanism for a circuit breaker

Abstract

The invention discloses an intelligent operating mechanism used for a circuit breaker. The intelligent operating mechanism is provided with a brake closing haft shaft, a brake separating half shaft, an energy storage spring shaft, a brake closing pawl and a brake separating pawl. The brake closing haft shaft, the brake separating half shaft and the energy storage spring shaft are called as three sets of transmission shafts. At least one set of the three sets of the transmission shafts is provided with a pressure sensor. Direct monitoring is performed on the operating mechanism body used for the circuit breaker, the function is novel and the structure is ingenious so that the working state of the operating mechanism can be monitored in real time, and the intelligent operating mechanism used for the circuit breaker is significant for reducing fault rate of the operating mechanism and guaranteeing stable and safe operation of an electric power system.

Description

technical field [0001] The invention belongs to the technical field of circuit breakers, and in particular relates to an intelligent operating mechanism for circuit breakers. Background technique [0002] As an important protection and control device in a power system, a circuit breaker can not only close, carry and break current under normal circuit conditions, but also close, carry and break current under abnormal circuit conditions within a specified time . During the operation of the power system, it is required that the circuit breaker can quickly cut off the faulty line or electrical equipment. Accidents happen. The international survey organized by the International Large Power Grid Conference shows that among the faults of circuit breakers, mechanical faults account for more than 80% of all faults, and the mechanical part of circuit breakers is mainly the operating mechanism. There are many consequences of the failure of the operating mechanism, mainly including r...

AI Technical Summary

Problems solved by technology

Among them, the refusal of the operating mechanism will expand the influence of line faults, cause busbar faults or main transformer faults, and cause great harm to the system. It is the most serious accident.

If the opening and closing speed does not meet the requirements, it will cause the circuit breaker to fail to effectively extinguish the arc when cutting and closing the load current or fault current, resulting in operating overvoltage or explosion of the circuit breaker, and the consequences are quite serious.

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