A spring circuit breaker fault simulation device

Abstract

The invention discloses a spring circuit breaker fault simulation device comprising an energy storage motor (1), a small chain wheel(2), a large chain wheel(3), a cam (4), a position-restricted pin (5), a maintaining supporting member (6), a main shaft (7), a synchronizing shaft (8), a connecting electromagnet (9), a connecting spring (14), a release maintaining sheet (11), and a fixing seat (10). The maintaining supporting member (6) is fixedly disposed on the synchronizing shaft (8) by a bolt through hole (13), and six position-restricted blocks of the maintaining supporting member (6) are used for the position restriction of the position-restricted pins (5) of the main shaft (7). The release maintaining sheet (11) is fixedly disposed on the synchronizing shaft (8) by a fastening screw hole (12). By adopting the form of the spring operation mechanism of the ZN-63 indoor fixing packaging type high voltage vacuum circuit breaker, the lengths of the position-restricted blocks of the maintaining supporting member (6) can be changed, and can be used for the position restriction of the position-restricted pins of the main shaft on the different positions, and in addition, the tension length of the connecting spring can be changed, and the energy stored by the connecting spring can be reduced, and therefore the loosening phenomenon of the connecting spring can be simulated in the short-time working period of the circuit breaker, the connecting time and the connecting speed of the circuit breaker can be changed, and the characteristic signals of the faults can be acquired.

Description

technical field [0001] The invention relates to a spring circuit breaker, in particular to a fault simulation device for a spring circuit breaker. Background technique [0002] High-voltage circuit breaker is the most important and complex electrical switchgear in the power system. It directly controls the operation and exit of the power grid line, and can quickly cut off the faulty line. It is the key equipment to ensure the normal and reliable operation of the power grid system. Spring circuit breakers are generally composed of five parts: operating mechanism, transmission mechanism, breaking element, supporting insulator and base. The reliability of the transmission mechanism is extremely important, and it is required to be able to successfully separate and close the circuit under any working environment and line conditions. It has high requirements for the life of the mechanism, motion accuracy and component strength. Huge losses are caused. According to statistics, the...

AI Technical Summary

Problems solved by technology

During the working period, the spring of the spring circuit breaker will be subjected to a high stress state, and its elastic strain will gradually undergo plastic deformation, which will reduce the energy storage capacity of the spring, and eventually cause the closing and opening speed to be too slow

There are many studies on circuit breaker faults at home and abroad, but most of them stay at the theoretical stage. It is very difficult to obtain actual fault signals of circuit breakers, which makes the fault simulation model of circuit breakers unconvincing due to the lack of exact experimental data support.

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