Circuit breaker monitoring device and monitoring system

Abstract

The invention discloses a circuit breaker monitoring device and a monitoring system, the circuit breaker monitoring device comprises a primary circuit module, a secondary circuit module and a communication module, the primary circuit module comprises a three-phase power transmission line, three primary input ends of the three-phase power transmission line are respectively connected with three same-side wire outlet ends of a circuit breaker, and the secondary circuit module is connected with the communication module; three primary output ends of the three-phase power transmission line are respectively connected with three wiring ends of a power grid; the secondary circuit module is connected with an internal circuit of the circuit breaker so as to monitor the internal circuit; the secondary circuit module is also used for monitoring a circuit signal passing through the primary circuit module; and the communication module is connected with the secondary circuit module and is used for communicating with the outside. According to the circuit breaker monitoring device, the primary circuit module is connected in series between the original circuit breaker and the power grid, the operation of the original circuit breaker is not interfered, the electrical parameters and internal circuits of the circuit breaker are monitored, and compared with a mode of directly replacing the circuit breaker with an intelligent circuit breaker, the equipment cost of the circuit breaker monitoring device is greatly reduced.

Description

technical field [0001] The invention relates to the field of electric equipment, in particular to a circuit breaker monitoring device and a monitoring system. Background technique [0002] At present, the country has proposed the goal of building a high-elasticity distribution network intelligent station area to achieve comprehensive collection and transparent management of power grid data. The key equipment plays the dual role of protection and distribution, and has the characteristics of a large number and a wide coverage area. [0003] At present, the circuit breakers operating in the low-voltage distribution area are mainly electromagnetic and electronic circuit breakers, with relatively single functions and only basic protection functions. However, intelligent construction has put forward many new requirements for circuit breakers, including monitoring, communication , control management and other requirements, these requirements cannot be realized by the current circu...

AI Technical Summary

Problems solved by technology

[0003] At present, the circuit breakers operating in the low-voltage distribution area are mainly electromagnetic and electronic circuit breakers, with relatively single functions and only basic protection functions. However, intelligent construction has put forward many new requirements for circuit breakers, including monitoring, communication , control management and other requirements, these requirements cannot be realized by the circuit breaker currently in operation

Although some manufacturers have developed smarter new circuit breakers in recent years, it is too expensive to replace all operating circuit breakers with intelligent circuit breakers, and the operating circuit breakers have not reached the preset level. service life, direct scrapping will cause a large waste of resources

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