Prepaid circuit breaker reclosing device and implementation method

Abstract

The invention discloses a prepaid circuit breaker reclosing device and an implementation method. The device comprises a casing body and a cover body. A gear reduction motor, a guide wheel, a handle device, a control gear, a control circuit device, a pull rod, a tripper, a moving contact, a hot double gold metal piece, a static contact and an arc extinguishing device are arranged in the casing bodyand the cover body. The state detecting magnetic point of the control gear is used to detect opening, closing and tripping signals. A tripping function is realized through a tripping bump. Accordingto the invention, the poles (including the P pole and the N pole) of a circuit breaker are integrated with the tripping mechanisms of the poles; through the whole linkage of the handle device, the pull rod and the tripper, disconnection synchronization is realized; the moving contact and the static contact are matched in the manner of surface contact, which effectively reduces closing arcs; a control circuit board detects a magnetic point signal by receiving the state on the control gear; forward and reverse control of the gear is realized through program control; accurately transmitting toa small gap before a critical point is realized; and the opening and closing sensitivity of the circuit breaker is greatly improved.

Description

technical field [0001] The invention relates to the technical field of a circuit breaker prepayment device, in particular to a prepaid circuit breaker reclosing device and an implementation method. Background technique [0002] At present, the power system is fully developing smart grid construction, implementing intelligent control, intelligent management and intelligent analysis of the entire grid. The intelligent construction of distribution network has only just started, and it has not been fully popularized and applied due to various reasons. The research on intelligent control technology for distribution network power supply is also part of the popularization and application of intelligent distribution network construction, mainly for distribution transformers and load switches. Implement intelligent control and intelligent management. [0003] According to the intelligent demand of my country's power supply network, the State Grid Corporation of China requires the ...

AI Technical Summary

Problems solved by technology

Although the invention has achieved N-pole arc-free breaking, the invention still has the following three problems: (1) There is a time difference between opening and closing, and there is no synchronization; (2) The problem of arc extinguishing is not completely solved; (3) Tripping is using electromagnetic function; (4) N pole does not have overload and overcurrent protection function

Although the invention realizes the automatic reclosing function, the invention actually implements the reclosing function by adding an external control drive device, that is, adding another electrode on the basis of the 2P / 3P width to realize the reclosing function, and the circuit breaker width is increased 1 / 2 or 1 / 3, resulting in an increase in volume and cost, exceeding the requirements stipulated in the "Technical Specifications for External Load Switches for Electric Energy Meters", and cannot directly replace traditional ordinary miniature circuit breakers, and the universality is not strong

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